The Plant Vascular System: Evolution, Development and Functions
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摘要
The emergence of the tracheophyte-based vascular system of land plantshad major impacts on the evolution of terrestrial biology, in general,through its role in facilitating the development of plants with increasedstature, photosynthetic output, and ability to colonize a greatly expandedrange of environmental habitats. Recently, considerable progress hasbeen made in terms of our understanding of the developmental andphysiological programs involved in the formation and function of theplant vascular system. In this review, we first examine the evolutionaryevents that gave rise to the tracheophytes, followed by analysis of thegenetic and hormonal networks that cooperate to orchestrate vasculardevelopment in the gymnosperms and angiosperms. The two essentialfunctions performed by the vascular system, namely the delivery of resources (water, essential mineralnutrients, sugars and amino acids) to the various plant organs and provision of mechanical support arenext discussed. Here, we focus on critical questions relating to structural and physiological propertiescontrolling the delivery of material through the xylem and phloem. Recent discoveries into the role ofthe vascular system as an effective long-distance communication system are next assessed in termsof the coordination of developmental, physiological and defense-related processes, at the whole-plantlevel. A concerted effort has been made to integrate all these new findings into a comprehensive pictureof the state-of-the-art in the area of plant vascular biology. Finally, areas important for future researchare highlighted in terms of their likely contribution both to basic knowledge and applications to primaryindustry.
The emergence of the tracheophyte-based vascular system of land plants had major impacts on the evolution of terrestrial biology, in general, through its role in facilitating the development of plants with increased stature, photosynthetic output, and ability to colonize a greatly expanded range of environmental habitats. Recently, considerable progress has been made in terms of our understanding of the developmental and physiological programs involved in the formation and function of the plant vascular system. In this review, we first examine the evolutionary events that gave rise to the tracheophytes, followed by analysis of the genetic and hormonal networks that cooperate to orchestrate vascular development in the gymnosperms and angiosperms. The two essentialfunctions performed by the vascular system, namely the delivery of resources (water, essential mineral nutrients, sugars and amino acids) to the various plant organs and provision of mechanical support are next discussed. Here, we focus on critical questions relating to structural and physiological properties controlling the delivery of material through the xylem and phloem. Recent discoveries into the role of the vascular system as an effective long-distance communication system are next assessed in terms of the coordination of developmental, physiological and defense-related processes, at the whole-plant level. A concerted effort has been made to integrate all these new findings into a comprehensive picture of the state-of-the-art in the area of plant vascular biology. Finally, areas important for future research are highlighted in terms of their likely contribution both to basic knowledge and applications to primary industry.
The emergence of the tracheophyte-based vascular system of land plants had major impacts on the evolution of terrestrial biology, in general, through its role in facilitating the development of plants with increased stature, photosynthetic output, and ability to colonize a greatly expanded range of environmental habitats. Recently, considerable progress has been made in terms of our understanding of the developmental and physiological programs involved in the formation and function of the plant vascular system. In this review, we first examine the evolutionary events that gave rise to the tracheophytes, followed by analysis of the genetic and hormonal networks that cooperate to orchestrate vascular development in the gymnosperms and angiosperms. The two essentialfunctions performed by the vascular system, namely the delivery of resources (water, essential mineral nutrients, sugars and amino acids) to the various plant organs and provision of mechanical support are next discussed. Here, we focus on critical questions relating to structural and physiological properties controlling the delivery of material through the xylem and phloem. Recent discoveries into the role of the vascular system as an effective long-distance communication system are next assessed in terms of the coordination of developmental, physiological and defense-related processes, at the whole-plant level. A concerted effort has been made to integrate all these new findings into a comprehensive picture of the state-of-the-art in the area of plant vascular biology. Finally, areas important for future research are highlighted in terms of their likely contribution both to basic knowledge and applications to primary industry.
引文
Aarts N, Metz M, Holub E, Staskawicz BJ, Daniels MJ, Parker JE (1998) Different requirements for EDS1 and NDR1 by disease resistance genes de?ne at least two R genemediated signaling pathways in Arabidopsis. Proc. Natl. Acad. Sci. USA 95, 10306–10311.
Agrawal B, Lakshmanan V, Kaushik S, Bais HP (2012) Natural variation among Arabidopsis accessions reveals malic acid as a key mediator of Nickel (Ni) tolerance. Planta 236, 477– 489.
Aki T, Shigyo M, Nakano R, Yoneyama T, Yanagisawa S (2008) Nano scale proteomics revealed the presence of regulatory proteins including three FT-Like proteins in phloem and xylem saps from rice. Plant Cell Physiol. 49, 767–790.
Akiyama K, Matsuzaki K, Hayashi H (2005) Plant sesquiterpenes induce hyphal branching in arbuscular mycorrhizal fungi. Nature 435, 824–827.
Alakonya A, Kumar R, Koenig D, Kimura S, Townsley B, Runo S, Garces HM, Kang J, Yanez A, David-Schwartz R, Machuka J, Sinha N (2012) Interspeci?c RNA interference of SHOOT MERISTEMLESS-Like disrupts Cuscuta pentagona plant para- sitism. Plant Cell 4, 3153–3166.
Alder NN, Pockman WT, Sperry JS, Nuismer S (1997) Use of centrifugal force in the study of xylem cavitation. J. Exp. Bot. 48, 665–674.
Aloni R (1987) Differentiation of vascular tissues. Plant Physiol. 38, 179–204.
Aloni R, Schwalm K, Langhans M, Ullrich CI (2003) Gradual shifts in sites of free-auxin production during leaf-primordium development and their role in vascular differentiation and leaf morphogenesis in Arabidopsis. Planta 216, 841–853.
Alves S, Nabais C, Simoes Gonc?alves MDL, Correia dos Santos MM ? (2011) Nickel speciation in the xylem sap of the hyperaccumulator Alyssum serpyllifolium ssp. lusitanicum growing on serpentine soils of northeast Portugal. Plant Physiol. 168, 1715–1722.
Aly R, Cholakh H, Joel DM, Leibman D, Steinitz B, Zelcer A, Naglis A, Yarden O, Gal-On A (2009) Gene silencing of mannose 6- phosphate reductase in the parasitic weed Orobanche aegyptiaca through the production of homologous dsRNA sequences in the host plant. Plant Biotechnol. J. 7, 487–498.
Amiard V, Mueh K, Demming-Adams B, Ebbert V, Turgeon R (2005) Anatomical and photosynthetic acclimation to the light environment in species with differing mechanisms of phloem loading. Proc. Natl. Acad. Sci. USA 102, 12968–12973.
Anderegg WRL, Berry JA, Smith DD, Sperry JS, Anderegg LDL, Field CB (2012) The roles of hydraulic and carbon stress in a widespread climate-induced forest die-off. Proc. Am. Acad. Arts Sci. 109, 233–237.
Andres-Colas N, Sancenon V, Rodr′?guez-Navarro S, Mayo S, Thiele DJ, Ecker JR, Puig S, Penarrubia L (2006) The Arabidopsis ? heavy metal P-type ATPase HMA5 interacts with metallochaper-ones and functions in copper detoxi?cation of roots. Plant J. 45, 225–236.
Aoki K, Suzui N, Fujimaki S, Dohmae N, Yonekura-Sakakibara K, Fujiwara T, Hayashi H, Yamaya T, Sakakibara H (2005) Destination-selective long-distance movement of phloem proteins. Plant Cell 17, 1801–1814.
Aoyama T, Kobayashi T, Takahashi M, Nagasaka S, Usuda K, Kakei Y, Ishimaru Y, Nakanishi H, Mori S, Nishizawa NK (2009) OsYSL18 is a rice iron(III)-deoxymugineic acid transporter speci?- cally expressed in reproductive organs and phloem of lamina joints. Plant Mol. Biol. 70, 681–692.
Atkins CA, Smith PMC, Rodriguez-Medina C (2011) Macromolecules in phloem exudates – A review. Protoplasma 248, 165–172.
Avci U, Petzold HE, Ismail IO, Beers EP, Haigler CH (2008) Cysteine proteases XCP1 and XCP2 aid micro-autolysis within the intact central vacuole during xylogenesis in Arabidopsis roots. Plant J. 56, 303–315.
Bai SL, Kasai A, Yamada K, Li TZ, Harada T (2011) A mobile signal transported over a long distance induces systemic tran- scriptional gene silencing in a grafted partner. J. Exp. Bot. 62, 4561–4570.
Baima S, Nobili F, Sessa G, Lucchetti S, Ruberti I, Morelli G (1995) The expression of the athb-8 homeobox gene is restricted to provascular cells in Arabidopsis thaliana. Development 121, 4171– 4182.
Bahrun A, Jensen CR, Asch F, Mogensen VO (2002) Drought- induced changes in xylem pH, ionic composition, and ABA con- centration act as early signals in ?eld-grown maize (Zea mays L.). J. Exp. Bot. 53, 251–263.
Ball MC, Canny MJ, Huang CX, Egerton JJG, Wolfe J (2006) Freeze/thaw-induced embolism depends on nadir temperature: The heterogeneous hydration hypothesis. Plant Cell Environ. 29, 729– 745.
Banerjee AK, Chatterjee M, Yu YY, Suh SG, Miller WA, Hannapel DJ (2006) Dynamics of a mobile RNA of potato involved in a long- distance signaling pathway. Plant Cell 18, 3443–3457.
Barnes A, Bale J, Constantinidou C, Ashton P, Jones A, Pritchard J (2004) Determining protein identity from sieve element sap in Ricinus communis L. by quadrupole time of ?ight (Q-TOF) mass spectrometry. J. Exp. Bot. 55, 1473–1481.
Barnett JR (1982) Plasmodesmata and pit development in secondary xylem elements. Planta. 155, 251–260.
Batailler B, Lemaitre T, Vilaine F, Sanchez C, Renard D, Cayla T, Beneteau J, Dinant S (2012) Soluble and ?lamentous proteins in Arabidopsis sieve elements. Plant Cell Environ. 35, 1258–1273.
Bauby H, Divol F, Truernit E, Grandjean O, Palauqui JC (2007) Pro- tophloem differentiation in early Arabidopsis thaliana development. Plant Cell Physiol. 48, 97–109.
Baxter I, Muthukumar B, Hyeong CP, Buchner P, Lahner B, Danku J, Zhao K, Lee J, Hawkesford MJ, Guerinot ML, Salt DE (2008) Variation in molybdenum content across broadly distributed pop- ulations of Arabidopsis thaliana is controlled by a mitochondrial molybdenum transporter (MOT1). PLoS Genetics 4, e1000004.
Behmer ST, Grebenok RJ, Douglas AE (2011) Plant sterols and host plant suitability for a phloem-feeding insect. Funct. Ecol. 25, 484– 491.
Belimov AA, Dodd IC, Hontzeas N, Theobald JC, Safronova VI, Davies WJ (2009) Rhizosphere bacteria containing 1-aminocyclopropane-1-carboxylate deaminase increase yield of plants grown in drying soil via both local and systemic hormone signalling. New Phytol. 181, 413–423.
Belles JM, Garro R, Fayos J, Navarro P, Primo J, Conejero V (1999) ′ Gentisic acid as a pathogen-inducible signal, additional to salicylic acid for activation of plant defenses in tomato. Mol. Plant-Microbe Interact. 12, 227–235.
Benschop JJ, Mohammed S, O’Flaherty M, Heck AJR, Sli- jper M, Menke FLH (2007) Quantitative phosphoproteomics of early elicitor signaling in Arabidopsis. Molec. Cell. Proteomics 6, 1198–1214.
Benkova E, Michniewicz M, Sauer M, Teichmann T, Seifertova D, Jurgens G, Friml J (2003) Local, ef?ux-dependent auxin gradients as a common module for plant organ formation. Cell 115, 591–602.
Benning UF, Tamot B, Guelette BS, Hoffmann-Benning S (2012) New aspects of phloem-mediated long-distance lipid signaling in plants. Front. Plant Sci. 3, 53.
Berleth T, Mattsson J, Hardtke CS (2000) Vascular continuity and auxin signals. Trends Plant Sci. 5, 387–393.
Betsuyaku S, Takahashi F, Kinoshita A, Miwa H, Shinozaki K, Fukuda H, Sawa S (2011) Mitogen-activated protein kinase reg- ulated by the CLAVATA receptors contributes to shoot apicalmeristem homeostasis. Plant Cell Physiol. 52, 14–29.
Beveridge CA, Ross JJ, Murfet IC (1994) Branching mutant rms-2 in Pisum sativum (grafting studies and endogenous indole-3-acetic acid levels). Plant Physiol. 104, 953–959.
Bhattacharjee S, Halane MK, Kim SH, Gassmann W (2011) Pathogen effectors target Arabidopsis EDS1 and alter its interaction with immune regulators. Science 334, 1405–1408.
Bieleski RL (1973) Phosphate pools, phosphate transport, and phos- phate availability. Ann. Rev. Plant Physiol. 24, 225–252.
Bishopp A, Help H, El-Showk S, Weijers D, Scheres B, Friml J, Benkova′ E, Mahonen AP, Helariutta Y (2011a) A mutually ¨ ¨ inhibitory interaction between auxin and cytokinin speci?es vascular pattern in roots. Curr. Biol. 21, 917–926.
Bishopp A, Lehesranta S, Vaten A, Help H, El-Showk S, Scheres B, ′ Helariutta K, Mahonen AP, Sakakibara H, Helariutta Y (2011b) ¨ ¨ Phloem-transported cytokinin regulates polar auxin transport and maintains vascular pattern in the root meristem. Curr. Biol. 21, 927– 932.
Blindauer CA, Schmid R (2010) Cytosolic metal handling in plants: Determinants for zinc speci?city in metal transporters and metal- lothioneins. Metallomics 2, 510–529.
Bolanos L, Lukaszewski K, Bonilla I, Blevins D (2004) Why boron? ? Plant Physiol. Biochem. 42, 907–912.
Bollhoner B, Prestele J, Tuominen H (2012) Xylem cell death: Emerging understanding of regulation and function. J. Exp. Bot. 63, 1081–1094.
Bonke M, Thitamadee S, Mahonen AP, Hauser MT, Helariutta Y ¨ ¨ (2003) APL regulates vascular tissue identity in Arabidopsis. Nature 426, 181–186.
Boot KJM, Libbenga KR, Hille SC, Offringa R, van Duijn B (2012) Polar auxin transport: An early invention. J. Exp. Bot. 63, 4213– 4218.
Bostwick DE, Dannenhoffer JM, Skaggs MI, Lister RM, Larkins BA, Thompson GA (1992) Pumpkin phloem lectin genes are speci?cally expressed in companion cells. Plant Cell 4, 1539–1548.
Bowman JL, Floyd SK (2008) Patterning and polarity in seed plant shoots. Annu. Rev. Plant Biol. 59, 67–88.
Boyce KC, Brodribb TJ, Feild TS, Zwieniecki MA (2009) Angiosperm leaf vein evolution was physiologically and environmentally trans- formative. Proc. R. Soc. Series B 276, 1771–1776.
Boyce KC, Zwieniecki MA (2012) Leaf fossil record suggests limited in?uence of atmospheric CO2 on terrestrial productivity prior to angiosperm evolution. Proc. Natl. Acad. Sci. USA 109, 10403– 10408.
Brady SM, Orlando DA, Lee JY, Wang JY, Koch J, Dinneny JR, Mace D, Ohler U, Benfey PN (2007) A high-resolution root spatiotemporal map reveals dominant expression patterns. Science 318, 801–806.
Brady SM, Zhang L, Megraw M, Martinez NJ, Jiang E, Yi CS, Liu W, Zeng A, Taylor-Teeples M, Kim D, Ahnert S, Ohler U, Ware D, Walhout AJ, Benfey PN (2011) A stele-enriched gene regulatory network in the Arabidopsis root. Mol. Syst. Biol. 7, 459.
Brewer PB, Dun EA, Ferguson BJ, Rameau C, Beveridge CA (2009) Strigolactone acts downstream of auxin to regulate bud outgrowth in pea and Arabidopsis. Plant Physiol. 150, 482–493.
Brewer PB, Koltai H, Beveridge CA (2013) Diverse roles of strigolac- tones in plant development. Mol. Plant 6, 18–28.
Briggs LJ (1950) Limiting negative pressure of water. J. Appl. Phys. 21, 721–722.
Brodersen C, McElrone AJ, Choat B, Matthews MA, Shackel KA (2010) The dynamics of embolism repair in xylem: in vivo visual- izations using high-resolution computed tomography. Plant Physiol. 154, 1088–1095.
Brodersen P, Voinnet O (2006) The diversity of RNA silencing path- ways in plants. Trends Genet. 22, 268–280.
Brodribb TJ (2009) Xylem hydraulic physiology: The functional back- bone of terrestrial plant productivity. Plant Sci. 177, 245–251.
Brodribb TJ, Holbrook NM (2005) Water stress deforms tracheids peripheral peripheral to the leaf vein of a tropical conifer. Plant Physiol. 137, 1139–1146.
Brodribb TJ, McAdam SAM (2011) Passive origins of stomatal control in vascular plants. Science 331, 582–585.
Brown PH, Hu H (1996) Phloem mobility of boron is species dependent: Evidence for phloem mobility in sorbitol-rich species. Ann. Bot. 77, 497–505.
Bucci SJ, Scholz FG, Goldstein G, Meinzer FC, Sternberg LDSL (2003) Dynamic changes in hydraulic conductivity in petioles of two savanna species: Factors and mechanisms contributing to the re?lling of embolized vessels. Plant Cell Environ. 26, 1633–1645.
Buhtz A, Pieritz J, Springer F, Kehr J (2010) Phloem small RNAs,) nutrient stress responses, and systemic mobility. BMC Plant Biol. 10, 64.
Buhtz A, Springer F, Chappell L, Baulcombe DC, Kehr J (2008) Identi?cation and characterization of small RNAs from the phloem of Brassica napus. Plant J. 53, 739–749.
Burleigh SH, Harrison MJ (1999) The down-regulation of Mt4-like genes by phosphate fertilization occurs systemically and involves phosphate translocation to the shoots. Plant Physiol. 119, 241–248.
Butenko MA, Vie AK, Brembu T, Aalen RB, Bones AM (2009) Plant peptides in signalling: Looking for new partners. Trends Plant Sci. 14, 255–263.
Butter?eld BG (1995) Vessel element differentiation. In: Iqbal M, ed. The Cambial Derivatives. Encyclopedia of Plant Anatomy. Gebruder Borntraeger, Berlin. pp. 93–106.
Cakmak I, Kirkby EA (2008) Role of magnesium in carbon partitioning and alleviating photo-oxidative damage. Physiol. Plant 133, 692– 704.
Canny MJ (1975) Mass Transfer. In: MH Zimermann, JA Milburn, eds. Transport in Plants I. Phloem Transport. Springer-Verlag, Berlin.S, pp. 139–153.
Canny MJ (1998) Transporting water in plants. Amer. Sci. 86, 152–159.
Cano-Delgado A, Lee JY, Demura T (2010) Regulatory mechanisms for speci?cation and patterning of plant vascular tissues. Annu. Rev.Cell Dev. Biol. 26, 605–637.
Cao H, Bowling SA, Gordon S, Dong X (1994) Characterization of an Arabidopsis mutant that is nonresponsive to inducers of systemic acquired resistance. Plant Cell 6, 1583–1592.
Cao H, Glazebrook J, Clark JD, Volko S, Dong X (1997) The Arabidopsis NPR1 gene that controls systemic acquired resis- tance encodes a novel protein containing ankyrin repeats. Cell 88, 57–64.
Caplan J, Padmanabhan M, Dinesh-Kumar SP (2008) Plant NB-LRR immune receptors: From recognition to transcriptional reprogram- ming. Cell Host Microbe 3, 126–135.
Carlquist S (1984) Vessel grouping in dicotyledon wood: Signi?cance and relationship to imperforate tracheary elements. Aliso 10, 505– 525. C
Carlsbecker A, Lee JY, Roberts CJ, Dettmer J, Lehesranta S, Zhou J, Lindgren O, Moreno-Risueno MA, Vat′en A, Thitamadee S, Campilho A, Sebastian J, Bowman JL, Helariutta Y, Benfey PN (2010) Cell signalling by microRNA165/6 directs gene dose-dependent root cell fate. Nature 465, 316–321.
Carr JP, Dixon DC, Nikolau BJ, Voelkerding KV, Klessig DF (1987) Synthesis and localization of pathogenesis-related proteins in to- bacco. Mol. Cell Biol. 7, 1580–1583.
Catford JG, Staehelin C, Lerat S, Pich′e Y, Vierheilig H (2003) Suppression of arbuscular mycorrhizal colonization and nodulation in split-root systems of alfalfa after pre-inoculation and treatment with Nod factors. J. Exp. Bot. 54, 1481–1487.
Century KS, Holub EB, Staskawicz BJ (1995) NDR1, a locus of Arabidopsis thaliana that is required for disease resistance to both a bacterial and a fungal pathogen. Proc. Natl. Acad. Sci. USA 92, 6597–6601.
Century KS, Shapiro AD, Repetti PP, Dahlbeck D, Holub E, Staskawicz BJ (1997) NDR1, a pathogen-induced component required for Arabidopsis disease resistance. Science 278, 1963– 1965.
Thilmony R, He SY, Fobert P, Dengler N, Cameron RK (2011)Localization of DIR1 at the tissue, cellular and subcellular levelsduring systemic acquired resistance in Arabidopsis using DIR1:GUSand DIR1:EGFP reporters. BMC Plant Biol. 11, 125.
Chanda B, Venugopal SC, Kulshrestha S, Navarre D, Downie B, Vaillancourt L, Kachroo A, Kachroo P (2008) Glycerol-3- phosphate levels are associated with basal resistance to the hemibiotrophic fungus Colletotrichum higginsianum in Arabidopsis. Plant Physiol. 147, 2017–2029.
Chanda B, Ye X, Mandal M, Yu K, Sekine KT, Gao QM, Selote D, Hu Y, Stromberg A, Navarre D, Kachroo A, Kachroo P (2011) Glycerol-3-phosphate is a critical mobile inducer of systemic immunity in plants. Nat. Genet. 43, 421–427.
Chandra-Shekara AC, Navarre D, Kachroo A, Kang HG, Klessig D, Kachroo P (2004) Signaling requirement and role of salicylic acid in HRT- and rrt-mediated resistance to turnip crinkle virus in Arabidopsis. Plant J. 40, 647–659.
Chandra-Shekara AC, Venugopal SC, Kachroo A, Kachroo P (2007) Plastidal fatty acid levels regulate resistance gene-dependent de- fense signaling in Arabidopsis. Proc. Natl. Acad. Sci. USA 104, 7277–7282.
Chaturvedi R, Krothapalli K, Makandar R, Nandi A, Sparks A, Roth M, Welti R, Shah J (2008) Plastid omega3-fatty acid desaturase- dependent accumulation of a systemic acquired resistance inducing activity in petiole exudates of Arabidopsis thaliana is independent of jasmonic acid. Plant J. 54, 106–117.
Chaturvedi R, Venables B, Petros R, Nalam V, Li M, Wang X, Takemoto LJ, Shah J (2012) An abietane diterpenoid is a potent activator of systemic acquired resistance. Plant J. 71, 161–172.
Chen F, D’Auria JC, Tholl D, Ross JR, Gershenzon J, Noel JP, Pich- ersky E (2003) An Arabidopsis thaliana gene for methylsalicylate biosynthesis, identi?ed by a biochemical genomics approach, has a role in defense. Plant J. 36, 577–588.
Chen HM, Pang Y, Zeng J, Ding Q, Yin SY, Liu C, Lu MZ, Cui KM, He XQ (2012a) The Ca2 -dependent DNases are involved in secondary + xylem development in Eucommia ulmoides. J. Integr. Plant Biol. 54, 456–470.
Chen LQ, Qu XQ, Hou BH, Sosso D, Osorio S, Fernie AR, Frommer WB (2012b) Sucrose ef?ux mediated by SWEET proteins as a key step for phloem transport. Science 335, 207–211.
Chen Z, Silva H, Klessig DF (1993) Involvement of reactive oxygen species in the induction of systemic acquired resistance by salicylic acid in plants. Science 242, 883–886.
Chern MS, Fitzgerald HA, Yadav RC, Canlas PE, Dong X, Ronald PC (2001) Evidence for a disease-resistance pathway in rice similar to the NPR1-mediated signaling pathway in Arabidopsis. Plant J. 27, 101–113.
Chincinska IA, Liesche J, Kr¨ugel U, Michalska J, Geigenberger P, Grimm B, K¨uhn C (2008) Sucrose transporter StSUT4 from potato affects ?owering, tuberization, and shade avoidance response. Plant Physiol. 146, 515–528.
Chiou TJ, Lin SI (2011) Signaling network in sensing phosphate availability in plants. Annu. Rev. Plant Biol. 62, 185–206.
Choat B, Cobb AR, Jansen S (2008) Structure and function of bor- dered pits: New discoveries and impacts on whole-plant hydraulic function. New Phytol. 177, 608–626.
Choat B, Drayton WM, Brodersen C, Matthews MA, Schackel KA, Wada H, McElrone AJ (2010) Measurement of vulnerability to water stress-induced cavitation in grapevine: A comparison of four techniques applied to a long-vesseled species. Plant Cell Environ. 33, 1502–1512.
Choat B, Gambetta GA, Shakel KA, Matthews MA (2009) Vascular function in grape berries across development and its relevance to apparent hydraulic isolation. Plant Physiol. 151, 1677–1687.
Choat B, Jansen S, Zwieniecki MA, Smets E, Holbrook NM (2004) Changes in pit membrane porosity due to de?ection and stretching: The role of vestured pits. J. Exp. Bot. 55, 1569–1575.
Choat B, Medek DE, Stuart SA, Pasquet-Kok J, Egerton JJG, Salari H, Sack L, Ball MC (2011) Xylem traits mediate a trade-off between resistance to freeze-thaw-induced embolism and photo- synthetic capacity in overwintering evergreens. New Phytol. 191, 996–1005.
Christman MA, Sperry JS, Adler FR (2009) Testing the rare pit hypothesis in three species of Acer. New Phytol. 182, 664–674.
Christman MA, Sperry JS (2010) Single vessel ?ow measurements indicate scalariform perforation plates confer higher resistance to ?ow than previously estimated. Plant Cell Environ. 33, 431–443.
Christman MA, Sperry JS, Smith DD (2012) Rare pits, large vessels, and extreme vulnerability to cavitation in a ring-porous tree species. New Phytol. 193, 713–720.
Christmann A, Weiler EW, Steudle E, Grill E (2007) A hydraulic signal in root-to-shoot signalling of water shortage. Plant J. 52, 167–174.
Clay NK, Nelson T (2005) Arabidopsis thickvein mutation affects vein thickness and organ vascularization, and resides in a provascular cell-speci?c spermine synthase involved in vein de?nition and in polar auxin transport. Plant Physiol. 138, 767–777.
Cochard H, Cruiziat P, Tyree MT (1992) Use of positive pressures to establish vulnerability curves: Further support for the air-seeding hypothesis and implications for pressure-volume analysis. Plant Physiol. 100, 205–209.
Cochard H, Froux F, Mayr S, Coutand C (2004) Xylem wall collapse in water-stressed pine needles. Plant Physiol. 134, 401–408.
Cochard H, Gaelle D, Bodet C, Tharwat I, Poirier M, Ameglio T (2005) Evaluation of a new centrifuge technique for rapid generation of xylem vulnerability curves. Physiol. Plant. 124, 410–418.
Cochard H, Herbette S, Barigah T, Vilagrosa A (2010a) Does sample length in?uence the shape of vulnerability to cavitation curves? A test with the Cavitron spinning technique. Plant Cell Environ. 33, 1543–1552.
Cochard H, Herbette S, Hernandez E, Holtta T, Mencuccini M (2010b) The effects of sap ionic composition on xylem vulnerability to cavitation. J. Exp. Bot. 61, 275–285.
Cochard H, Holtta T, Herbette S, Delzon S, Mencuccini M (2009) New insights into the mechanisms of water-stress-induced cavita- tion in conifers. Plant Physiol. 151, 949–954.
Colombani A, Djerbi S, Bessueille L, Blomqvist K, Ohlsson A, Berglund T, Teeri TT, Bulone V (2004) In vitro synthesis of (1 → 3)-β-D-glucan (callose) and cellulose by detergent extracts of membranes from cell suspension cultures of hybrid aspen. Cellulose 11, 313–327.
Conte SS, Walker EL (2011) Transporters contributing to iron traf?ck- ing in plants. Mol. Plant 4, 464–476.
Coppinger P, Pepetti PP, Day B, Dahlbeck D, Mehlert A, Staskaw- icz BJ (2004) Overexpression of the plasma membrane-localized NDR1 protein results in enhanced bacterial resistance in Arabidop- sis thaliana. Plant J. 40, 225–237.
Corbesier L, Vincent C, Jang SH, Fornara F, Fan QZ, Searle I, Giakountis A, Farrona S, Gissot L, Turnbull C, Coupland G (2007) FT protein movement contributes to long-distance signaling in ?oral induction of Arabidopsis. Science 316, 1030–1033.
Courtois-Moreau CL, Pesquet E, Sjodin A, Muniz L, Bollhoner B, Kaneda M, Samuels L, Jansson S, Tuominen H (2009) A unique program for cell death in xylem ?bers of Populus stem. Plant J. 58, 260–274.
Cox RM, Malcolm JM (1997) Effects of duration of a simulated winter thaw on dieback and xylem conductivity of Betula papyrifera. Tree Physiol. 17, 389–396.
Crombie DS, Hipkins MF, Milburn JA (1985) Gas penetration of pit membranes in the xylem of Rhododendron as the cause of acoustically detectable sap cavitation. Aust. J. Plant Physiol. 12, 445–454.
Cronshaw J (1981) Phloem structure and function. Annu Rev. Plant Physiol. Plant Mol. Biol. 32, 465–484.
Cui H, Hao YM, Stolc V, Deng XW, Sakakibara H, Kojima M (2011) Genome-wide direct target analysis reveals a role for SHORT- ROOT in root vascular patterning through cytokinin homeostasis. Plant Physiol. 157, 1221–1231.
Cui H, Levesque MP, Vernoux T, Jung JW, Paquette AJ, Gal- lagher KL, Wang JY, Blilou I, Scheres B, Benfey PN (2007) An evolutionarily conserved mechanism delimiting SHR movement de?nes a single layer of endodermis in plants. Science 316, 421–425.
Cui KM, He XQ (2012) The Ca2 -dependent DNases are involved in + secondary xylem development in Eucommia ulmoides. J. Integr. Plant Biol. 54, 456–470.
Curie C, Cassin G, Couch D, Divol F, Higuchi K, Le Jean M, Misson J, Schikora A, Czernic P, Mari S (2009) Metal movement within the plant: Contribution of nicotianamine and yellow stripe 1-like transporters. Ann. Bot. 103, 1–11.
Dangl JL, Dietrich RA, Richberg MH (1996) Death don’t have no mercy: Cell death programs in plant-microbe interactions. Plant Cell 8, 1793–1807.
David-Schwartz R, Runo S, Townsley B, Machuka J, Sinha N (2008) Long-distance transport of mRNA via parenchyma cells and phloem across the host-parasite junction in Cuscuta. New Phytol. 179, 1133–1141.
Davidson A, Keller F, Turgeon R (2011) Phloem loading, plant growth form, climate. Protoplasma 248, 153–163.
Davis SD, Sperry JS, Hacke UG (1999) The relationship between xylem conduit diameter and cavitation caused by freeze-thaw events. Am. J. Bot. 86, 1367–1372.
Davis WJ, Zhang J (1991) Root signals and the regulation of growth and development of plants in drying soil. Annu. Rev. Plant Physiol. Mol. Biol. 42, 55–76.
Dean JV, Delaney SP (2008) Metabolism of salicylic acid in wild-type, ugt74f1 and ugt74f2 glucosyltransferase mutants of Arabidopsis thaliana. Physiol. Plant. 132, 417–425.
Deeken R, Ache P, Kajahan I, Klinkenberg J, Bringmann G, Hedrich R (2008) Identi?cation of Arabidopsis thaliana phloem RNAs provides a search criterion for phloem-based transcripts hidden in complex datasets of microarray experiments. Plant J. 55, 746–759.
Deeken R, Geiger D, Fromm J, Koroleva O, Ache P, Langenfeld- Heyser R, Sauer N, May ST, Hedrich R (2002) Loss of AKT2/3 potassium channel affects sugar loading into the phloem of Ara- bidopsis. Planta 216, 334–344.
Delaney TP, Friedrich L, Ryals JA (1995) Arabidopsis signal transduc- tion mutant defective in chemically and biologically induced diseaseresistance. Proc. Natl. Acad. Sci. USA 92, 6602–6606.
Demari-Weissler H, Rachamilavech S, Aloni R, German MA, Cohen S, Zwieniecki MA, Holbrook NM, Granot D (2009) LeFRK2 is required for phloem and xylem differentiation and the transport of both sugar and water. Planta 230, 795–805.
Demura T, Tashiro G, Horiguchi G, Kishimoto N, Kubo M, Matsuoka N, Minami A, Nagata-Hiwatashi M, Nakamura K, Okamura Y, Sassa N, Suzuki S, Yazaki J, Kikuchi S, Fukuda H (2002) Visu- alization by comprehensive microarray analysis of gene expression programs during transdifferentiation of mesophyll cells into xylem cells. Proc. Natl. Acad. Sci. USA 99, 15794–15799.
Demura T, Fukuda H (2007) Transcriptional regulation in wood forma- tion. Trends Plant Sci. 12, 64–70.
Dengler N, Kang J (2001) Vascular patterning and leaf shape. Curr. Opin. Plant Biol. 4, 50–56.
De Smet I, Tetsumura T, De Rybel B, Frey NF, Laplaze L, Casimiro I, Swarup R, Naudts M, Vanneste S, Audenaert D, Inze D, Bennett MJ, Beeckman T (2007) Auxin-dependent regulation of lateral root positioning in the basal meristem of Arabidopsis. Development 134, 681–690.
Despr′es C, DeLong C, Glaze S, Liu E, Fobert PR (2000) The Arabidopsis NPR1/NIM1 protein enhances the DNA binding activity of a subgroup of the TGA family of bZIP transcription factors. Plant Cell 12, 279–290.
Despr′es C, Chubak C, Rochon A, Clark R, Bethune T, Desveaux D, Fobert PR (2003) The Arabidopsis NPR1 disease resistance protein is a novel cofactor that confers redox regulation of DNA binding activity to the basic domain/leucine zipper transcription factor TGA1. Plant Cell 15, 2181–2191.
Dhawan W, Luo H, Foerster AM, AbuQamar S, Du HN, Briggs SC, Scheid OM, Mengiste T (2009) HISTONE MONOUBIQUITINA- TION1 interacts with a subunit of the mediator complex and regu- lates defense against necrotrophic fungal pathogens in Arabidopsis. Plant Cell 21, 1000–1019.
Dhondt S, Coppens F, De Winter F, Swarup K, Merks RMH, Inze D, Bennett MJ, Beemster GTS (2010) SHORT-ROOT and SCARECROW regulate leaf growth in Arabidopsis by stimulating S-phase progression of the cell cycle. Plant Physiol. 154, 1183– 1195.
DiDonato R, Roberts L, Sanderson T, Eisley R, Walker E (2004) Arabidopsis yellow stripe-like2 (YSL2): A metal-regulated gene encoding a plasma membrane transporter of nicotianamine-metal complexes. Plant J. 39, 403–414.
Di′evart A, Clark SE (2004) LRR-containing receptors regulating plant development and defense. Development 131, 251–261.
Dinant S, Lucas WJ (2012) Sieve elements: Puzzling activ- ities deciphered by proteomics studies. In: GA Thompson, AJE van Bel, eds. Phloem: Molecular Cell Biology, Systemic Communication, Biotic Interactions. Wiley-Blackwell, Ames. pp. 157–185.
Doering-Saad C, Newbury HJ, Couldridge CE, Bale JS, Pritchard J (2006) A phloem-enriched cDNA library from Ricinus: Insights into phloem function. J. Exp. Bot. 57, 3183–3193.
Dolan L, Janmaat K, Willemsen V, Linstead P, Poethig S, Roberts K, Scheres B (1993) Cellular organisation of the Arabidopsis thaliana root. Development 119, 71–84.
Domagalska MA, Leyser O (2011) Signal integration in the control of shoot branching. Nat. Rev. Mol. Cell Biol. 12, 211–221.
Domec JC, Lachenbruch B, Meinzer FC (2006) Bordered pit structure and function determine spatial patterns of air-seeding thresholds in xylem of douglas-?r (Psuedotsuga menziesii; Pinaceae) trees. Am. J. Bot. 93, 1588–1600.
Domec JC, Warren JM, Meinzer FC, Lachenbruch B (2009) Safety factors for xylem failure by implosion and air-seeding with roots, trunks, and branches of young and old conifer trees. IAWA J. 30, 100–120.
Donner TJ, Sherr I, Scarpella E (2009) Regulation of preprocambial cell state acquisition by auxin signaling in Arabidopsis leaves. Development 136, 3235–3246.
Du J, Groover A (2010) Transcriptional regulation of secondary growth and wood formation. J. Integr. Plant Biol 52, 17–27.
Du S, Yamamoto F (2007) An overview of the biology of reaction wood formation. J. Integr. Plant Biol. 49, 131–143.
Duckett JG, Pressel S, P’ng KMY, Renzaglia, KS (2009) Exploding a myth: The capsule dehiscence mechanism and the function of pseudostomata in Sphagnum. New Phytol. 183, 1053–1063.
Dunoyer P, Brosnan CA, Schott G, Wang Y, Jay F, Alioua A, Himber C, Voinnet O (2010) An endogenous, systemic RNAi pathway in plants. EMBO J. 29, 1699–1712.
Durner J, Klessig DF (1995) Inhibition of ascorbate peroxidase by salicylic acid and 2.6-dichloroisonicdinic acid, two inducers of plant defense responses. Proc. Natl. Acad. Sci. USA 92, 11312–11316.
Durrant WE, Wang S, Dong X (2007) Arabidopsis SNI1 and RAD51D regulate both gene transcription and DNA recombination during the defense response. Proc. Natl. Acad. Sci. USA 104, 4223–4227.
Durrant W, Dong X (2004) Systemic acquired resistance. Annu. Rev. Phytopathol. 42, 185–209.
Durrett TP, Gassmann W, Rogers EE (2007) The FRD3-Mediated ef?ux of citrate into the root vasculature is necessary for ef?cient iron translocation. Plant Physiol. 144, 197–205.
Edwards D, Davies KL, AXE L (1992) A vascular conducting strand in the early plant Cooksonia. Nature 357, 683–685.
Edwards R (1994) Conjugation and metabolism of salicylic acid in tobacco. J. Plant Physiol. 143, 609–614.
Effmert U, Saschenbrecker S, Ross J, Negre F, Fraser CM, Noel JP, Dudareva N, Piechulla B (2005) Floral benzenoid carboxyl methyl- transferases: From in vitro to in planta function. Phytochemistry 66, 1211–1230.
Ejeta G (2007) Breeding for Striga resistance in sorghum: Exploitation of an intricate host-parasite biology. Crop Sci. 47, S216–S227.
Emery JF, Floyd SK, Alvarez J, Eshed Y, Hawker NP, Izhaki A, Baum SF, Bowman JL (2003) Radial patterning of Arabidopsisshoots by Class III HD-ZIP and KANADI genes. Curr. Biol. 13, 1768–1774.
Endo S, Demura T, Fukuda H (2001) Inhibition of proteasome activity by the TED4 protein in extracellular space: A novel mechanism for protection of living cells from injury caused by dying cells. Plant Cell Physiol. 42, 9–19.
Enyedi AJ, Yalpani N, Silverman P, Raskin I (1992) Localization, conjugation, and function of salicylic acid in tobacco during the hypersensitive reaction to tobacco mosaic virus. Proc. Natl. Acad. Sci. USA 89, 2480–2484.
Eom JS, Cho JI, Reinder A, Lee SW, Yoo Y, Tuan PQ, Choi SB, Bang G, Park YI, Cho MH, Bhoo SH, An G, Hahn TR, Ward JM, Jeon JS (2011) Impaired function of the tonoplast-localized sucrose transporter in rice (Oryza sativa), OsSUT2, limits the transport of vacuolar reserve sucrose and affects plant growth. Plant Physiol. 157, 109–119.
Esau K (1965a) Plant Anatomy. John Wiley & Sons, Inc., New York.
Esau K (1965b) Vascular Differentiation in Plants. Holt, Rinehart and Winston, New York.
Esau K (1969) The Phloem. Encyclopedia of Plant Anatomy. Born- taeger, Berlin.
Esau K, Cheadle VI, Gifford EM (1953) Comparative structure and possible trends of specialization of the phloem. Am. J. Bot. 40, 9– 19.
Eshed Y, Baum SF, Perea JV, Bowman JL (2001) Establishment of polarity in lateral organs of plants. Curr. Biol. 11, 1251–1260.
Etchells JP, Provost CM, Turner SR (2012) Plant vascular cell division is maintained by an interaction between PXY and ethylene signalling. PLoS Genet. 8, e1002997.
Etchells JP, Turner SR (2010) The pxy-cle41 receptor ligand pair de- ?nes a multifunctional pathway that controls the rate and orientation of vascular cell division. Development 137, 767–774.
Evert RF (2006) Esau’s Plant Anatomy: Meristems, Cells, and Tissues of the Plant Body: Their Structure, Function, and Development. John Wiley & Sons, Hoboken, NJ.
Evert RF, Warmbrodt RD, Eichhorn SE (1989) Sieve-pore development in some leptosporangiate ferns. Am. J. Bot. 76, 1404–1413.
Fan RC, Peng CC, Xu YH, Wang XF, Li Y, Shang Y, Du SY, Zhao R, Zhang XY, Zhang LY, Zhang DP (2009) Apple sucrose transporter SUT1 and sorbitol transporter SOT6 interact with cytochrome b5 to regulate their af?nity for substrate sugars. Plant Physiol. 150, 1880–1901.
Fan W, Dong X (2002) In vivo interaction between NPR1 and transcrip- tion factor TGA2 leads to salicylic acid-mediated gene activation in Arabidopsis. Plant Cell 14, 1377–1389.
FAO (2008) Forest and energy. Food and Agriculture Organization of the United Nations. FAO Forestry Paper 154.
FAO (2009) State of the world’s forests. FAO Report, Food and Agriculture Organization of the United Nations. ISBN 978-92-5- 106057-5.
Farrar JF, Jones DL (2000) The control of carbon acquisition by roots. New Phytol. 147, 43–53.
Feys BJ, Moisan LJ, Newman MA, Parker JE (2001) Direct interaction between the Arabidopsis disease resistance signaling proteins, EDS1 and PAD4. EMBO J. 20, 5400–5411.
Feys BJ, Wiermer M, Bhat RA, Moisan LJ, Medina-Escobar N, Neu C, Cabral A, Parker JE (2005) Arabidopsis SENESCENCE- ASSOCIATED GENE101 stablizes and signals within an EN- HANCED DISEASE SUSCEPTIBILITY1 complex in plant innate immunity. Plant Cell 17, 2601–2613.
Fiers M, Ku KL, Liu CM (2007) CLE peptide ligands and their roles in establishing meristems. Curr. Opin. Plant Biol. 10, 39–43.
Fisher DB (2000) Long-Distance Transport. In: B Buchanan, W Gris- sem, R Jones, eds. Biochemistry & Molecular Biology of Plants. American Soc. of Plant Biologists, Maryland, pp. 730–785.
Fisher DB, Cash-Clarke CE (2000a) Sieve tube unloading, post- phloem transport of ?uorescent tracers, proteins injected into sieve tubes severed aphid stylets. Plant Physiol. 123, 125–137.
Fisher DB, Cash-Clarke CE (2000b) Gradients in water potential, turgor pressure along the translocation pathway during grain ?lling in normally watered, water-stressed wheat plants. Plant Physiol. 123, 139–147.
Fisher DB, Wang N (1995) Sucrose concentration gradients along the post-phloem transport pathway in the maternal tissue of developing wheat grains. Plant Physiol. 109, 587–592.
Fisher DB, Wu K, Ku MSB (1992) Turnover of soluble proteins in the wheat sieve tube. Plant Physiol. 100, 1433–1441.
Fisher K, Turner S (2007) Pxy, a receptor-like kinase essential for maintaining polarity during plant vascular-tissue development. Curr. Biol. 17, 1061–1066.
Floyd SK, Bowman JL (2004) Gene regulation: Ancient microrna target sequences in plants. Nature 428, 485–486.
Floyd SK, Zalewski CS, Bowman JL (2006) Evolution of class iii homeodomain-leucine zipper genes in streptophytes. Genetics 173, 373–388.
Franco-Zorrilla JM, Mart′?n AC, Leyva A, Paz-Ares J (2005) Interac- tion between phosphate-starvation, sugar, and cytokinin signaling in Arabidopsis and the roles of cytokinin receptors CRE1/AHK4 and AHK3. Plant Physiol. 38, 847–57.
Franco-Zorrilla JM, Martin AC, Solano R, Rubio V, Leyva A, Paz- Ares J (2002) Mutations at CRE1 impair cytokinin-induced repres- sion of phosphate starvation responses in Arabidopsis. Plant J. 32, 353–360.
Franks P, Brodribb T (2005) Stomatal control and water transport in stems. In: Holbrook NM, Zwieniecki MA, eds. Vascular Transport in Plants. Elsevier, Amsterdam. pp. 69–89.
Fraysse LC, Wells B, McCann MC, Kjellbom P (2005) Speci?c plasma membrane aquaporins of the PIP1 subfamily are expressed in sieve elements and guard cells. Biol. Cell 97, 519–534.
Friedrich L, Vernooij E, Gaffney T, Morse A, Ryals J (1995) Characterization of tobacco plants expressing a bacterial salicylate hydroxylase gene. Plant Mol. Biol. 29, 959–968.
Froelich DR, Mullendore DL, Jensen KH, Ross-Elliot TJ, Anstead JA, Thompson GA, P′elissier HC, Knoblauch M (2011) Phloemultrastructure and pressure ?ow: Sieve-element-occlusion-relatedagglomerations do not affect translocation. Plant Cell 23, 4428–4445.
Fu ZQ, Yan S, Saleh A, Wang W, Ruble J, Oka N, Mohan R, Spoel SH, Tada Y, Zheng Y, Dong X (2012) NPR3 and NPR4 are receptors for the immune signal salicylic acid in plants. Nature 16, 228–232.
Fukuda H (2000) Programmed cell death of tracheary elements as a paradigm in plants. Plant Mol. Biol. 44, 245–253.
Fukuda H (2004) Signals that control plant vascular cell differentiation. Nat. Rev. Mol. Cell Biol. 5, 379–391.
Fukuda H, Hirakawa Y, Sawa S (2007) Peptide signaling in vascular development. Curr. Opin. Plant Biol. 10, 477–482.
Funk V, Kositsup B, Zhao C, Beers EP (2002) The Arabidopsis xylem peptidase XCP1 is a tracheary element vacuolar protein that may be a papain ortholog. Plant Physiol. 128, 84–94.
Gabaldon C, Ros LVG, Pedreno MA, Barcelo AR (2005) Nitric oxide production by the differentiating xylem of Zinnia elegans. New Phytol. 165, 121–130.
Gaffney T, Friedrich L, Vernooij B, Negmtto D, Nye G, Uknes S, Ward E, Kessmann H, Ryals J (1993) Requirement of salicylic acid for the induction of systemic acquired resistance. Science 261,754–756.
Gallagher KL, Benfey PN (2009) Both the conserved GRAS domain and nuclear localization are required for SHORT-ROOT movement. Plant J. 57, 785–797.
Garc′?a AV, Blanvillain-Baufum′e S, Huibers RP, Wiermer M, Li G, Gobbato E, Rietz S, Parker JE (2010) Balanced nuclear and cytoplasmic activities of EDS1 are required for a complete plant innate immune response. PLoS Pathogens 6, e1000970
Garcia-Mas J, Benjak A, Sanseverino W, Bourgeois M, Mir G, Gonz′alez VM, H′enaff E, C?amara F, Cozzuto L, Lowy E, Alioto T, Capella-Guti′errez S, Blanca J, Ca?nizares J, Ziarsolo P, Gonzalez-Ibeas D, Rodr′?guez-Moreno L, Droege M, Du L, G Alvarez-Tejado M, Lorente-Galdos B, Mel′e M, Yang L, Weng YQ, Navarro A, Marques-Bonet T, Aranda MA, Nuez F, Pic′o B, Gabald′on T, Roma G, Guig′o R, Casacuberta JM, Ar′us P, G Puigdom`enech P (2012) The genome of melon (Cucumis melo L.) Proc. Natl. Acad. Sci. USA 109, 11872–11877.
Gardiner J, Donner TJ, Scarpella E (2011) Simultaneous activation of SHR and ATHB8 expression de?nes switch to preprocambial cell state in Arabidopsis leaf development. Dev. Dynam. 240, 261–270.
Gaupels F, Buhtz A, Knauer T, Deshmurkh S, Waller F, van Bel AJE, Kogel KH, Kehr J (2008a) Adaption of aphid stylectomy for analyses of proteins and mRNA in barley phloem sap. J. Exp. Bot. 59, 3297–3306.
Gaupels F, Knauer T, van Bel AJE (2008b) A combinatory approach for analysis of protein sets in barley sieve-tube samples using EDTA-facilitated exudation and aphid stylectomy. J. Plant Physiol. 165, 95–103.
Gendre D, Czernic P, Conejero G, Pianelli K, Briat J, Lebrun M, Mari S (2007) TcYSL3, a member of the YSL gene family from the hyper-accumulator Thlaspi caerulescens, encodes a nicotianamine-Ni/Fetransporter. Plant J. 49, 1–15.
Genoud T, Buchala AJ, Chua NH, Metraux JP (2002) Phytochrome signalling modulates the SA-perceptive pathway in Arabidopsis. Plant J. 31, 87–95.
Ghanem ME, Albacete A, Smigocki AC, Fr′ebort I, Posp′?silov′a H, Mart′?nez-And′ujar C, Acosta M, S′anchez-Bravo J, Lutts S, Dodd IC, Perez-Alfocea F (2011) Root-synthesized cytokinins ′ improve shoot growth and fruit yield in salinized tomato (Solanum lycopersicum L.) plants. J. Exp. Bot. 62, 125–140.
Giaquinta RT (1983) Phloem loading of sucrose. Annu. Rev. Plant Physiol. 34, 347–387.
Giavalisco P, Kapitza K, Kolasa A, Buhtz A, Kehr J (2006) Towards the proteome of Brassica napus phloem sap. Proteomics 6, 896– 909.
Glazebrook J, Ausubel FM (1994) Isolation of phytoalexin-de?cient mutants of Arabidopsis thaliana and characterization of their inter- actions with bacterial pathogens. Proc. Natl. Acad. Sci. USA 91, 8955–8959.
Glazebrook J, Rogers EE, Ausubel FM (1996) Isolation of Arabidopsis mutants with enhanced disease susceptibility by direct screening. Genetics 143, 973–982.
Golecki B, Schulz A, Carstens-Behrens U, Kollmann R (1998) Evidence for graft transmission of structural phloem proteins or their precursors in heterografts of Cucurbitaceae. Planta 206, 630–640.
Golecki B, Schulz A, Thompson GA (1999) Translocation of structural P proteins in the phloem. Plant Cell 11, 127–140.
Gomez-Roldan V, Fermas S, Brewer PB, Puech-Pag`es V, Dun EA, Pillot JP, Letisse F, Matusova R, Danoun S, Portais JC, Bouwmeester H, B′ecard G, Beveridge CA, Rameau C, Rochange SF (2008) Strigolactone inhibition of shoot branching. Nature 455, 189–194.
Gould N, Minchin PEH, Thorpe MR (2004a) Direct measurements of sieve element hydrostatic pressure reveal strong regulation after pathway blockage. Funct. Plant Biol. 31, 987–993.
Gould N, Thorpe MR, Koroleva O, Minchin PEH (2005) Phloem hydrostatic pressure relates to solute loading rate: A direct test of the Munch hypothesis. Funct. Plant Biol. 32, 1019–1026. ¨
Gould N, Thorpe MR, Minchin PEH, Pritchard J, White PJ (2004b) Solute is imported to elongating root cells of barley as a pressure driven-?ow of solution. Funct. Plant Biol. 31, 391–397.
Grimmer C, Komor E (1999) Assimilate export by leaves of Ricinus communis L. growing under normal and elevated carbon dioxide concentrations: The same rate during the day, a different rate at night. Planta 209, 275–281.
Grodzinski B, Jiao J, Leonardos ED (1998) Estimating photosynthe- sis and concurrent export rates in C3 and C4 species at ambient and elevated CO2. Plant Physiol. 117, 207–215.
Grusak MA (1994) Iron transport to developing ovules of Pisum sativum. (I. seed import characteristics and phloem iron-loading capacity of source regions). Plant Physiol. 104, 649–655.
Guelette BS, Benning UF, Hoffmann-Benning S (2012) Identi?ca- tion of lipids and lipid-binding proteins in phloem exudates from Arabidopsis thaliana. J. Exp. Bot. 63, 3603–3616.
Guo S, Zhang J, Sun H, Salse J, Lucas WJ, Zhang H, Zheng Y, Mao L, Ren Y, Wang Z, Min J, Guo X, Murat F, Ham BK, Zhang Z, Gao S, Huang M, Xu Y, Zhong S, Bombarely A, Mueller LA, Zhao H, He H, Zhang Y, Zhang Z, Huang S, Tan T, Pang E, Lin K, Hu Q, Kuang H, Ni P, Wang B, Liu J, Kou Q, Hou W, Zou X, Jiang J, Gong G, Klee K, Schoof H, Huang Y, Hu X, Dong S, Liang D, Wang J, Wu K, Xia Y, Zhao X, Zheng Z, Xing M, Liang X, Huang B, Lv T, Wang J, Yin Y, Yi H, Li R, Wu M, Levi A, Zhang X, Giovannoni JJ, Wang J, Li Y, Fei Z, Xu Y (2012) The draft genome of watermelon (Citrullus lunatus) and resequencing of 20 diverse accessions. Nat. Genet. 45, 51–58.
Guo WJ, Bundithya W, Goldsbrough PB (2003) Characterization of the Arabidopsis metallothionein gene family: Tissue-speci?c expression and induction during senescence and in response to copper. New Phytol. 159, 369–381.
Guo WJ, Meetam M, Goldsbrough PB (2008) Examining the speci?c contributions of individual Arabidopsis metallothioneins to copper distribution and metal tolerance. Plant Physiol. 146, 1697–1706.
Hacke U, Sauter JJ (1996) Xylem dysfunction during winter and recovery of hydraulic conductivity in diffuse-porous and ring-porous trees. Oecologia 105, 435–439.
Hacke UG, Sperry JS (2003) Limits to xylem re?lling under negative pressure in Laurus nobilis and Acer negundo. Plant Cell Environ. 26, 303–311.
Hacke UG, Sperry JS, Pockman WP, Davis SD, McCulloh KA (2001a) Trends in wood density and structure are linked to pre- vention of xylem implosion by negative pressure. Oecologia 126, 457–461.
Hacke UG, Sperry JS, Wheeler JK, Castro L (2006) Scaling of angiosperm xylem structure with safety and ef?ciency. Tree Physiol. 26, 689–701.
Hacke UG, Stiller V, Sperry JS, Pittermann J, McCulloh KA (2001b) Cavitation fatigue: Embolism and re?lling cycles can weaken cavitation resistance of xylem. Plant Physiol. 125, 779– 786.
Hacke UG, Jansen S (2009) Embolism resistance of three borea conifers varies with pit structure. New Phytol. 182, 675–686.
Ham B-K, Brandom J, Xoconostle-Cazares, B, Ringgold V, Lough ′ TJ, Lucas WJ (2009) Polypyrimidine tract binding protein, Cm- RBP50, forms the basis of a pumpkin phloem ribonucleoprotein complex. Plant Cell 21, 197–215.
Hamburger D, Rezzonico E, MacDonald-Comber Petetot J, ′ Somerville C, Poirier Y (2002) Identi?cation and characterization of the Arabidopsis PHO1 gene involved in phosphate loading to the xylem. Plant Cell 14, 889–902.
Hamilton AJ, Baulcombe DC (1999) A species of small antisense RNA in posttranscriptional gene silencing in plants. Science 286, 950–952.
Han JJ, Lin W, Oda Y, Cui KM, Fukuda H, He XQ (2012) The proteasome is responsible for caspase-3-like activity during xylem development. Plant J. 72, 129–141.
Hanikenne M, Talke IN, Haydon MJ, Lanz C, Nolte A, Motte P, Kroymann J, Weigel D, Kramer U (2008) Evolution of metal ¨ hyperaccumulation required cis-regulatory changes and triplication of HMA4. Nature 453, 391–395.
Hannapel DJ (2010) A model system of development regulated by the long-distance transport of mRNA. J. Integr. Plant Biol. 52, 40–52.
Hanzawa Y, Takahashi T, Komeda Y (1997) ACL5: An Arabidopsis gene required for internodal elongation after ?owering. Plant J. 12, 863–874.
Hardtke CS, Berleth T (1998) The Arabidopsis gene MONOPTEROS encodes a transcription factor mediating embryo axis formation and vascular development. EMBO J. 17, 1405–1411.
Hardtke CS, Ckurshumova W, Vidaurre DP, Singh SA, Stamatiou G, Tiwari SB, Hagen G, Guilfoyle TJ, Berleth T (2004) Overlapping and non-redundant functions of the Arabidopsis auxin response factors MONOPTEROS and NONPHOTOTROPIC HYPOCOTYL 4. Development 131, 1089–1100.
Haritatos E, Medville R, Turgeon R (2000) Minor vein structure and sugar transport in Arabidopsis thaliana. Planta 211, 105– 111.
Hassan Z, Aarts MGM (2011) Opportunities and feasibilities for biotechnological improvement of Zn, Cd or Ni tolerance and ac- cumulation in plants. Environ. Exp. Bot. 72, 53–63.
Hawkesford MJ (2003) Transporter gene families in plants: The sulphate transporter gene family – redundancy or specialization? Physiol. Plant. 117, 155–163.
Haywood V, Yu TS, Huang NC, Lucas WJ (2005) Phloem long- distance traf?cking of GIBBERELLIC ACID INSENSITIVE RNA regulates leaf development. Plant J. 42, 49–68.
He Y, Gan S (2002) A gene encoding an acyl hydrolase is involved in leaf senescence in Arabidopsis. Plant Cell 14, 805–815.
Heidel AJ, Clarke JD, Antonovics J, Dong X (2004) Fitness costs of mutations affecting the systemic acquired resistance pathway in Arabidopsis thaliana. Genetics 168, 2197–2206.
Heidrich K, Wirthmueller L, Tasset C, Pouzet C, Deslandes L, Parker JE (2011) Arabidopsis EDS1 connects pathogen effec- tor recognition to cell compartment-speci?c immune responses. Science 334, 1401–1404.
Heil M, Baldwin IT (2002) Fitness costs of induced resistance: Emerg- ing experimental support for a slippery concept. Trends Plant Sci. 7, 61–66.
Herbette S, Cochard H (2010) Calcium is a major determinant of xylem vulnerability to cavitation. Plant Physiol. 153, 1932–1939.
Herbik A, Giritch A, Horstmann C, Becker R, Balzer HJ, Baumlein H, ¨ Stephan UW (1996) Iron and copper nutrition-dependent changes in protein expression in a tomato wild type and the nicotianamine- free mutant chloronerva. Plant Physiol. 111, 533–540.
Hermans C, Hammond JP, White PJ, Verbuggen N (2006) How do plants respond to nutrient shortage by biomass allocation? Trends Plant Sci. 11, 610–617.
Hickey L (1973) Classi?cation of the architecture of dicotyledonous leaves. Amer. J. Bot. 60, 17–33.
Hirakawa Y, Kondo Y, Fukuda H (2010) Regulation of vascular development by CLE peptide-receptor systems. J. Integr. Plant Biol. 52, 8–16.
Hirakawa Y, Kondo Y, Fukuda H (2010) TDIF peptide signaling regulates vascular stem cell proliferation via the WOX4 homeobox gene in Arabidopsis. Plant Cell 22, 2618–2629.
Hirakawa Y, Kondo Y, Fukuda H (2011) Establishment and mainte- nance of vascular cell communities through local signaling. Curr. Opin. Plant Biol. 14, 17–23.
Hirakawa Y, Shinohara H, Kondo Y, Inoue A, Nakanomyo I, Ogawa M, Sawa S, Ohashi-Ito K, Matsubayashi Y, Fukuda H (2008) Non-cell-autonomous control of vascular stem cell fate by a CLE peptide/receptor system. Proc. Natl. Acad. Sci. USA 105, 15208– 15213.
Hirose N, Takei K, Kuroha T, Kamada-Nobusada T, Hayashi H, Sakakibara H (2008) Regulation of cytokinin biosynthesis, com- partmentalization and translocation. J. Exp. Bot. 59, 75–83.
Hoad GV (1995) Transport of hormones in the phloem of higher plants. Plant Growth Reg. 16, 173–182.
Hoffman-Thoma G, van Bel AJE, Ehlers K (2001) Ultrastructure of minor-vein phloem and assimilate export in summer and winter leaves of the symplasmically loading evergreens Ajuga reptans L., Aucuba japonica Thumb. and Hedrix helix L. Planta 212, 231–242.
Holbrook NM, Shashidhar VR, James RA, Munns R (2002) Stomatal control in tomato with ABA-de?cient roots: Response of grafted plants to soil drying. J. Exp. Bot. 53, 1503–1514.
Holtta T, Mencuccini M, Nikinmaa E (2011) A carbon cost-gain model explains the observed patterns of xylem safety and ef?ciency. Plant Cell Environ. 34, 1819–1834.
Holtta T, Juurola E, Lindfors L, Porcar-Castell A (2012) Cavitation induced by a surfactant leads to transient release of water stress and subsequent “run away” embolism in scots pine (Pinus sylvestris) seedlings. J. Exp. Bot. 63, 1057–1067.
Hu G, deHart AKA, Li Y, Ustach C, Handley V, Navarre R, Hwang CF, Aegerter BJ, Williamson VM, Baker B (2005) EDS1 in tomato is required for resistance mediated by TIR-class R genes and the receptor-like R gene Ve. Plant J. 42, 376–391.
Hu H, Penn SG, Lebrilla CB, Brown PH (1997) Isolation and character- ization of soluble boron complexes in higher plants: The mechanism of phloem mobility of boron. Plant Physiol. 113, 649–655.
Hu L, Sun H, Li R, Zhang L, Wang S, Sui X, Zhang Z (2011) Phloem unloading follows an extensive apoplasmic pathway in cucumber (Cucumis sativa L.) fruit from anthesis to marketable maturing stage. Plant Cell Environ. 40, 743–748.
Huang SW, Li RQ, Zhang ZH, Li L, Gu XF, Fan W, Lucas WJ, Wang XW, Xie BY, Ni PX, Ren YY, Zhu HM, Li J, Lin K, Jin WW, Fei ZJ, Li GC, Staub J, Kilian A, van der Vossen EAG, Wu Y, Guo J, He J, Jia ZQ, Ren Y, Tian G, Lu Y, Ruan J, Qian WB, Wang MW, Huang QF, Li B, Xuan ZL, Cao JJ, Asan, Wu ZG, Zhang JB, Cai QL, Bai YQ, Zhao BW, Han YH, Li Y, Li
XF, Wang SH, Shi QX, Liu SQ, Cho WK, Kim JY, Xu Y, Heller-Uszynska K, Miao H, Cheng ZC, Zhang SP, Wu J, Yang YH,Kang HX, Li M, Liang HQ, Ren XL, Shi ZB, Wen M, Jian M,Yang HL, Zhang GJ, Yang ZT, Chen R, Liu SF, Li JW, Ma LJ,Liu H, Zhou Y, Zhao J, Fang XD, Li GQ, Fang L, Li YR, Liu DY,Zheng HK, Zhang Y, Qin N, Li Z, Yang GH, Yang S, Bolund L,Kristiansen K, Zheng HC, Li SC, Zhang XQ, Yang HM, Wang J,Sun RF, Zhang BX, Jiang SZ, Wang J, Du YC, Li SG (2009) Thegenome of the cucumber, Cucumis sativus L. Nat. Genet. 41, 1275–1281.
Huang NC, Yu TS (2009) The sequences of Arabidopsis GA- INSENSITIVE RNA constitute the motifs that are necessary and suf?cient for RNA long-distance traf?cking. Plant J. 59, 921–929.
Huang NC, Jane WN, Chen J, Yu TS (2012) Arabidopsis thaliana CENTRORADIALIS homologue (ATC) acts systemically to inhibit ?oral initiation in Arabidopsis. Plant J. 72, 175–184.
Hubbard RM, Stiller V, Ryan MG, Sperry JS (2001) Stomatal con- ductance and photosynthesis vary linearly with plant hydraulic conductance in ponderosa pine. Plant Cell Environ. 24, 113– 121.
Husbands AY, Chitwood DH, Plavskin Y, Timmermans MC (2009) Signals and prepatterns: New insights into organ polarity in plants. Genes Dev. 23, 1986–1997.
Hussain D, Haydon MJ, Wang Y, Wong E, Sherson SM, Young J, Camakaris J, Harper JF, Cobbett CS (2004) P-type ATPase heavy metal transporters with roles in essential zinc homeostasis in Arabidopsis. Plant Cell 16, 1327–1339.
Ilegems M, Douet V, Meylan-Bettex M, Uyttewaal M, Brand L, Bowman JL, Stieger PA (2010) Interplay of auxin, kanadi and class iii hd-zip transcription factors in vascular tissue formation. Development 137, 975–984.
Imai A, Hanzawa Y, Komura M, Yamamoto KT, Komeda Y, Taka- hashi T (2006) The dwarf phenotype of the Arabidopsis acl5 mutant is suppressed by a mutation in an upstream ORF of a bHLH gene. Development 133, 3575–3585.
Imai A, Komura M, Kawano E, Kuwashiro Y Takahashi T (2008) A semi-dominant mutation in the ribosomal protein L10 gene suppresses the dwarf phenotype of the acl5 mutant in Arabidopsis thaliana. Plant J. 56, 881–890.
Ingle RA, Mugford ST, Rees JD, Campbell MM, Smith JAC (2005) Constitutively high expression of the histidine biosynthetic pathway contributes to nickel tolerance in hyperaccumulator plants. Plant Cell 17, 2089–2106.
Ingram P, Dettmer J, Helariutta Y, Malamy JE (2011) Arabidopsis lateral root development 3 is essential for early phloem development and function, and hence for normal root system development. Plant J. 68, 455–467.
Irtelli B, Petrucci WA, Navari-Izzo F (2009) Nicotianamine and histidine/proline are, respectively, the most important copper chelators in xylem sap of Brassica carinata under condi- tions of copper de?ciency and excess. J. Exp. Bot. 60, 269– 277.
Ishihara T, Sekine KT, Hase S, Kanayama Y, Seo S, Ohashi Y, Kusano T, Shibata D, Shah J, Takahashi H (2008) Overexpres- sion of the Arabidopsis thaliana EDS5 gene enhances resistance to viruses. Plant Biol. 10, 451–461.
Ito J, Fukuda H (2002) ZEN1 is a key enzyme in the degradation of nuclear DNA during programmed cell death of tracheary elements. Plant Cell 14, 3201–3211.
Ito Y, Nakanomyo I, Motose H, Iwamoto K, Sawa S, Dohmae N, Fukuda H (2006) Dodeca-cle peptides as suppressors of plant stem cell differentiation. Science 313, 842–845.
Ivanov R, Brumbarova T, Bauer P (2012) Fitting into the harsh reality: Regulation of iron-de?ciency responses in dicotyledonous plants. Mol. Plant 5, 27–42.
Iwai H, Usui M, Hoshino H, Kamada H, Matsunaga T, Kakegawa K, Ishii T, Satoh S (2003) Analysis of sugars in squash xylem sap. Plant Cell Physiol. 44, 582–587.
Izhaki A, Bowman JL (2007) KANADI and Class III HD-ZIP gene families regulate embryo patterning and modulate auxin ?ow during embryogenesis in Arabidopsis. Plant Cell 19, 495–508.
Jack E, Hakvoort HWJ, Reumer A, Verkleij JAC, Schat H, Ernst WHO (2007) Real-time PCR analysis of metallothionein- 2b expression in metallicolous and non-metallicolous popula- tions of Silene vulgaris (Moench) Garcke. Environ. Exp. Bot. 59, 84–91.
Jacobson AL, Pratt RB (2012) No evidence for an open vessel effect in centrifuge-based vulnerability curves of a long-vesseled liana (Vitis vinifera). New Phytol. 194, 982–990.
Jacobson AL, Pratt RB, Ewers FW, Davis SD (2007) Cavitation resistance among 26 chaparral species of southern California. Ecol. Mon. 77, 99–115.
Jansen S, Baas P, Smets E (2001) Vestured pits: Their occurrence and systematic importance in eudicots. Taxon 50, 135–167.
Jansen S, Choat B, Pletsers A (2009) Morphological variation in intervessel pit membranes and implications to xylem function in angiosperms. Am. J. Bot. 96, 409–419.
Jansen S, Lamy JB, Burlett R, Cochard H, Gasson P, Delzon S (2012) Plasmodesmatal pores in the torus of bordered pit mem- branes affect cavitation resistance of conifer xylem. Plant Cell Environ. 35, 1109–1120.
Jarbeau JA, Ewers FW, Davis SD (1995) The mechanism of water- stress-induced embolism in two species of chaparral shrubs. Plant Cell Environ. 18, 189–196.
Jensen KH, Lee J, Bohr T, Bruus H, Holbrook NM, Zwieniecki MA (2011) Optimality of the Munch mechanism for translocation ¨of sugars in plants. J. Royal Soc. Interface 8, 1155–1165.
Jensen KH, Liesche J, Bohr T, Schulz A (2012) Universality of phloem transport in seed plants. Plant Cell Environ. 35, 1065–1076.
Jeong R-D, Chandra-Shekara AC, Barman SR, Navarre DA, Klessig D, Kachroo A, Kachroo P (2010) CRYPTOCHROME 2 and PHO- TOTROPIN 2 regulate resistance protein mediated viral defense by negatively regulating a E3 ubiquitin ligase. Proc. Natl. Acad. Sci. USA 107, 13538–13543.
Ji J, Strable J, Shimizu R, Koenig D, Sinha N, Scanlon MJ (2010) WOX4 promotes procambial development. Plant Physiol. 152, 1346–1356.
Jia W, Davies WJ (2008) Modi?cation of leaf apoplastic pH in relationf to stomatal sensitivity to root-sourced abscisic acid signals. Plant . Physiol. 143, 68–77.
Jiang F, Hartung W (2008) Long-distance signalling of abscisic acid (ABA): The factors regulating the intensity of the ABA signal. J. Exp. Bot. 59, 37–43.
Johri M (2008) Hormonal regulation in green plant lineage families. Physiol. Mol. Biol. Plants 14, 23–38.
Jones JD, Dangl JL (2006) The plant immune system. Nature 444, 323–329.
Jorgensen RA, Atkinson RG, Forster RLS, Lucas WJ (1998) An RNA-based information superhighway in plants. Science 279, 1486–1487.
Jun JH, Fiume E, Fletcher JC (2008) The CLE family of plant polypeptide signaling molecules. Cell Mol. Life Sci. 65, 743–755.
Jung HW, Tschaplinkski TJ, Wang L, Glazebrook J, Greenberg JT (2009) Priming in systemic plant immunity. Science 324, 89–91.
Kachroo A, Kachroo P (2006) Salicylic acid-, jasmonic acid- and ethylene-mediated regulation of plant defense signaling. In: Setlow J, ed. Genetic Engineering, Principles and Methods. 28, 55–83.
Kachroo A, Lapchyk L, Fukushigae H, Hildebrand D, Klessig D, Kachroo P (2003) Plastidial fatty acid signaling modulates salicylic acid- and jasmonic acid-mediated defense pathways in the Ara- bidopsis ssi2 mutant. Plant Cell 12, 2952–2965.
Kachroo A, Venugopal SC, Lapchyk L, Falcone D, Hildebrand D, Kachroo P (2004) Oleic acid levels regulated by glycerolipid metabolism modulate defense gene expression in Arabidopsis. Proc. Natl. Acad. Sci. USA 101, 5152–5257.
Kachroo P, Kachroo A, Lapchyk L, Hildebrand D, Klessig D (2003) Restoration of defective cross talk in ssi2 mutant: Role of salicylic acid, jasmonic acid, and fatty acids in SSI2-mediated signaling. Mol. Plant-Microbe Interact. 11, 1022–1029.
Kachroo P, Shanklin J, Shah J, Whittle E, Klessig D (2001) A fatty acid desaturase modulates the activation of defense signaling pathways in plants. Proc. Natl. Acad. Sci. USA 98, 9448–9453.
Kachroo P, Srivathsa CV, Navarre DA, Lapchyk L, Kachroo A (2005) Role of salicylic acid and fatty acid desaturation pathways in ssi2- mediated signaling. Plant Physiol. 139, 1717–1735.
Kachroo P, Yoshioka K, Shah J, Dooner H, Klessig DF (2000) Resistance to turnip crinkle virus in Arabidopsis requires two host genes and is salicylic acid dependent but NPR1, ethylene and jasmonate independent. Plant Cell 12, 677–690.
Kakehi J, Kuwashiro Y, Motose H, Igarashi K, Takahashi T (2010) Norspermine substitutes for thermospermine in the control of stem elongation in Arabidopsis thaliana. FEBS Lett. 584, 3042–3046.
Kakehi JI, Kuwashiro Y, Niitsu Y, Takahashi T (2008) Thermosper- mine is required for stem elongation in Arabidopsis thaliana. Plant Cell Physiol. 49, 1342–1349.
Kallarackal J, Milburn JA (1984) Speci?c mass transfer, sink- controlled phloem translocation in castor bean. Aust. J. Plant Physiol. 10, 561–568.
Kang J, Dengler N (2002) Cell cycling frequency and expression of the homeobox gene ATHB-8 during leaf vein development in Arabidopsis. Planta 216, 212–219.
Kang J, Dengler N (2004) Vein pattern development in adult leaves of Arabidopsis thaliana. Int. J. Plant Sci. 165, 231–242.
Kang J, Mizukami Y, Wang H, Fowke L, Dengler NG (2007) Modi- ?cation of cell proliferation patterns alters leaf vein architecture in Arabidopsis thaliana. Planta 226, 1207–1218.
Karpinski S, Gabrys H, Mateo A, Karpinska B, Mullineaux P (2003) Light perception in plant disease defense signaling. Curr. Opin. Plant Biol. 6, 390–396.
Kaufman I, Schulze-Till T, Schneider H, Zimmermann U, Jakob P, Wegner L (2009) Function repair of embolized vessels in maize roots after temporal drought stress, as demonstrated by magnetic resonance imaging. New Phytol. 184, 245–256.
Kempers R, van Bel AJE (1997) Symplasmic connections between sieve element and companion cell in the stem of Vicia fava L. have a molecular exclusion limit of at least 10 kD. Planta 201, 195–201.
Kenrick P, Crane PR (1997) The origin and early evolution of plants on land. Nature 389, 33–39.
Kerkeb L, Kramer U (2003) The role of free histidine in xylem loading ¨ of nickel in Alyssum lesbiacum and Brassica juncea. Plant Physiol. 131, 716–724.
Kerstetter RA, Bollman K, Taylor RA, Bomblies K, Poethig RS (2001) KANADI regulates organ polarity in Arabidopsis. Nature 411 706–709.
Kiba T, Yamada H, Sato S, Kato T, Tabata S, Yamashino T, Mizuno T (2003) The type-A response regulator, ARR15, acts as a negative regulator in the cytokinin-mediated signal transduction in Arabidopsis thaliana. Plant Cell Physiol. 44, 868–874.
Kim HS, Delaney TP (2002) Over-expression of TGA5, which en- codes a bZIP transcription factor that interacts with NIM1/NPR1, confers SAR-independent resistance in Arabidopsis thaliana to Peronospora parasitica. Plant J. 32, 151–163.
Kim M, Canio W, Kessler S, Sinha N (2001) Developmental changes due to long-distance movement of a homeobox fusion transcript in tomato. Science 293, 287–289.
Klatte M, Schuler M, Wirtz M, Fink-Straube C, Hell R, Bauer P (2009) The analysis of Arabidopsis nicotianamine synthase mutants reveals functions for nicotianamine in seed iron loading and iron de?ciency responses. Plant Physiol. 150, 257–271.
Kobayashi Y, Kuroda K, Kimura K, Southron-Francis JL, Furuzawa A, Iuchi S, Kobayashi M, Taylor GJ, Koyama H (2008) Amino acid polymorphisms in strictly conserved domains of a P-type ATPase HMA5 are involved in the mechanism of copper tolerance variation in Arabidopsis. Plant Physiol. 148, 969–980.
Kohlen W, Charnikhova T, Liu Q, Bours R, Domagalska MA, Beguerie S, Verstappen F, Leyser O, Bouwmeester H, Ruyter-Spira C (2011) Strigolactones are transported through the xylemand play a key role in shoot architectural response to phosphatede?ciency in nonarbuscular mycorrhizal host Arabidopsis. PlantPhysiol. 155, 974–987.
Kohonen M, Helland A (2009) On the function of wall sculpturing in xylem conduits. J. Bionics Eng. 6, 324–329.
Koike S, Inoue H, Mizuno D, Takahashi M, Nakanishi H, Mori S, Nishizawa N (2004) OsYSL2 is a rice metal-nicotianamine transporter that is regulated by iron and expressed in the phloem. Plant J. 39, 415–424.
Kondo Y, Hirakawa Y, Fukuda H (2011) CLE peptides can negatively regulate protoxylem vessel formation via cytokinin signaling. Plant Cell Physiol. 52, 37–48.
Koo YJ, Kim MA, Kim EH, Song JT, Jung C, Moon JK, Kim JH, Seo HS, Song SI, Kim JK, Lee JS, Cheong JJ, Choi YD (2007) Overexpression of salicylic acid carboxyl methyltransferase reduces salicylic acid-mediated pathogen resistance in Arabidopsis thaliana. Plant Mol. Biol. 64, 1–15.
Koroleva OA, Tomos AD, Farrar J, Pollock CJ (2002) Changes in osmotic and turgor pressure in response to sugar accumulation in barley source leaves. Planta 215, 210–219.
Kramer EM, Lewandowski M, Beri S, Bernard J, Borkowski M, Borkowski MH, Burch?eld LA, Mathisen B, Normanly J (2008) Auxin gradients are associated with polarity changes in trees. Science 320, 1610.
Kramer U (2010) Metal hyperaccumulation in plants. Annu. Rev. Plant ¨ Biol. 61, 517–534.
Kramer U, Cotter-Howells JD, Charnock JM, Baker AJM, Smith JAC ¨ (1996) Free histidine as a metal chelator in plants that accumulate nickel. Nature 379, 635–638.
Krecek P, Skupa P, Libus J, Naramoto S, Tejos R, Friml J, Zazimalova E (2009) The pin-formed (pin) protein family of auxin transporters. Genome Biol. 10, 249.
Krugel U, Veenhoff LM, Langbein J, Wiederhold E, Liesche J, ¨ Friedrich T, Grimm B, Martinoia E, Poolman B, Kuhn C (2008) ¨ Transport and sorting of Solanum tuberosum sucrose transporter SUT1 is affected by posttranslational modi?cation. Plant Cell 20, 2497–2513.
Kruger C, Berkowitz O, Stephan U, Hell R (2002) A metal-binding ¨ member of the late embryogenesis abundant protein family trans- ports iron in the phloem of Ricinus communis L. J. Biol. Chem. 277, 25062–25069.
Kubo M, Udagawa M, Nishikubo N, Horiguchi G, Yamaguchi M, Ito J, Mimura T, Fukuda H, Demura T (2005) Transcription switches for protoxylem and metaxylem vessel formation. Genes Dev. 19, 1855–1860.
Kudo T, Kiba T, Sakakibara H (2010) Metabolism and long-distance translocation of cytokinins. J. Integr. Plant Biol. 52, 53–60.
Kumar D, Klessig DF (2003) High-af?nity salicylic acid-binding protein 2 is required for plant innate immunity and has salicylic acid stimulated lipase activity. Proc. Natl. Acad. Sci. USA 100, 16101– 16106.
Kunkel BN, Brooks DM (2002) Cross talk between signaling pathways. Curr. Opin. Plant Biol. 5, 325–331.
Kupper H, Mijovilovich A, Meyer-Klaucke W, Kroneck PMH (2004) ¨ Tissue- and age-dependent differences in the complexation of cadmium and zinc in the cadmium/zinc hyperaccumulator Thlaspi caerulescens (Ganges Ecotype) revealed by X-ray absorption spec- troscopy. Plant Physiol. 134, 748–757.
Kuriyama H, Fukuda H (2002) Developmental programmed cell death in plants. Curr. Opin. Plant Biol. 5, 568–573.
Kwon SI, Cho HJ, Jung JH, Yoshimoto K, Park OK (2010) The RabGTPase RabG3b functions in autophagy and contributes to L tracheary element differentiation in Arabidopsis. Plant J. 64, 151– 164.
Lachaud S, Maurousset L (1996) Occurrence of plasmodesmata between differentiating vessels and other xylem cells in Sorbus torminalis L. Crantz and their fate during xylem maturation. Pro-toplasma 191, 220–226.
Lai F, Thacker J, Li Y, Doerner P (2007) Cell division activity determines the magnitude of phosphate starvation responses in Arabidopsis. Plant J. 50, 545–556.
Lalonde S, Tegeder M, Throne-Holst M, Frommer WB, Patrick JW (2003) Phloem loading, unloading of amino acids, sugars. Plant Cell Environ. 26, 37–56.
Langan S, Ewers FW, Davis SD (1997) Xylem dysfunction caused by water stress and freezing in two species of co-occurring chaparral shrubs. Plant Cell Environ. 20, 425–437.
Lau S, Shao N, Bock R, Jurgens G, De Smet I (2009) Auxin ¨ signaling in algal lineages: Fact or myth? Trends Plant Sci. 14, 182– 188.
Lavicoli A, Boutet E, Buchala A, Metraux JP (2003) Induced resis- tance in Arabidopsis thaliana in response to root inoculation with Pseudomonas ?uorescens CHA0. Mol. Plant-Microbe Interact. 16, 851–858.
Lawton K, Weymann K, Friedrich L, Vernooij B, Uknes S, Ryals J (1995) Systemic acquired resistance in Arabidopsis requires salicylic acid but not ethylene. Mol. Plant-Microbe Interact. 8, 863– 870.
Le Jean ML, Schikora A, Mari S, Briat JF, Curie C (2005) A loss-of- function mutation in AtYSL1 reveals its role in iron and nicotianamine seed loading. Plant J. 44, 769–782.
Lee DK, Sieburth LE (2012) The bps signal: Embryonic arrest from an auxin-independent mechanism in bypass triple mutants. Plant Signal. Behav. 7, 698–700.
Lee DK, Van Norman JM, Murphy C, Adhikari E, Reed JW, Sieburth LE (2012) In the absence of BYPASS1-related gene function, the bps signal disrupts embryogenesis by an auxin-independent mechanism. Development 139, 805–815.
Lee HI, Raskin I (1998) Glucosylation of salicylic acid in Nicotiana tabacum cv. Xanthi-nc. Phytopathol. 88, 692–697.
Lee HI, Raskin I (1999) Puri?cation, cloning, and expression of a pathogen inducible UDP-glucose:salicylic acid glucosuyltransferase from tobacco. J. Biol. Chem. 274, 36637–36642.
Lee JY, Colinas J, Wang JY, Mace D, Ohler U, Benfey PN (2006) Transcriptional and posttranscriptional regulation of transcription) factor expression in Arabidopsis roots. Proc. Natl. Acad. Sci. USA f 103, 6055–6060.
Lee J, Holbrook NM, Zwieniecki MA (2012) Ion-induced changes in the structure of bordered pit membranes. Front. Plant Sci. 3, 1–4.
Lee JY, Yoo BC, Rojas M, Gomez Ospina N, Staehelin LA, Lucas WJ (2003) Selective traf?cking of non-cell-autonomous proteins mediated by NtNCAPP1. Science 299, 392–396.
Leggewie G, Kolbe A, Lemoine R, Roessner U, Lytovchenko A, Zuther E, Kehr J, Frommer WB, Riemeier JW, Willmitzer L, Fernie AR (2003) Overexpression of the sucrose transporter SoSUT1 in potato results in alterations in leaf carbon partitioning and in tuber metabolism but has little impact on tuber morphology. Planta 217, 158–167.
Lehesranta SJ, Lichtenberger R, Helariutta Y (2010) Cell-to-cell communication in vascular morphogenesis. Curr. Opin. Plant Biol. 13, 59–65.
Lehmann K, Hause B, Altmann D, Kock M (2001) Tomato ribonucle- ase LX with the functional endoplasmic reticulum retention motif HDEF is expressed during programmed cell death processes, including xylem differentiation, germination, and senescence. Plant Physiol. 127, 436–449.
Lehto T, Lavola A, Julkunen-Tiitto R, Aphalo PJ (2004) Boron retranslocation in scots pine and norway spruce. Tree Physiol. 24, 1011–1017.
Lens F, Sperry JS, Christman MA, Choat B, Rabaey D, Jansen S (2010) Testing hypotheses that link wood anatomy to cavitation resistance and hydraulic conductivity in the genus Acer. New Phytol. 190, 709–723.
Leonardos ED, Micallef BJ, Micallef MC, Grodzinski B (2006) Diel patterns of leaf export and of main shoot growth for Flaveria linearis with altered leaf sucrose-starch partitioning. J. Exp. Bot. 57, 801– 814.
Levesque MP, Vernoux T, Busch W, Cui H, Wang JY, Blilou I, Hassan H, Nakajima K, Matsumoto N, Lohmann JU, Scheres B, Benfey PN (2006) Whole-genome analysis of the SHORT-ROOT developmental pathway in Arabidopsis. PLoS Biol. 4, e143.
Li CY, Zhang K, Zeng XW, Jackson S, Zhou Y, Hong YG (2009) A cis element within Flowering Locus T mRNA determines its mobility and facilitates traf?cking of heterologous viral RNA. J. Virol. 83, 3540–3548.
Li P, Ham BK, Lucas WJ (2011) CmRBP50 phosphorylation is essential for assembly of a stable phloem-mobile high-af?nity ri- bonucleoprotein complex. J. Biol. Chem. 286, 23142–23149.
Li X, Zhang Y, Clarke JD, Li Y, Dong X (1999) Identi?ca- tion and cloning of a negative regulator of systemic acquired resistance, SNI1, through a screen for supressors of npr1-1. Cell 3, 329–339.
Li Y, Beisson F, Koo AJ, Molina I, Pollard M, Ohlrogge J (2007) Identi?cation of acyltransferases required for cutin biosynthesis andproduction of cutin with suberin-like monomers. Proc. Natl. Acad.Sci. USA 104, 18339–18344.
Liao MT, Hedley MJ, Woolley DJ, Brooks RR, Nichols MA (2000) Copper uptake and translocation in chicory (Cichorium intybus L. cv Grasslands Puna) and tomato (Lycopersicon esculentum Mill. cv Rondy) plants grown in NFT system. II. The role of nicotianamine and histidine in xylem sap copper transport. Plant Soil 223, 243– 252.
Liesche J, Schulz A (2012) In vivo quanti?cation of cell coupling in plants with different phloem loading strategies. Plant Physiol. 159, 355–365.
Lifschitz E, Eviatar T, Rozman A, Shalit A, Goldshmidt A, Amsellem Z, Alvarez JP, Eshed Y (2006) The tomato FT ortholog triggers systemic signals that regulate growth and ?owering and substitute for diverse environmental stimuli. Proc. Natl. Acad. Sci. USA 103, 6398–6403.
Ligrone R, Duckett JG, Renzaglia KS (2000) Conducting tissues and phyletic relationships of bryophytes. Phil. Trans. R. Soc. Lond. B. Biol. Sci. 355, 795–813.
Ligrone R, Duckett JG, Renzaglia KS (2012) Major transitions in the evolution of early land plants: A bryological perspective. Ann. Bot. 109, 851–871.
Lin MK, Belanger H, Lee YJ, Varkonyi-Gasic E, Taoka KI, Miura E, Xoconostle-Cazares B, Gendler K, Jorgensen RA, Phinney ′ B, Lough TJ, Lucas WJ (2007) FT protein may act as the long- distance ?origenic signal in the cucurbits. Plant Cell 19, 1488–1506.
Lin MK, Lee YJ, Lough TJ, Phinney BS, Lucas WJ (2009) Analysis of the pumpkin phloem proteome provides insights into angiosperm sieve tube function. Mol. Cell. Proteomics 8, 343–356.
Lin SI, Chiang SF, Lin WY, Chen JW, Tseng CY, Wu PC, Chiou TJ (2008) Regulatory network of microRNA399 and PHO2 by systemic signaling. Plant Physiol. 147, 732–746.
Lindermayr C, Sell S, Muller B, Leister D, Durner J (2010) Redox ¨ regulation of the NPR1-TGA1 system of Arabidopsis thaliana by nitric oxide. Plant Cell 22, 2894–2907.
Linkohr BI, Williamson LC, Fitter AH, Leyser HMO (2002) Nitrate and phosphate availability and distribution have different effects on root system architecture of Arabidopsis. Plant J. 29, 751–760.
Liu G, Holub EB, Alonso JM, Ecker JR, Fobert PR (2005) An Ara- bidopsis NPR1-like gene, NPR4, is required for disease resistance. Plant J. 41, 304–318.
Liu PP, Dahl CC, Klessig DF (2011) The extent to which methyl salicylate is required for systemic acquired resistance is dependent on exposure to light after infection. Plant Physiol. 157, 2216–2226.
Liu TY, Chang CY, Chiou TJ (2009) The long-distance signaling of mineral macronutrients. Curr. Opin. Plant Biol. 12, 312–319.
Liu Y, Schiff M, Marathe R, Dinesh-Kumar SP (2002) Tobacco Rar1, EDS1 and NPR1/NIM1 like genes are required for N-mediated resistance to tobacco mosaic virus. Plant J. 30, 415–429.
Loepfe L, Martinez-Vilalta J, Pinol J, Mencuccini M (2007) The relevance of xylem network structure for plant hydraulic ef?ciency and safety. J. Theor. Biol. 247, 788–803.
Lomax TL, Hicks GR (1992) Speci?c auxin-binding proteins in the plasma membrane: Receptors or transporters? Biochem. Soc. Trans. 20, 64–69.
Loon LCV, Gerritsen YAM, Ritter CE (1987) Identi?cation, puri?cation, and characterization of pathogenesis-related proteins from virus- infected Samsun NN tobacco leaves. Plant Mol. Biol. 9, 593–609.
Lopez-Bucio J, Hernandez-Abreu E, Sanchez-Calderon L, Nieto- ′ ′ ′ ′ Jacobo MF, Simpson J, Herrera-Estrella L (2002) Phosphate availability alters architecture and causes changes in hormone sensitivity in the Arabidopsis root system. Plant Physiol. 129, 244– 256.
Lopez-Millan AF, Morales F, Abad′?a A, Abad′?a J (2000) Effects of ′ ′ iron de?ciency on the composition of the leaf apoplastic ?uid and xylem sap in sugar beet. Implications for iron and carbon transport. Plant Physiol. 124, 873–884.
Lough TJ, Lucas WJ (2006) Integrative plant biology: Role of phloem long-distance macromolecular traf?cking. Annu. Rev. Plant Biol. 57, 203–232.
Lu KJ, Huang NC, Liu YS, Lu CA, Yu TS (2012) Long-distance movement of Arabidopsis FLOWERING LOCUS T RNA participates in systemic ?oral regulation. RNA Biology 9, 653–662.
Lucas WJ (2006) Plant viral movement proteins: Agents for cell-to-cell traf?cking of viral genomes. Virology 344, 169–184.
Lucas WJ, Ding B, van der Schoot C (1993) Plasmodesmata and the supracellular nature of plants. New Phytol. 125, 435–476.
Lucas WJ, Yoo BC, Kragler F (2001) RNA as a long-distance information macromolecule in plants. Nat. Rev. Molec. Cell Biol. 2, 849–857.
Lundmark M, Cavaco AM, Trevanior S, Hurry V (2006) Carbon partitioning and export in transgenic Arabidopsis thaliana with altered capacity for sucrose synthesis grown at low temperature: A role for metabolite transporters. Plant Cell Environ. 29, 1703– 1714.
Ma KW, Flores C, Ma W (2011) Chromatin con?guration as a battle?eld in plant-bacteria interactions. Plant Physiol. 157, 535–543.
Ma Y, Miura E, Ham BK, Cheng HW, Lee YJ, Lucas WJ (2010) Pumpkin eIF5A isoforms interact with components of the transla- tional machinery in the cucurbit sieve tube system. Plant J. 64, 536–550.
Madey E, Nowack LM, Thompson JE (2002) Isolation and character- ization of lipid in phloem sap of canola. Planta 214, 625–634.
Mahonen AP, Bishopp A, Higuchi M, Nieminen KM, Kinoshita K, ¨ ¨ Tormakangas K, Ikeda Y, Oka A, Kakimoto T, Helariutta Y (2006) ¨ ¨ Cytokinin signaling and its inhibitor AHP6 regulate cell fate during vascular development. Science 311, 94–98.
Mahonen AP, Bonke M, Kauppinen L, Riikonen M, Benfey PN, ¨ ¨ Helariutta Y (2000) A novel two-component hybrid molecule regu- lates vascular morphogenesis of the Arabidopsis root. Genes Dev. 14, 2938–2943.
Mahajan A, Bhogale S, Kang IH, Hannapel DJ, Banerjee AK (2012) The mRNA of a knotted1-like transcription factor of potato is phloem mobile. Plant Mol. Biol. 79, 595–608.
Maherali H, Pockman WT, Jackson RB (2003) Adaptive variation in the vulnerability of woody plants to xylem cavitation. Ecology 85, 2184–2199.
Maldonado AM, Doerner P, Dixon RA, Lamb CJ, Cameron RKA (2002) Putative lipid transfer protein involved in systemic resistance signaling in Arabidopsis. Nature 419, 399–403.
Mandal M, Chanda B, Xia Y, Yu K, Sekine K, Gao QM, Selote D, Kachroo A, Kachroo P (2011) Glycerol-3-phosphate and systemic immunity. Plant Signal. Behav. 6, 1871–1874.
Mandal MK, Chandra-Shekara AC, Jeong RD, Yu K, Zhu S, Chanda B, Navarre D, Kachroo A, Kachroo P (2012) Oleic acid-dependent modulation of NITRIC OXIDE ASSOCIATED 1 protein levels regulates nitric oxide-mediated defense signaling in Arabidopsis. Plant Cell 24, 1654–1674.
March-D′?az R, Garc′?a-Dom′?nguez M, Lozano-Juste J, Leon J, ′ Florencio FJ, Reyes JC (2008) Histone H2A.Z and homologues of components of the SWR1 complex are required to control immunity in Arabidopsis. Plant J. 53, 475–487.
Mari S, Gendre D, Pianelli K, Ouerdane L, Lobinski R, Briat JF, Lebrun M, Czernic P (2006) Root-to-shoot long-distance circulation of nicotianamine and nicotianamine-nickel chelates in the metal hyperaccumulator Thlaspi caerulescens. J. Exp. Bot. 57, 4111–4122.
Markesteijn L, Poorter L, Paz H, Sack L, Bongers F (2011) Ecological differentiation in xylem cavitation is associated with stem and leaf structural traits. Plant Cell Environ. 34, 137–148.
Marschner H (1995) Mineral Nutrition of Higher Plants. Academic Press, London.
Martin A, Adam H, Diaz-Mendoza M, Zurczak M, Gonzalez-Schain ND, Suarez-Lopez P (2009) Graft-transmissible induction of potato tuberization by the microRNA miR172. Development 136, 2873– 2881.
Martin AC, del Pozo J, Iglesias J, Rubio V, Solano R, de La Pena A, Leyva A, Paz-Ares J (2000) In?uence of cytokinins on the ex- M pression of phosphate starvation responsive genes in Arabidopsis. Plant J. 24, 559–567.
Mathieu J, Warthmann N, Kuttner F, Schmid M (2007) Export of FT protein from phloem companion cells is suf?cient for ?oral induction in Arabidopsis. Curr. Biol. 17, 1055–1060.
Matsubayashi Y, Sakagami Y (2006) Peptide hormones in plants. Annu Rev. Plant Biol. 57, 649–674.
Matsumoto-Kitano M, Kusumoto T, Tarkowski P, Kinoshita- Tsujimura K, Vaclav′?kova′ K, Miyawaki K, Kakimoto T (2008) ′ Cytokinins are central regulators of cambial activity. Proc. Natl. Acad. Sci. USA 105, 20027–20031.
Matte Risopatron JP, Sun Y, Jones BJ (2010) The vascular cambium: Molecular control of cellular structure. Protoplasma 247, 145–161.
Mattsson J, Ckurshumova W, Berleth T (2003) Auxin signaling in Arabidopsis leaf vascular development. Plant Physiol. 131, 1327– 1339.
Mayr S, Sperry JS (2010) Freeze-thaw induced embolism in Pinus contorta: Centrifuge experiments validate the “thaw-expansion”hypothesis but con?ict with ultrasonic data. New Phytol. 18, 1016–1024.
Mayr S, Zublasing V (2010) Ultrasonic emissions from conifer xylem exposed to repeated freezing. Plant Physiol. 167, 34–40.
Mayzlish-Gati E, De-Cuyper C, Goormachtig S, Beeckman T, Vuyl- steke M, Brewer PB, Beveridge CA, Yermiyahu U, Kaplan Y, Enzer Y, Wininger S, Resnick N, Cohen M, Kapulnik Y, Koltai H (2012) Strigolactones are involved in root response to low phosphate conditions in Arabidopsis. Plant Physiol. 160, 1329– 1341.
McAdam SAM, Brodribb TJ (2012) Stomatal innovation and the rise of seed plants. Ecol. Lett. 15, 1–8.
McCarthy RL, Zhong R, Ye ZH (2009) MYB83 is a direct target of SND1 and acts redundantly with MYB46 in the regulation of sec- ondary cell wall biosynthesis in Arabidopsis. Plant Cell Physiol. 50, 1950–1964.
McConnell JR, Barton MK (1998) Leaf polarity and meristem formation in Arabidopsis. Development 125, 2935–2942.
McConnell JR, Emery J, Eshed Y, Bao N, Bowman J, Barton MK (2001) Role of PHABULOSA and PHAVOLUTA in determining radial patterning in shoots. Nature 411, 709–713.
McNear DH Jr, Chaney RL, Sparks DL (2010) The hyperaccumula- tor Alyssum murale uses complexation with nitrogen and oxygen donor ligands for Ni transport and storage. Phytochemistry 71,188–200.
Meinzer FC, Goldstein G, Jackson P, Holbrook NM, Gutierrez MV, Cavelier J (1995) Environmental and physiological regu- lation of transpiration in tropical forest gap species: The in?u- ence of boundary layer and hydraulic properties. Oecologia 101, 514–522.
Melnyk CW, Molnar A, Baulcombe DC (2011) Intercellular and systemic movement of RNA silencing signals. EMBO J. 30, 3553– 3563.
Mencuccini M, Holtta¨ T (2010) The signi?cance of phloem transport ¨ for the speed with which canopy photosynthesis and belowground respiration are linked. New Phytol. 185, 189–203.
Mercury L, Tardy Y (2001) Negative pressure of stretched liquid water. Geochemistry of soil capillaries. Geochem. Cosmochem. Acta 65, 3391–3408.
Mijovilovich A, Leitenmaier B, Meyer-Klaucke W, Kroneck PMH, Gotz B, Kupper H (2009) Complexation and toxicity of copper in ¨ higher plants. II. Different mechanisms for copper versus cadmium detoxi?cation in the copper-sensitive cadmium/zinc hyperaccumu- lator Thlaspi caerulescens (Ganges ecotype). Plant Physiol. 151, 715–731.
Milburn JA, Kallarackal J (1989) Physiological aspects of phloem translocation. In: Baker DA, Milburn JA, eds. Transport of Photoas- similates. Lonhman Scienti?c & Technical, Essex. pp. 262–305.
Milioni D, Sado PE, Stacey NJ, Roberts K, McCann MC (2002) Early gene expression associated with the commitment and differentiation of a plant tracheary element is revealed by cDNA-ampli?ed fragment length polymorphism analysis. Plant Cell 14, 2813–2824.
Mills RF, Krijgert GC, Baccarini PJ, Hall JL, Williams LE (2003) Functional expression of AtHMA4, a P1B-type ATPase of the Zn/Co/Cd/Pb subclass. Plant J. 35, 164–176.
Mills RF, Francini A, Ferreira Da Rocha PSC, Baccarini PJ, Aylett M, Krijger GC, Williams LE (2005) The plant P1B-type ATPase AtHMA4 transports Zn and Cd and plays a role in detoxi?cation of transition metals supplied at elevated levels. FEBS Lett. 579, 783–791.
Minchin PEH, Thorpe MR (1983) A rate of cooling response in phloem translocation. J. Exp. Bot. 34, 529–536.
Mira H, Mart′?nez-Garc′?a F, Penarrubia L (2001) Evidence for the ? plant-speci?c intercellular transport of the Arabidopsis copper chap- erone CCH. Plant J. 25, 521–528.
Mishina TE, Zeier J (2006) The Arabidopsis ?avin-dependent monooxygenase FMO1 is an essential component of biologically induced systemic acquired resistance. Plant Physiol. 141, 1666– 1675.
Mishler BD, Churchill SP (1984) A cladistic approach to the phylogeny of the “bryophytes.” Brittonia 36, 406–424.
Misra NB, Varshini YP (1961) Viscosity-temperature relation to solu- tions. J. Chem. Eng. Data 6, 194–196.
Mitsuda N, Seki M, Shinozaki K, Ohme-Takagi M (2005) The NAC transcription factors NST1 and NST2 of Arabidopsis regulate sec- ondary wall thickenings and are required for anther dehiscence.Plant Cell 17, 2993–3006.
Mitsuda N, Iwas A, Yamamoto H, Yoshida M, Seki M, Shinozaki K, Ohme-Takagi M (2007) NAC transcription factors, NST1 and NST3, are key regulators of the formation of secondary walls in woody tissues of Arabidopsis. Plant Cell 19, 270–280.
Mittelheuser CJ, Van Steveninck RFM (1969) Stomatal closure and inhibition of transpiration induced by (RS)-abscisic acid. Nature 221, 281–282.
Miwa H, Betsuyaku S, Iwamoto K, Kinoshita A, Fukuda H, Sawa S (2008) The receptor-like kinase SOL2 mediates CLE signaling in Arabidopsis. Plant Cell Physiol. 49, 1752–1757.
Miwa K, Fujiwara T (2010) Boron transport in plants: Co-ordinated regulation of transporters. Ann. Bot. 105, 1103–1108.
Miyashima S, Nakajima K (2011) The root endodermis: A hub of developmental signals and nutrient ?ow. Plant Signal. Behav. 6, 1954–1958.
Miyashima S, Koi S, Hashimoto T, Nakajima K (2011) Non-cell- autonomous microRNA165 acts in a dose-dependent manner to regulate multiple differentiation status in the Arabidopsis root. De- velopment 138, 2303–2313.
Miyashima S, Sebastian J, Lee JY, Helariutta Y (2012) Stem cel function during plant vascular development. EMBO J. 32, 178–193
Miyazawa H, Oka-Kira E, Sato N, Takahashi H, Wu GJ, Sato S, Hayashi M, Betsuyaku S, Nakazono M, Tabata S, Harada K, Sawa S, Fukuda H, Kawaguchi M (2010) The receptor-like kinase KLAVIER mediates systemic regulation of nodulation and non- symbiotic shoot development in Lotus japonicus. Development 137, 4317–4325.
Moeder W, Pozo OD, Navarre DA, Martin GB, Klessig DF (2007) Aconitase plays a role in regulating resistance to oxidative stress and cell death in Arabidopsis and Nicotiana benthamiana. Plant Mol. Biol. 63, 273–287.
Mok DW, Mok MC (2001) Cytokinin metabolism and action. Annu. Rev. Plant Physiol. Plant Mol. Biol. 52, 89–118.
Molders W, Buchala A, Metraux J-P (1996) Transport of salicylic acid in tobacco necrosis virus-infected cucumber plants. Plant Physiol. 112, 787–792.
Molnar A, Melnyk CW, Bassett A, Hardcastle TJ, Dunn R, Baulcombe DC (2010) Small silencing RNAs in plants are mobile and direct epigenetic modi?cation in recipient cells. Science 328, 872–875.
Moreno-Risueno MA, Van Norman JM, Moreno A, Zhang JY, Ahnert SE, Benfey PN (2010) Oscillating gene expression determines competence for periodic Arabidopsis root branching. Science 329, 1306–1311.
Morrissey J, Baxter IR, Lee J, Li L, Lahner B, Grotz N, Kaplan J, Salt DE, Guerinot ML (2009) The ferroportin metal ef?ux proteins function in iron and cobalt homeostasis in Arabidopsis. Plant Cell 21, 3326–3338.
Mosher RA, Durrant WE, Wang D, Song J, Dong X (2006) A com- prehensive structure-function analysis of Arabidopsis SNI1 de?nes essential regions and transcriptional supppressor activity. Plant Cell 18, 1750–1765.
Mosher RA, Schwach F, Studhollme D, Baulcombe DC (2008) PolIVb in?uences RNA-directed DNA-methylation independently of its role in siRNA biogenesis. Proc. Natl. Acad. Sci USA 105, 3145– 3150.
Motose H, Sugiyama M, Fukuda H (2004) A proteoglycan mediates inductive interaction during plant vascular development. Nature 429, 873–878.
Mott KA, Peak D (2011) Alternative perspective on the control of transpiration by radiation. Proc. Natl. Acad. Sci. USA 108, 19820– 19823.
Mou Z, Fan W, Dong X (2003) Inducers of plant systemic acquired resistance regulate NPR1 function through redox changes. Cell 113, 935–944.
Mullendore DL, Windt CW, Van As H, Knoblauch M (2010) Sieve tube geometry in relation to phloem ?ow. Plant Cell 22, 579– 593.
Muller R, Bleckmann A, Simon R (2008) The receptor kinase ¨ CORYNE of Arabidopsis transmits the stem cell-limiting signal CLAVATA3 independently of CLAVATA1. Plant Cell 20, 934–946.
Munch E (1930) Material Flow in Plants. Translated 2003 by Milburn ¨ JA and Kreeb KH, University of Bremen, Germany. Gustav Fischer Verlag, Jena Germany.
Muniz L, Minguet EG, Singh SK, Pesquet E, Vera-Sirera F, Moreau- ? Courtois CL, Carbonell J, Blazquez MA, Tuominen H (2008) ′ ACAULIS5 controls Arabidopsis xylem speci?cation through the prevention of premature cell death. Development 135, 2573– 2582.
Murphy A, Taiz L (1997) Correlation between potassium ef?ux and copper sensitivity in 10 Arabidopsis ecotypes. New Phytol. 136, 211–222.
Nagahashi G, Douds DD (2000) Partial separation of root exudate components and their effects upon the growth of germinated spores of AM fungi. Mycol Res. 104, 1453–1464.
Nagawa S, Sawa S, Sato S, Kato T, Tabata S, Fukuda H (2006) Gene trapping in Arabidopsis reveals genes involved in vascular development. Plant Cell Physiol. 47, 1394–1405.
Naik SN, Goud VV, Rout PK, Dalai AK (2010) Production of ?rst and second generation biofuels: A comprehensive review. Renew. Sust. Energ. Rev. 14, 578–597.
Napoli C (1996) Highly branched phenotype of the petunia dad1-1 mutant is reversed by grafting. Plant Physiol. 111, 27–37.
Nardini A, LoGullo MA, Salleo S (2011a) Re?lling embolized xylem conduits: Is it a matter of phloem unloading? Plant Sci. 180, 604– 611.
Nardini A, Salleo S, Jansen S (2011b) More than just a vulnerable pipeline: Xylem physiology in the light of ion-mediated regulation of plant water transport. J. Exp. Bot. 62, 4701–4718.
Nawrath C, Heck S, Parinthawong N, Metraux JP (2002) EDS5, ′ an essential component of salicylic acid-dependent signaling for disease resistance in Arabidopsis, is a member of the MATE transporter family. Plant Cell 14, 275–286.
Neale DB, Kremer A (2011) Forest tree genomics: Growing resources and applications. Nat. Rev. Genet. 12, 111–122.
Nelson T, Dengler N (1997) Leaf vascular pattern formation. Plant Cell 9, 1121–1135.
Niggeweg R, Thurow C, Weigel R, P?tzner U, Gatz C (2000) Tobacco TGA factors differ with respect to interaction with NPR1, activation potential and DNA-binding properties. Plant Mol. Biol. 42, 775–788.
Nilsson J, Karlberg A, Antti H, Lopez-Vernaza M, Mellerowicz E, Perrot-Rechenmann C, Sandberg G, Bhalerao RP (2008) Dissecting the molecular basis of the regulation of wood formation by auxin in hybrid aspen. Plant Cell 20, 843–855.
Nishiyama R, Kato M, Nagata S, Yanagisawa S, Yoneyama T (2012) Identi?cation of Zn-nicotianamine and Fe-2 -deoxymugineic acid in the phloem sap from rice plants (Oryza sativa L.). Plant Cell Physiol. 53, 381–390.
Notaguchi M, Abe M, Kimura T, Daimon Y, Kobayashi T, Yamaguchi A, Tomita Y, Dohi K, Mori M, Araki T (2008) Long-distance, graft- transmissible action of Arabidopsis FLOWERING LOCUS T protein to promote ?owering. Plant Cell Physiol. 49, 1645–1658.
Notaguchi M, Wolf S, Lucas WJ (2012) Phloem-mobile Aux/IAA transcripts target to the root tip and modify root architecture. J. Integr. Plant Biol. 54, 760–772.
Oda Y, Fukuda H (2012a) How xylem cells design wood cell walls: Secondary cell wall patterning by microtubule-associated proteins. Curr. Opin. Plant Biol. 15, 38–44.
Oda Y, Fukuda H (2012b) Initiation of cell wall pattern by a Rho- and microtubule-driven symmetry breaking. Science 337, 11333–11336.
Oda Y, Hasezawa S (2006) Cytoskeletal organization during xylem cell differentiation. J. Plant Res. 119, 167–177.
Oda Y, Iida Y, Kondo Y, Fukuda H (2010) Wood cell-wall structure requires local 2D-microtubule disassembly by a novel plasma membrane-anchored protein. Curr. Biol. 20, 1197–1202.
Oda Y, Mimura T, Hasezawa S (2005) Regulation of secondary cell wall development by cortical microtubules during tracheary element differentiation in Arabidopsis cell suspensions. Plant Physiol. 137, 1027–1036.
Oertli JJ (1993) The mobility of boron in plants. Plant Soil 155, 301– 304.
Ohashi-Ito K, Fukuda H (2003) HD-zip III homeobox genes that include a novel member, ZeHB-13 (Zinnia)/ATHB-15 (Arabidopsis), are involved in procambium and xylem cell differentiation. Plant Cell Physiol. 44, 1350–1358.
Ohashi-Ito K, Oda Y, Fukuda H (2010) Arabidopsis VASCULAR- RELATED NAC-DOMAIN6 directly regulates the genes that govern programmed cell death and secondary wall formation during xylem differentiation. Plant Cell 22, 3461–3473.
Oka-Kira E, Tateno K, Miura K-I, Haga T, Hayashi M, Harada K, Sato S, Tabata S, Shikazono N, Tanaka A, Watanabe Y, Fukuhara I, Nagata T, Kawaguchi M (2005) klavier (klv), A novel hypernodulation mutant of Lotus japonicus affected in vascular tissue organization and ?oral induction. Plant J. 44, 505–515.
Okamoto S, Ohnishi E, Sato S, Takahashi H, Nakazono M, Tabata S, Kawaguchi M (2009) Nod factor/nitrate-induced CLE genes that drive HAR1-mediated systemic regulation of nodulation. Plant Cell Physiol. 50, 67–77.
Omid A, Keilin T, Glass A, Leshkowitz D, Wolf S (2007) Character- ization of phloem-sap transcription pro?le in melon plants. J. Exp. Bot. 58, 3645–3656.
Oren R, Sperry JS, Katul GG, Pataki DE, Ewers BE, Phillips N, Schafer KVR (1999) Survey and synthesis of intra- and interspeci?c variation in stomatal sensitivity to vapour pressure de?cit. Plant Cell Environ. 22, 1515–1526.
Orlando DA, Brady SM, Fink TM, Benfey PN, Ahnert SE (2010) Detecting separate time scales in genetic expression data. BMC Genomics 11, 381.
Oross JW, Lucas WJ (1985) Sugar-beet petiole structure – vascular anastomoses and phloem ultrastructure. Can. J. Bot. 63, 2295–2304.
Osipova MA, Mortier V, Demchenko KN, Tsyganov VE, Tikhonovich IA, Lutova LA, Dolgikh EA, Goormachtig S (2012) Wuschel-related homeobox5 gene expression and interaction of CLE peptides with components of the systemic control add two pieces to the puzzle of autoregulation of nodulation. Plant Physiol. 158, 1329–1341.
Ouerdane L, Mari S, Czernic P, Lebrun M, ?obinski R (2006)′ Speciation of non-covalent nickel species in plant tissue extracts by electrospray Q-TOFMS/MS after their isolation by 2D size exclusion-hydrophilic interaction LC (SEC-HILIC) monitored by ICP- MS. J. Anal. At. Spec. 21, 676–683.
Palauqui JC, Elmayan T, deBorne FD, Crete P, Charles C, Vaucheret H (1996) Frequencies, timing, and spatial patterns of co- suppression of nitrate reductase and nitrite reductase in transgenic tobacco plants. Plant Physiol. 112, 1447–1456.
Palauqui JC, Elmayan T, Pollien JM, Vaucheret H (1997) Systemic acquired silencing: Transgene-speci?c post-transcriptional silenc- ing is transmitted by grafting from silenced stocks to non-silenced scions. EMBO J. 16, 4738–4745.
Pallas JA, Paiva NL, Lamb C, Dixon RA (1996) Tobacco plants epi- genetically suppressed in phenylalanine ammonia-lyase expression do not develop systemic acquired resistance in response to infection by tobacco mosaic virus. Plant J. 10, 281–293.
Pant BD, Buhtz A, Kehr J, Scheible WR (2008) MicroRNA399 is a long-distance signal for the regulation of plant phosphate home- ostasis. Plant J. 53, 731–738.
Parizot B, Laplaze L, Ricaud L, Boucheron-Dubuisson E, Bayle V, Bonke M, De Smet I, Poethig SR, Helariutta Y, Haseloff J, Chriqui D, Beeckman T, Nussaume L (2008) Diarch symmetry of the vascular bundle in Arabidopsis root encompasses the pericycle and is re?ected in distich lateral root initiation. Plant Physiol. 146, 140–148.
Park M, Li Q, Shcheynikov N, Zeng W, Muallem S (2004) NaBC1 is a ubiquitous electrogenic Na+-coupled borate transporter essential for cellular boron homeostasis and cell growth and proliferation. Mol. Cell 16, 331–341.
Park SW, Kaimoyo E, Kumar D, Mosher S, Klessig D (2007) Methyl salicylate is a critical mobile signal for plant systemic acquired resistance. Science 318, 113–116.
Park SW, Liu PP, Forouhar F, Vlot AC, Tong L, Tietjen K, Klessig D (2009) Use of a synthetic salicylic acid analog to investigate the roles of methyl salicylate and its esterases in plant disease resistance. J. Biol. Chem. 284, 7307–7317.
Parker J, Holub E, Frost L, Falk A, Gunn N, Daniels M (1996) Characterization of eds1, a mutation in Arabidopsis suppressing resistance to Peronospora parasitica speci?ed by several different RPP genes. Plant Cell 8, 2033–2046.
Passioura JB, Ashford AE (1974) Rapid translocation in the phloem of wheat roots. Aust. J. Plant Physiol. 1, 521–527.
Peguero-Pina JS, Alquezar-Alquezar JM, Mayr S, Cochard H, Gil- Pelegrin D (2011) Embolism induced by winter drought in Pinus sylvestris L.: A possible reason for dieback near its southern distribution limit? Ann. For. Sci. 38, 565–574.
Peleg-Grossman S, Golani Y, Kaye Y, Melamed-Book N, Levine A (2009) NPR1 protein regulates pathogenic and symbiotic inter- actions between Rhizobium and legumes and non-legumes. PLoS ONE 4, e8399.
Perez-Alfocea F, Ghanem ME, Gomez-Cadenas A, Dodd IC (2011) ′ ′ Omics of root-to-shoot signaling under salt stress and water de?cit. OMIC 15, 893–901.
Pesacreta TC, Groom LH, Rials TG (2005) Atomic force microscopy of the intervessel pit membrane in the stem of Sapium sebiferum (Euphorbiaceae). IAWA J. 26, 397–426.
Pesquet E, Ranocha P, Legay S, Digonnet C, Barbier O, Pichon M, Goffner D (2005) Novel markers of xylogenesis in zinnia are differentially regulated by auxin and cytokinin. Plant Physiol. 139, 1821–1839.
Pesquet E, Korolev AV, Calder G, Lloyd CW (2010) The microtubule- associated protein AtMAP70–5 regulates secondary wall patterning in Arabidopsis wood cells. Curr. Biol. 20, 744–749.
Petra′sek J, Mravec J, Bouchard R, Blakeslee JJ, Abas M, Seifer- ˇ tova D, Wisniewska J, Tadele Z, Kubes M, Covanova M, Dhonukshe P, Skupa P, Benkova E, Perry L, Krecek P, Lee OR, Fink GR, Geisler M, Murphy AS, Luschnig C, Zazimalova E, Friml J (2006) PIN proteins perform a rate-limiting function in cellular auxin ef?ux. Science 312, 914–918.
Petra′sek J, Friml J (2009) Auxin transport routes in plant development. ˇ Development 136, 2675–2688.
Petty JA (1972) The aspiration of bordered pits in conifer wood. Proc. R. Soc. Ser. B. Biol. Sci. 181, 395–406.
Petty JA, Preston RD (1969) The dimensions and number of pit membrane pores in conifer wood. Proc. R. Soc. Ser. B. Biol. Sci. 172, 137–151.
Peuke AD, Windt C, van As H (2006) Effects of cold girdling on ?ows in the transport phloem in Ricinus communis: Is mass ?ow inhibited? Plant Cell Environ. 29, 15–25.
Pich A, Scholz G (1996) Translocation of copper and other mi- cronutrients in tomato plants (Lycopersicon esculentum Mill.): Nicotianamine-stimulated copper transport in the xylem. J. Exp. Bot. 47, 41–47.
Pich A, Scholz G, Stephan U (1994) Iron-dependent changes of heavy-metals, nicotianamine, and citrate in different plant or- gans and in the xylem exudate of 2 tomato genotypes. Nico- tianamine as possible copper translocator. Plant Soil 165, 189– 196.
Pickard WF (1981) The ascent of sap in plants. Progr. Biophys. Mol. Biol. 37, 181–229.
Pieruschka R, Huber G, Berry JA (2010) Control of transpiration by radiation. Proc. Natl. Acad. Sci. USA 107, 13372–13377.
Piquemal J, LaPierre C, Myton K, O’Connel A, Schuch W, Grima- Pettenati J, Boudet AM (1998) Down-regulation of cinnamoyl-CoA reductase induces signi?cant changes of lignin pro?les in transgenic tobacco plants. Plant J. 13, 71–83.
Pires ND, Dolan L (2012) Morphological evolution in land plants: New designs with old genes. Phil Trans. R. Soc. 367, 508–518.
Pittermann J (2010) The evolution of water transport in plants: An integrated approach. Goebiology 8, 112–139.
Pittermann J, Sperry JS (2003) Tracheid diameter is the key trait determining extent of freezing-induced cavitation in conifers. Tree Physiol. 23, 907–914.
Pittermann J, Sperry JS (2006) Analysis of freeze-thaw embolism in conifers: The interaction between cavitation pressure and tracheid size. Plant Physiol. 140, 374–382.
Pittermann J, Sperry JS, Hacke UG, Wheeler JK, Sikkema EH (2005) Torus-margo pits help conifers compete with angiosperms. Science310, 1924.
Pittermann J, Sperry JS, Hacke UG, Wheeler JK, Sikkema EH (2006a) Inter-tracheid pitting and the hydraulic ef?ciency of conifer wood: The role of tracheid allometry and cavitation protection. Am. J. Bot. 93, 1105–1113.
Pittermann J, Sperry JS, Wheeler JK, Hacke UG, Sikkema EH (2006b) Mechanical reinforcement of tracheids compromises the hydraulic ef?ciency of conifer xylem. Plant Cell Environ. 29, 1618– 1628.
Plaut JA, Yepez EA, Hill J, Pangle R, Sperry JS, Pockman WT, McDowell NG (2012) Hydraulic limits preceeding mortality in a pinon-juniper woodland under experimental drought. Plant Cell Environ. 35, 1601–1617.
Pockman WT, Sperry JS (1997) Freezing-induced xylem cavitation and the northern limit of Larrea tridentata. Oecologia 109, 19–27.
Poirier Y, Thoma S, Somerville C, Schiefelbein J (1991) Mutant of Arabidopsis de?cient in xylem loading of phosphate. Plant Physiol. 97, 1087–1093.
Pommerrenig B, Papini-Terzi FS, Sauer N (2007) Differential regu- lation of sorbitol and sucrose loading into the phloem of Plantago major in response to salt stress. Plant Physiol. 144, 1029–1038.
Pressel S, Ligrone R, Duckett JG (2006) Effects of de- and rehydration on food-conducting cells in the moss Polytrichum formosum: A cytological study. Ann. Bot. 98, 67–76.
Prigge MJ, Clark SE (2006) Evolution of the Class III HDd-ZIP gene family in land plants. Evol. Dev. 8, 350–361.
Prigge MJ, Otsuga D, Alonso JM, Ecker JR, Drews GN, Clark SE (2005) Class III homeodomain-leucine zipper gene family members have overlapping, antagonistic, and distinct roles in Arabidopsis development. Plant Cell 17, 61–76.
Pritchard J (1996) Aphid stylectomy reveals an osmotic step between sieve tube, cortical cells in barley roots. J. Exp. Bot. 47, 1519– 1524.
Pritchard J, Tomos AD, Farrar JF, Minchin PEH, Gould N, Paul MJ, MacRae EA, Ferrier RA, Gray DW, Thorpe MR (2004) Turgor, solute import, growth in maize roots treated with galactose. Funct. Plant Biol. 31, 1095–1103.
Puig S, Penarrubia L (2009) Placing metal micronutrients in context: Transport and distribution in plants. Curr. Op. Plant Biol. 12, 299– 306.
Pyo H, Demura T, Fukuda H (2007) TERE; a novel cis-element respon- sible for a coordinated expression of genes related to programmed cell death and secondary wall formation during differentiation of tracheary elements. Plant J. 51, 955–965.
Rahayu YS, Walch-Liu P, Neumann G, Romheld V, von Wiren N, ¨ Bangerth F (2005) Root-derived cytokinins as long-distance signals for NO?-induced stimulation of leaf growth. J. Exp. Bot. 56, 1143– 3 1152.
Ransom-Hodgkins WD, Vaughn MW, Bush DR (2003) Protein phos- phorylation plays a key role in sucrose-mediated transcriptional regulation of a phloem-speci?c proton-sucrose symporter. Planta 217, 483–489.
Raridan GJ, Delaney TP (2002) Role of salicylic acid and NIM1/NPR1 in race-speci?c resistance in Arabidopsis. Genetics 161, 803–811.
Raven JA (1991) Long-term functioning of enucleate sieve elements - possible mechanisms of damage avoidance and damage repair. Plant Cell Environ. 14, 139–146.
Raven JA (2003) Long-distance transport in non-vascular plants. Plant Cell Environ. 26, 73–85.
Reid DE, Ferguson BJ, Gresshoff PM (2011) Inoculation- and nitrate- induced CLE peptides of soybean control NARK-dependent nodule formation. Mol. Plant-Microbe Interact. 24, 606–618.
Reinhardt D, Mandel T, Kuhlemeier C (2000) Auxin regulates the initiation and radial position of plant lateral organs. Plant Cell 12, 507–518.
Reinhardt D, Pesce ER, Stieger P, Mandel T, Baltensperger K, Bennett M, Traas J, Friml J, Kuhlemeier C (2003) Regulation of phyllotaxis by polar auxin transport. Nature 426, 255–260.
Rellan-Alvarez R, Abad′?a J, Alvarez-Fernandez A (2008) Formation ′ ′ ′ ′ of metal-nicotianamine complexes as affected by pH, ligand ex- change with citrate and metal exchange. A study by electrospray ionization time-of-?ight mass spectrometry. Rapid Commun. Mass Sp. 22, 1553–1562.
Rellan-Alvarez R, Giner-Mart′?nez-Sierra J, Orduna J, Orera I, ′ ′ Rodr′?guez-Castrillon JA, Garc′?a-Alonso JI, Abad′?a J, Alvarez- ′ ′ Fernandez A (2010) Identi?cation of a tri-iron(III), tri-citrate complex ′ in the xylem sap of iron-de?cient tomato resupplied with iron: New insights into plant iron long-distance transport. Plant Cell Physiol. 51, 91–102.
Rennie EA, Turgeon R (2009) A comprehensive picture of phloem loading strategies. Proc. Natl. Acad. Sci. USA 106, 14162–14167.
Riesen O, Feller U (2005) Redistribution of nickel, cobalt, manganese, zinc, and cadmium via the phloem in young and maturing wheat. J. Plant Nutr. 28, 421–430.
Roberts MR, Paul ND (2006) Seduced by the dark side: Integrating molecular and ecological perspectives on the in?uence of light on plant defense against pests and pathogens. New Phytol. 170, 677– 699.
Robischon M, Du J, Miura E, Groover A (2011) The Populus Class III HD ZIP, popREVOLUTA, in?uences cambium initia- tion and patterning of woody stems. Plant Physiol. 155, 1214– 1225.
Rodriguez-Medina C, Atkins CA, Mann AJ, Jordan ME, Smith PMC (2011) Macromolecular composition of phloem exudate from white lupin (Lupinus albus L.). BMC Plant Biol. 11, 36.
Rogers EE, Ausubel FM (1997) Arabidopsis enhanced disease sus- ceptibility mutants exhibit enhanced susceptibility to several bacte- rial pathogens and alterations in PR-1 gene expression. Plant Cell 9, 305–316.
Roney JK, Khatibi PA, Westwood JH (2007) Cross-species translo- cation of mRNA from host plants into the parasitic plant dodder. Plant Physiol. 143, 1037–1043.
Rosche E, Blackmore D, Tegeder M, Richardson T, Schroeder H, Higgins TJV, Frommer WB, Of?er CE, Patrick JW (2002)Seed-speci?c expression of a potato sucrose transporter increasessucrose uptake, growth rates of developing pea cotyledons. PlantJ. 30, 165–175.
Roschzttardtz H, Seguela-Arnaud M, Briat J, Vert G, Curie C (2011) ′ ′ The FRD3 citrate ef?uxer promotes iron nutrition between symplas- tically disconnected tissues throughout Arabidopsis development. Plant Cell 23, 2725–2737.
Rothwell GW, Lev-Yadun S (2005) Evidence of polar auxin ?ow in 375 million-year-old fossil wood. Am. J. Bot. 92, 903–906.
Rouached H, Stefanovic A, Secco D, Bulak Arpat A, Gout E, Bligny R, Poirier Y (2011) Uncoupling phosphate de?ciency from its major effects on growth and transcriptome via PHO1 expression in Arabidopsis. Plant J. 65, 557–570.
Rueffer M, Steipe B, Zenk MH (1995) Evidence against speci?c binding of salicylic acid to plant catalase. FEBS Lett. 377, 175–180.
Ruffel S, Krouk G, Ristova D, Shasha D, Birnbaum KD, Coruzzi GM (2011) Nitrogen economics of root foraging: Transitive closure of the nitrate-cytokinin relay and distinct systemic signaling for N supply vs. demand. Proc. Natl. Acad. Sci. USA 108, 18524–18529.
Ruiz-Medrano R, Xoconostle-Cazares B, Lucas WJ (1999) Phloem ′ long-distance transport of CmNACP mRNA: Implications for supra- cellular regulation in plants. Development 126, 4405–4419.
Ruszala EM, Beerling DJ, Franks PJ, Chater C, Casson SA, Gray JE, Hetherington AM (2011) Land plants acquired active stomatal control early in their evolutionary history. Curr. Biol. 21, 1030–1035.
Ruyter-Spira C, Al-Babili S, van der Krol S, Bouwmeester H (2012) The biology of strigolactones. Trends Plant Sci. 12, 1360–1385.
Ryals J, Weymann K, Lawton K, Friedrich L, Ellis D, Steiner H- Y, Johnson J, Delaney TP, Jesse T, Vos P, Uknes S (1997) The Arabidopsis NIM1 protein shows homology to the mammalian transcription factor inhibitor IκB. Plant Cell 9, 425–439.
Sachs T (1981) The control of patterned differentiation of vascular tissues. Adv. Bot. Res. 9, 152–262.
Sachs T (1991) Pattern Formation in Plants. Cambridge University Press, Cambridge UK.
Salim E, Ullsten O (1999) Our forests our future. Report of the World Commission on Forests and Sustainable Development, Cambridge University Press, Cambridge UK.
Salleo S, Lo Gullo MA, De Paoli D, Zippo M (1996) Xylem recovery from cavitation-induced embolism in young plants of Laurus nobilis: A possible mechanism. New Phytol. 132, 47–56.
Salleo S, Tri?lo P, Esposito S, Nardini A, LoGullo MA (2009) Starch- to-sugar conversion in wood parenchyma of ?eld-growing Laurus nobilis plants: A component of the signal pathway for embolism repair? Funct. Plant Biol. 36, 815–825.
Salleo S, Tri?lo P, LoGullo MA (2006) Phloem as a possible major determinant of rapid cavitation reversal in Laurus nobilis (laurel). Funct. Plant Biol. 33, 1063–1074.
Salt DE, Prince RC, Baker AJM, Raskin I, Pickering IJ (1999) Zinc ligands in the metal hyperaccumulator Thlaspi caerulescens as determined using x-ray absorption spectroscopy. Environ. Sci. Technol. 33, 713–717.
Sannigrahi P, Ragauskas AJ, Tuskan GA (2010) Poplar as a feed- stock for biofuels: A review of compositional characteristics. Biofuels Bioprod. Bioref. 4, 209–226.
Sasaki T, Chino M, Hayashi H, Fujiwara T (1998) Detection of several mRNA species in rice phloem sap. Plant Cell Physiol. 39, 895–897.
Sawa S, Ito T, Shimura Y, Okada K (1999) Filamentous ?ower controls the formation and development of Arabidopsis in?orescences and ?oral meristems. Plant Cell 11, 69–86.
Sawchuck T, Head P, Donner TJ, Scarpella E (2007) Time-lapse imaging of Arabidopsis leaf development shows dynamic patterns of procambium formation. New Phytol. 176, 560–571.
Sawchuk MG, Donner TJ, Scarpella E (2008) Auxin transport- dependent, stage-speci?c dynamics of leaf vein formation. Plant Signal. Behav. 3, 286–289.
Scarpella E, Barkoulas M, Tsiantis M (2010) Control of leaf and vein development by auxin. Cold Spring Harb. Perspect. Biol. 2, a001511.
Scarpella E, Francis P, Berleth T (2004) Stage-speci?c markers de?ne early steps of procambium development in Arabidopsis leaves and correlate termination of vein formation with mesophyll differentiation. Development 131, 3445–3455.
Scarpella E, Helariutta Y (2010) Vascular pattern formation in plants. Curr. Op. Dev. Biol. 91, 221–265.
Scarpella E, Marcos D, Friml JA, Berleth T (2006) Control of leaf ? vascular patterning by polar auxin transport. Genes Dev. 20, 1015– 1027.
Scarpella E, Meijer AH (2004) Pattern formation in the vascular system of monocot and dicot plant species. New Phytol. 164, 209–242.
Schaaf G, Schikora A, Haberle J, Vert G, Ludewig U, Briat J, Curie C, von Wiren N (2005) A putative function for the Arabidopsis ′ Fe-phytosiderophore transporter homolog AtYSL2 in Fe and Zn homeostasis. Plant Cell Physiol. 46, 762–774.
Schachtman DP, Goodger JQD (2008) Chemical root to shoot signal- ing under drought. Trends Plant Sci. 6, 281–287.
Schaumloffel D, Ouerdane L, Bouyssiere B, ?obinski R (2003) ¨ ′ Speciation analysis of nickel in the latex of a hyperaccumulating tree Sebertia acuminata by HPLC and CZE with ICP MS and electrospray MS-MS detection. J. Anal. At. Spect. 18, 120–127.
Schenk PM, Kazan K, Wilson I, Anderson JP, Richmond T, Somerville SC, Manners JM (2000) Coordinated plant defense responses in Arabidopsis revealed by microarray analysis. Proc. Natl. Acad. Sci. USA 97, 11655–11660.
Scheres B (2010) Developmental biology: Roots respond to an inner calling. Nature 465, 299–300.
Scheres B, Di Laurenzio L, Willemsen V, Hauser MT, Janmaat K, Weisbeek P, Benfey PN (1995) Mutations affecting the radial organisation of the Arabidopsis root display speci?c defects through- out the embryonic axis. Development 121, 53–62.
Schlereth A, Moller B, Liu W, Kientz M, Flipse J, Rademacher EH, Schmid M, Jurgens G, Weijers D (2010) MONOPTEROS controls embryonic root initiation by regulating a mobile transcription factor. Nature 464, 913–916.
Schlesinger WH (1997) Biogeochemistry. Academic Press, San Diego.
Schrader J, Baba K, May ST, Palme K, Bennett M, Bhalerao RP, Sandberg G (2003) Polar auxin transport in the wood-forming tissues of hybrid aspen is under simultaneous control of develop- mental and environmental signals. Proc. Natl. Acad. Sci. USA 100, 10096–10101.
Schreiber SG, Hacke UG, Hamann A, Thomas BR (2011) Genetic variation of hydraulic and wood anatomical traits in hybrid poplar and trembling aspen. New Phytol. 190, 150–160.
Schuetz M, Berleth T, Mattsson J (2008) Multiple MONOPTEROS- dependent pathways are involved in leaf initiation. Plant Physiol. 148, 870–880.
Schuler M, Lehmann M, Fink-Straube C, Bauer P (2010) The interaction of NAS genes and FRD3 in the long-distance transport of iron in Arabidopsis thaliana. 15th International Symposium on Iron Nutrition and Interactions in Plants. Budapest, Hungary.
Schulz A (1992) Living sieve cells of conifers as visualized by confocal, laser-scanning ?uorescence microscopy. Protoplasma 166, 153– 164.
Searle IR, Men AE, Laniya TS, Buzas DM, Iturbe-Ormaetxe I, Carroll BJ, Gresshoff PM (2003) Long-distance signaling in nodulation directed by a CLAVATA1-like receptor kinase. Science 299, 109– 112.
Secchi F, Zwieniecki MA (2010) Patterns of PIP gene expression in Populus trichocarpa during recovery from xylem embolism suggest a major role for the PIP1 aquaporin subfamily as moderators of the re?lling process. Plant Cell Environ. 33, 1285–1297.
Sevanto S, Holbrook NM, Ball MC (2012) Freeze/thaw-induced em- bolism: Probability of critical bubble formation depends on speed of ice formation. Plant Sci. 3, 1–12.
Shah J, Tsui F, Klessig DF (1997) Characterization of a salicylic acid-insensitive mutant (sai1) of Arabidopsis thaliana identi?ed in a selective screen utilizing the SA-inducible expression of the tms2 gene. Mol. Plant-Microbe Interact. 10, 69–78.
Shah J, Kachroo P, Nandi A, Klessig D (2001) A recessive mutation in the Arabidopsis ssi2 gene confers SA- and NPR1-independent expression of PR genes and resistance against bacterial and oomycete pathogens. Plant J. 25, 563–574. S
Shalit A, Rozman A, Goldshmidt A, Alvarez JP, Bowman JL, Eshed Y, Lifschitz E (2009) The ?owering hormone ?origen functions as a general systemic regulator of growth and termination. Proc. Natl. Acad. Sci. USA 106, 8392–8397.
Shapiro AD, Zhang C (2001) The role of NDR1 in avirulence gene- directed signaling and control of programmed cell death in Ara- bidopsis. Plant Physiol. 127, 1089–1101.
Sharp RG, Davies WJ (2009) Variability among species in the apoplas- tic pH signalling response to drying soils. J. Exp. Bot. 60, 4363– 4370.
Shulaev V, Leon J, Raskin I (1995) Is salicylic-acid a translocated signal of systemic acquired-resistance in tobacco. Plant Cell 7, 1691–1701.
Shulaev V, Silverman P, Raskin I (1997) Airborne signaling by methyl salicylate in plant pathogen resistance. Nature 385, 718–721.
Sieburth LE (1999) Auxin is required for leaf vein pattern in Arabidop- sis. Plant Physiol. 121, 1179–1190.
Sieburth LE, Lee DK (2010) BYPASS1: How a tiny mutant tells a big story about root-to-shoot signaling. J. Integr. Plant Biol. 52, 77–85.
Sinclair SA, Sherson SM, Jarvis R, Camakaris J, Cobbett CS (2007) The use of the zinc-?uorophore, Zinpyr-1, in the study of zinchomeostasis in Arabidopsis roots. New Phytol. 174, 39–45.
Slaymaker DH, Navarre DA, Clark D, Pozo OD, Martin GB, Klessig DF (2002) The tobacco salicylic acid-binding protein 3 (SABP3) is the chloroplast carbonic anhydrase, which exhibits antioxidant activity and plays a role in the hypersensitive defense response. Proc. Natl. Acad. Sci. USA 99, 11640–11645.
Smith AM, Stitt M (2007) Coordination of carbon supply and plant growth. Plant Cell Environ. 30, 1126–1149.
Smith JAC, Milburn JA (1980a) Osmoregulation, the control of phloem-sap composition in Ricinus communis. Planta 148, 28–34.
Smith JAC, Milburn JA. (1980b) Phloem turgor, the regulation of sucrose loading in Ricinus communis. Planta 148, 42–48.
Snow R (1935) Activation of cambial growth by pure hormones. New Phytol. 34, 347–360.
Song JT, Koo YJ, Seo HK, Kim MC, CHoi YD, Kim JH (2008) Overexpression of AtSGT1, an Arabidopsis salicylic acid gluco- syltransferase, leads to increased susceptibility to Pseudomonas syringae. Phytochemistry 69, 1128–1134.
Song JT, Lu H, Greenberg JT (2004b) Divergent roles in Arabidopsis thaliana development and defense of two homologous genes, aber- rant growth and death 2 and AGD2-LIKE DEFENSE RESPONSE PROTEIN 1, encoding novel aminotransferases. Plant Cell 16, 353– 366.
Song JT, Lu H, McDowell JM, Greenberg JT (2004a) A key role for ALD1 in activation of local and systemic defenses in Arabidopsis. Plant J. 40, 200–212.
Soyano T, Thitamadee S, Machida Y, Chua NH (2008) ASYMMETRIC LEAVES2-LIKE19/LATERAL ORGAN BOUNDARIES DOMAIN30 and ASL20/LBD18 regulate tracheary element differentiation in Arabidopsis. Plant Cell 20, 3359–3373.
Sperotto RA, Boff T, Duarte GL, Santos LS, Grusak MA, Fett JP (2010) Identi?cation of putative target genes to manipulate Fe and Zn concentrations in rice grains. J. Plant Physiol. 167, 1500– 1506.
Sperotto RA, Ricachenevsky FK, Waldow VA, Fett JP (2012) Iron bioforti?cation in rice: It’s a long way to the top. Plant Sci. 190, 24–39.
Sperry JS (1993) Winter xylem embolism and spring recovery in Betula cordifolia, Fagus grandifolia, Abies balsamea, and Picea rubens. In: Borghetti M, Grace J, Raschi A, eds. Water Transport in Plants under Climatic Stress. Cambridge University Press, Cambridge. pp. 86–98.
Sperry JS (2000) Hydraulic constraints on plant gas exchange. Ag. For. Meteorol. 2831, 1–11.
Sperry JS (2003) Evolution of water transport and xylem structure. Int. J. Plant Sci. 164, S115–S127.
Sperry JS (2011) Hydraulics of vascular water transport In: P. W, ed. Mechanical integration of plant cells and plants. Springer-Verlag Berlin. pp. 303–327.
Sperry JS, Christman MA, Smith DD (2012) Vulnerability curves by centrifugation: Is there an open vessel artifact, and are “r” shapedcurves necessarily invalid? Plant Cell Environ. 35, 601–610.
Sperry JS, Hacke UG, Oren R, Comstock JP (2002) Water de?cits and hydraulic limits to leaf water supply. Plant Cell Environ. 25, 251–263.
Sperry JS, Holbrook NM, Zimmermann MH, Tyree MT (1987) Spring ?lling of xylem vessels in wild grapevine. Plant Physiol. 83, 414–417.
Sperry JS, Tyree MT (1988) Mechanism of water stress-induced xylem embolism. Plant Physiol. 88, 581–587.
Sperry JS, Tyree MT (1990) Water-stress-induced xylem embolism in three species of conifers. Plant Cell Environ. 13, 427–436.
Spicer R, Groover A (2010) The evolution of development of the vascular cambium and secondary growth. New Phytol. 186, 577– 592.
Spoel SH, Dong X (2008) Making sense of hormone cross talk during plant immune response. Cell Host Microbe 3, 348–351.
Spoel SH, Dong X (2012) How do plants achieve immunity? De- fence without specialized immune cell. Nat. Rev. Immunol. 12, 89–100.
Spoel SH, Mou Z, Tada Y, Spivey NW, Genshik P, Dong X (2009) Proteasome-mediated turnover of the transcription coacti- vator NPR1 plays dual roles in regulating plant immunity. Cell 137, 860–872.
Stacey MG, Patel A, McClain WE, Mathieu M, Remley M, Rogers EE, Gassmann W, Blevins DG, Stacey G (2008) The Arabidopsis AtOPT3 protein functions in metal homeostasis and movement of iron to developing seeds. Plant Physiol. 146, 589–601.
Stadler R, Wright KM, Lauterbach C, Amon G, Gahrtz M, Feuerstein A, Oparka KJ, Sauer N (2005) Expression of GFP-fusions in Arabidopsis companion cells reveals non-speci?c protein traf?cking into sieve elements, identi?es a novel post-phloem domain in roots. Plant J. 41, 319–331.
Staehelin C, Xie ZP, Illana A, Vierheilig H (2011) Long-distance transport of signals during symbiosis: Are nodule formation and mycorrhization autoregulated in a similar way? Plant Signal. Behav. 6, 372–377.
Stefanovic A, Ribot C, Rouached H, Wang Y, Chong J, Belbahri L, Delessert S, Poirier Y (2007) Members of the PHO1 gene family show limited functional redundancy in phosphate transfer to the shoot, and are regulated by phosphate de?ciency via distinct pathways. Plant J. 50, 982–994.
Stiller V, La?tte HR, Sperry JS (2005) Embolized conduits of rice (Oryza sativa L.) re?ll despite negative xylem pressure. Am. J. Bot. 92, 1970–1974.
Stiller V, Sperry JS (2002) Cavitation fatigue and its reversal in intact sun?ower plants. J. Exp. Bot. 53, 1155–1161.
Strawn MA, Marr SK, Inoue K, Inada N, Zubieta C, Wildermuth MC (2007) Arabidopsis isochorismate synthase functional in pathogen- induced salicylate biosynthesis exhibits properties consistent with a role in diverse stress responses. J. Biol. Chem. 282, 5919– 5933.
Street N, Jansson S, Hvidsten T (2011) A systems biology model of the regulatory network in populus leaves reveals interacting regulators and conserved regulation. BMC Plant Biol. 11, 13.
Suer S, Agusti J, Sanchez P, Schwarz M, Greb T (2011) WOX4 imparts auxin responsiveness to cambium cells in Arabidopsis. Plant Cell 23, 3247–3259.
Sussex IM (1954) Experiments on the cause of dorsiventrality in leaves. Nature 167, 651–652.
Svistoonoff S, Creff A, Reymond M, Sigoillot-Claude C, Ricaud L, Blanchet A, Nussaume L, Desnos T (2007) Root tip contact with low-phosphate media reprograms plant root architecture. Nat. Genet. 39, 792–796.
Sweetlove LJ, Kossmann J, Riesmeier JW, Riesmeier JW, Trethewey RN, Hill SA (1998) The control of source to sink carbon ?ux during tuber development in potato. Plant J. 15, 697–706.
Tada Y, Spoel SH, Pajerowska-Muhktar K, Mou Z, Song J, Wang C, Zuo J, Dong, X (2008) Plant immunity requires conformational changes of NPR1 via S-nitrosylation and thoredoxins. Science 321, 952–956.
Takahashi H, Miller J, Nozaki Y, Takeda M, Shah J, Hase S, Ikegami M, Ehara Y, Dinesh-Kumar SP (2002) RCY1, an Ara- bidopsis thaliana RPP8/HRT family resistance gene, conferring resistance to cucumber mosaic virus requires salicylic acid, ethylene and a novel signal transduction mechanism. Plant J. 32, 655– 667.
Takahashi M, Terada Y, Nakai I, Nakanishi H, Yoshimura E, Mori S, Nishizawa N (2003) Role of nicotianamine in the intracellular delivery of metals and plant reproductive development. Plant Cell 15, 1263–1280.
Takano J, Miwa K, Fujiwara T (2008) Boron transport mechanisms: Collaboration of channels and transporters. Trends Plant Sci. 13, 451–457.
Takano J, Noguchi K, Yasumori M, Kobayashi M, Gajdos Z, Miwa K, Hayashi H, Yoneyama T, Fujiwara T (2002) Arabidopsis boron transporter for xylem loading. Nature 420, 337–340.
Takano J, Yamagami M, Noguchi K, Hayashi H, Fujiwara T (2001) Preferential translocation of boron to young leaves in Arabidopsis thaliana regulated by the BOR1 gene. Soil Sci. Plant Nutr. 47, 345– 357.
Takei K, Takahashi T, Sugiyama T, Yamaya T, Sakakibara H (2002) Multiple routes communicating nitrogen availability from roots to shoots: A signal transduction pathway mediated by cytokinin. J. Exp. Bot. 53, 971–977.
Talke IN, Hanikenne M, Kramer U (2006) Zinc-dependent global ¨ transcriptional control, transcriptional deregulation, and higher gene copy number for genes in metal homeostasis of the hyperaccumu- lator Arabidopsis halleri. Plant Physiol. 142, 148–167.
Tamaki S, Matsuo S, Wong HL, Yokoi S, Shimamoto K (2007) Hd3a protein is a mobile ?owering signal in rice. Science 316, 1033–1036.
Tan Q, Zhang L, Grant J, Cooper P, Tegeder M (2010) Altered phloem transport of S-methylmethionine affects plant metabolism, seed number in pea plants. Plant Physiol. 154, 1886–1896.
Tanaka M, Wallace IS, Takano J, Roberts DM, Fujiwara T (2008) NIP6;1 is a boric acid channel for preferential transport of boron to growing shoot tissues in Arabidopsis. Plant Cell 20, 2860–2875.
Taoka KI, Ham BK, Xoconostle-Cazares B, Rojas MR, Lucas WJ ′ (2007) Reciprocal phosphorylation and glycosylation recognition motifs control NCAPPl interaction with pumpkin phloem proteins and their cell-to-cell movement. Plant Cell 19, 1866–1884.
Teo G, Suzuki Y, Uratsu SL, Lamoinen B, Ormonde N, Hu WK, DeJong TM, Dandekar AM (2006) Silencing leaf sorbitol synthesis alters long-distance partitioning and apple fruit quality. Proc. Natl.Acad. Sci. USA 103, 18842–18847.
Thibaud MC, Arrighi JF, Bayle V, Chiarenza S, Creff A, Bustos R, Paz-Ares J, Poirier Y, Nussaume L (2010) Dissection of local and systemic transcriptional responses to phosphate starvation in Arabidopsis. Plant J. 64, 775–789.
Thomas RJ (1972) Bordered pit aspiration in angiosperms. Wood Fiber 3, 236–237.
Thompson AJ, Mulholland BJ, Jackson AC, McKee JM, Hilton HW, Symonds RC, Sonneveld T, Burbidge A, Stevenson P, Taylor IB (2007) Regulation and manipulation of ABA biosynthesis in roots. Plant Cell Environ. 1, 67–78.
Thompson MV (2006) Phloem: The long, the short of it. Trends Plant Sci. 11, 26–32.
Thompson MV, Wolniak SM (2008) A plasma membrane-anchored ?uorescent protein fusion illuminates sieve element plasma mem- branes in Arabidopsis, tobacco. Plant Physiol. 146, 1599–1610.
To JP, Deruere J, Maxwell BB, Morris VF, Hutchison CE, Ferreira ` FJ, Schaller GE, Kieber JJ (2007) Cytokinin regulates type-A Arabidopsis Response Regulator activity and protein stability via two-component phosphorelay. Plant Cell 19, 3901–3914.
To JP, Haberer G, Ferreira FJ, Deruere J, Mason MG, Schaller ` GE, Alonso JM, Ecker JR, Kieber JJ (2004) Type-A Arabidopsis response regulators are partially redundant negative regulators of cytokinin signaling. Plant Cell 16, 658–671.
Tomatsu H, Takano J, Takahashi H, Watanabe-Takahashi A, Shiba- gaki N, Fujiwara T (2007) An Arabidopsis thaliana high-af?nity molybdate transporter required for ef?cient uptake of molybdate from soil. Proc. Natl. Acad. Sci USA 104, 18807–18812.
Trampczynska A, Kupper H, Meyer-Klaucke W, Schmidt H, ¨ Clemens S (2010) Nicotianamine forms complexes with Zn(ii) in vivo. Metallomics 2, 57–66.
Truernit E, Bauby H, Dubreucq B, Grandjean O, Runions J, Barthelemy J, Palauqui JC (2008) High-resolution whole-mount imaging of three-dimensional tissue organization and gene expres- sion enables the study of phloem development and structure in Arabidopsis. Plant Cell 20, 1494–1503.
Truernit E, Bauby H, Belcram K, Barthelemy J, Palauqui JC (2012) OCTOPUS, a polarly localised membrane-associated protein, reg- ulates phloem differentiation entry in Arabidopsis thaliana. Devel- opment 139, 1306–1315.
Truman W, Bennett MH, Turnbull CGN, Grant MR (2010) Arabidopsis auxin mutants are compromised in systemic acquired resistance and exhibit aberrant accumulation of various indolic compounds. Plant Physiol. 152, 1562–1573.
Truman W, Bennett MH, Kubigsteltig I, Turnbull C, Grant M (2007) Arabidopsis systemic immunity uses conserved defense signaling pathways and is mediated by jasmonates. Proc. Natl. Acad. Sci. USA 104, 1075–1080.
Tsukamoto T, Nakanishi H, Uchida H, Watanabe S, Matsuhashi S, Mori S, Nishizawa NK (2009) 52Fe translocation in barley as monitored by a positron-emitting tracer imaging system (PETIS): Evidence for the direct translocation of Fe from roots to young leaves via phloem. Plant Cell Physiol. 50, 48–57.
Tudela D, Primo-Millo E (1992) 1-Aminocyclopropane-1-carboxylic acid transported from roots to shoots promotes leaf abscission in cleopatra mandarin (Citrus reshni Hort. ex Tan.) seedlings rehy- drated after water stress. Plant Physiol. 100, 131–137.
Tuominen H, Puech L, Fink S, Sundberg B (1997) A radial concen- tration gradient of indole-3-acetic acid is related to secondary xylem development in hybrid aspen. Plant Physiol. 115, 577–585.
Turgeon R (2010a) The role of phloem loading reconsidered. Plant Physiol. 152, 1817–1823.
Turgeon R (2010b) The puzzle of phloem pressure. Plant Physiol. 154, 578–581.
Turgeon R, Wolfe S (2009) Phloem transport: Cellular pathways, molecular traf?cking. Annu. Rev. Plant Biol. 60, 207–221.
Turnbull CGN, Booker JP, Leyser HMO (2002) Micrografting tech- niques for testing long-distance signalling in Arabidopsis. Plant J. 32, 255–262.
Turner S, Gallois P, Brown D (2007) Tracheary element differentia- tion. Annu. Rev. Plant Biol. 58, 407–433.
Tuskan GA, Difazio S, Jansson S, Bohlmann J, Grigoriev I, Hellsten U, Putnam N, Ralph S, Rombauts S, Salamov A, Schein J, Sterck L, Aerts A, Bhalerao RR, Bhalerao RP, Blaudez D, Boerjan W, Brun A, Brunner A, Busov V, Campbell M, Carlson J, Chalot M, Chapman J, Chen GL, Cooper D, Coutinho PM, Couturier J, Covert S, Cronk Q, Cunningham R, Davis J, Degroeve S, Dejardin A, Depamphilis C, Detter J, Dirks B, Dubchak ′ I, Duplessis S, Ehlting J, Ellis B, Gendler K, Goodstein D, Gribskov M, Grimwood J, Groover A, Gunter L, Hamberger B, Heinze B, Helariutta Y, Henrissat B, Holligan D, Holt R, Huang W, Islam-Faridi N, Jones S, Jones-Rhoades M, Jorgensen R, Joshi C, Kangasjarvi J, Karlsson J, Kelleher C, Kirkpatrick ¨ R, Kirst M, Kohler A, Kalluri U, Larimer F, Leebens-Mack J, Leple′ JC, Locascio P, Lou Y, Lucas S, Martin F, Montanini B, Napoli C, Nelson DR, Nelson C, Nieminen K, Nilsson O, Pereda V, Peter G, Philippe R, Pilate G, Poliakov A, Razumovskaya J, Richardson P, Rinaldi C, Ritland K, Rouze′ P, Ryaboy D,
Schmutz J, Schrader J, Segerman B, Shin H, Siddiqui A, SterkyF, Terry A, Tsai CJ, Uberbacher E, Unneberg P, Vahala J, Wall K,Wessler S, Yang G, Yin T,Douglas C, Marra M, Sandberg G, Vande Peer Y, Rokhsar D (2006) The genome of black cottonwood,Populus trichocarpa (Torr. & Gray). Science 313, 1596–1604.
Twumasi P, Iakimova ET, Qian T, van Ieperen W, Schel JH, Emons AM, van Kooten O, Woltering EJ (2010) Caspase inhibitors affect the kinetics and dimensions of tracheary elements in xy- logenic Zinnia (Zinnia elegans) cell cultures. BMC Plant Biol. 10, 162.
Tyree MT, Sperry JS (1988) Do woody plants operate near the point of catastrophic xylem dysfunction caused by dynamic water stress? Answers from a model. Plant Physiol. 88, 574–580.
Tyree MT, Sperry JS (1989) Vulnerability of xylem to cavitation and embolism. Annu. Rev. Plant Physiol. Plant Mol. Biol. 40, 19–38.
Tyree MT, Zimmermann MH (2002) Xylem Structure and the Ascent of Sap. Springer, Berlin.
Uggla C, Moritz T, Sandberg G, Sundberg B (1996) Auxin as a positional signal in pattern formation in plants. Proc. Natl. Acad. Sci. USA 93, 9282–9286.
Umehara M, Hanada A, Yoshida S, Akiyama K, Arite T, Takeda- Kamiya N, Magome H, Kamiya Y, Shirasu K, Yoneyama K, Kyozuka J, Yamaguchi S (2008) Inhibition of shoot branching by V new terpenoid plant hormones. Nature 455, 195–200.
Umehara M, Hanada A, Magome H, Takeda-Kamiya N, Yamaguchi S (2010) Contribution of strigolactones to the inhibition of tiller bud outgrowth under phosphate de?ciency in rice. Plant Cell Physiol. 51, 1118–1126.
Vacchina V, Mari S, Czernic P, Marques L, Pianelli K, Schaumloffel ` ¨ D, Lebrun M, ?obinski R (2003) Speciation of nickel in a hy-peraccumulating plant by high-performance liquid chromatography- inductively coupled plasma mass spectrometry and electrospray MS/MS assisted by cloning using yeast complementation. Anal. Chem. 75, 2740–2745.
van Bel AJE (2003) The phloem, a miracle of ingenuity. Plant Cell Environ. 26, 125–149.
van Bel AJE, Hafke JB (2005) Physicochemical determinants of phloem transport. In: Holbrook NM, Zwieniecki M, eds. Vascular Transport in Plants. Elsevier, Amsterdam. pp. 19–44.
van de Mortel JE, Villanueva LA, Schat H, Kwekkeboom J, Cough- lan S, Moerland PD, van Themaat EVL, Koornneef M, Aarts MGM (2006) Large expression differences in genes for iron and zinc homeostasis, stress response, and lignin biosynthesis distinguish roots of Arabidopsis thaliana and the related metal hyperaccumula- tor Thlaspi caerulescens. Plant Physiol. 142, 1127–1147.
van der Biezen EA, Freddie CT, Kahn K, Parker JE, Jones JDG (2002) Arabidopsis RPP4 is a member of the RPP5 multi- gene family of TIR-NB-LRR genes and confers downy mildew resistance through multiple signalling components. Plant J. 29, 439– 451.
Van Doorn W, Beers E, Dangl J, Franklin-Tong V, Gallois P, Hara- Nishimura I, Jones A, Kawai-Yamada M, Lam E, Mundy J(2011a) Morphological classi?cation of plant cell deaths. Cell DeathDiffer. 18, 1241–1246.
Van Doorn WG, Hiemstra T, Fanourakis D (2011b) Hydrogel regu- lation of xylem ?ow: An alternative hypothesis. Plant Physiol. 157, 1642–1649.
Van Goor BJ, Wiersma D (1976) Chemical forms of manganese and zinc in phloem exudate. Physiol. Plant. 36, 213–216.
Van Hoof NALM, Hassinen VH, Hakvoort HWJ, Ballintijn KF, Schat H, Verkleij JAC, Ernst WHO, Karenlampi SO, Tervahauta AI (2001) Enhanced copper tolerance in Silene vulgaris (Moench) Garcke populations from copper mines is associated with increased transcript levels of a 2b-type metallothionein gene. Plant Physiol. 126, 1519–1526.
Van Iepeeren W (2007) Ion-mediated changes of xylem hydraulic conductivity in planta: Fact or ?ction? Trends Plant Sci. 12, 137– 142.
Van Iepeeren W, Van Gelder A (2006) Ion-mediated ?ow changes suppressed by minimal calcium presence in Chrysanthemum and Prunus laurocerasus. J. Exp. Bot. 57, 2743–2750.
Van Norman JM, Frederick RL, Sieburth LE (2004) BYPASS1 nega- tively regulates a root-derived signal that controls plant architecture. Curr. Biol. 14, 1739–1746.
Van Norman JM, Sieburth LE (2007) Dissecting the biosynthetic pathway for the bypass1 root-derived signal. Plant J. 49, 619–628.
Van Wees SCM, De Swart EAM, Van Pelt JA, Van Loon LC, Pieterse CMJ (2000) Enhancement of induced disease resistance by simultaneous activation of salicylate- and jasmonate-dependent defense pathways in Arabidopsis thaliana. Proc. Natl. Acad. Sci. USA 97, 8711–8716.
Vanneste S, Coppens F, Lee E, Donner TJ, Xie Z, Van Isterdael G, Dhondt S, De Winter F, De Rybel B, Vuylsteke M, De Veylder L, Friml J, Inze D, Grotewold E, Scarpella E, Sack F, Beemster GT, Beeckman T (2011) Developmental regulation of CYCA2s contributes to tissue-speci?c proliferation in Arabidopsis. EMBO J. 30, 3430–3441.
Vaten A, Dettmer J, Wu S, Stierhof YD, Miyashima S, Yadav SR, ′ Roberts CJ, Campilho A, Bulone V, Lichtenberger R, Lehes- ranta S, Mahonen AP, Kim JY, Jokitalo E, Sauer N, Scheres B, ¨ ¨ Nakajima K, Carlsbecker A, Gallagher KL, Helariutta Y (2011) Callose biosynthesis regulates symplastic traf?cking during root development. Dev. Cell 21, 1144–1155.
Venugopal SC, Jeong RD, Zhu S, Chandra-Shekara AC, Navarre D, Kachroo A, Kachroo P (2009) ENHANCED DISEASE SUSCEP- TIBILITY 1 and salicylic acid act redundantly to regulate resistance gene expression and low oleate-induced defense signaling. PLoS Genetics 5, e1000545.
Vera-Sirera F, Minguet EG, Singh SK, Ljung K, Tuominen HCL, Blazquez MA, Carbonell J (2010) Role of polyamines in plant vascular development. Plant Physiol. Biochem. 48, 534–539.
Verbruggen N, Hermans C, Schat H (2009) Molecular mechanisms of metal hyperaccumulation in plants. New Phytol. 181, 759– 776.
Vercammen D, van de Cotte B, De Jaeger G, Eeckhout D, Casteels P, Vandepoele K, Vandenberghe I, Van Beeumen J, Inze′ D, Van Breusegem F (2004) Type II metacaspases Atmc4 and Atmc9 of Arabidopsis thaliana cleave substrates after arginine and lysine. J. Biol. Chem. 279, 45329–45336.
Verma DP, Hong Z (2001) Plant callose synthase complexes. Plant Mol. Biol. 47, 693–701.
Vernooij B, Friedrich L, Morse A, Reist R, Kolditz-Jawhar R, Ward E, Uknes S, Kessmann H, Ryals J (1994) Salicylic acid is not the translocated signal responsible for inducing systemic acquired resistance but is required in signal transduction. Plant Cell 6, 959– 965.
Verret F, Gravot A, Auroy P, Leonhardt N, David P, Nussaume L, Vavasseur A, Richaud P (2004) Overexpression of AtHMA4 enhances root-to-shoot translocation of zinc and cadmium and plant metal tolerance. FEBS Lett. 576, 306–312.
Verret F, Gravot A, Auroy P, Preveral S, Forestier C, Vavasseur A, Richaud P (2005) Heavy metal transport by AtHMA4 involves the N-terminal degenerated metal binding domain and the C-terminal His11 stretch. FEBS Lett. 579, 1515–1522.
Vierheilig H, Lerat S, Piche′ Y (2003) Systemic inhibition of arbuscular mycorrhiza development by root exudates of cucumber plants colonized by Glomus mosseae. Mycorrhiza 13, 167–170.
Vlot AC, Klessig DF, Park S-W (2008) Systemic acquired resistance: The elusive signal(s). Curr. Op. Plant Biol. 11, 436–442.
Voesenek LACJ, Jackson MB, Toebes AHW, Huibers W, Vriezen WH, Colmer TD (2003) De-submergence-induced ethylene pro- duction in Rumex palustris: Regulation and ecophysiological signif- icance. Plant J. 33, 341–352.
Voinnet O (2009) Origin, biogenesis, and activity of plant microRNAs. Cell 136, 669–687.
Voitsekhovskaja OV, Koroleva OA, Batashev DR, Knop C, Tomos AD, Gamalei YV, Heldt HW, Lohaus G (2006) Phloem loading in two Scrophulariaceae species. What can drive symplastic ?ow via plasmodesmata? Plant Physiol. 140, 383–395.
von Wiren N, Klair S, Bansal S, Briat J, Khodr H, Shioiri T, Leigh ′ R, Hider R (1999) Nicotianamine chelates both Fe-III and Fe-II. Implications for metal transport in plants. Plant Physiol. 119, 1107– 1114.
Walley JW, Rowe HC, Xiao Y, Chehab EW, Kliebenstein DJ, Wagne D, Dehesh K (2008) The chromatin remodeler SPLAYED regulate speci?c stress signaling pathways. PLoS Pathol. 4, e1000237.
Walter A, Silk WK, Schurr (2009) Environmental effects on spatial and temporal patterns of leaf and root growth. Annu. Rev. Plant Biol. 60, 279–304.
Walz C, Juenger M, Schad M, Kehr J (2002) Evidence for the presence and activity of a complete antioxidant defence system in mature sieve tubes. Plant J. 31, 189–197.
Wang D, Amornsiripanitch N, Dong X (2006) A genomic approach to identify regulatory nodes in the transcriptional network of systemic acquired resistance in plants. PLoS Pathog. 2, e123.
Wang S, Durrant WE, Song J, Spivey NW, Dong X (2010) ArabidopsisBRCA2 and RAD51 proteins are speci?cally involved in defensegene transcription during plant immune responses. Proc. Natl. Acad.Sci. USA 107, 22716–22721.
Ward ER, Uknes SJ, Williams SC, Dincher SS, Wiederhold DL, Alexander DC, Ahl-Goy P, Metraux JP, Ryals JA (1991) Coor- dinate gene activity in response to agents that induce systemic acquired resistance. Plant Cell 3, 1085–1094.
Wardlaw IF (1974) Temperature control of translocation. In: Bieleski RL, Fergupon R, Cresswell MM, eds. Mechanisms and Regulation of Plant Growth. Bull. Royal Soc., New Zealand. pp. 533–387.
Wardlaw IF (1990) The control of carbon partitioning in plants. New Phytol. 116, 341–381.
Wardlaw IF, Bagnall D (1981) Phloem transport and the regulation of growth of Sorghum bicolor (Moench) at low temperature. Plant Physiol. 68, 411–414.
Wardlaw IF, Moncur L (1976) Source, sink and control of translocation in wheat. Planta 128, 93–100.
Warmbrodt RD (1987) Solute concentrations in the phloem and apex of the root of Zea mays. Am. J. Bot. 74, 394–402.
Waters BM, Chu H, DiDonato R, Roberts L, Eisley R, Lahner B, Salt D, Walker E (2006) Mutations in Arabidopsis yellow stripe-like1 and yellow stripe-like3 reveal their roles in metal ion homeostasis and loading of metal ions in seeds. Plant Physiol. 141, 1446–1458.
Waters BM, Sankaran RP (2011) Moving micronutrients from the soil to the seeds: Genes and physiological processes from a bioforti?cation perspective. Plant Sci. 180, 562–574.
Waters BM, Uauy C, Dubcovsky J, Grusak MA (2009) Wheat (Triticum aestivum) NAM proteins regulate the translocation of iron, zinc, and nitrogen compounds from vegetative tissues to grain. J. Exp. Bot. 60, 4263–4274.
Weichert N, Saalbach I, Weichert H, Kohl S, Erban A, Kopka J, Hause B, Varshney A, Sreenivasulu N, Strickert M, Kumlehn J, Weschke W, Weber H (2010) Increasing sucrose uptake capacity of wheat grains stimulates storage protein synthesis. Plant Physiol. 152, 698–710.
Weigel D, Jurgens G (2002) Stem cells that make stems. Nature 415, ¨ 751–754.
Weir IE, Maddumage R, Allan AC, Ferguson IB (2005) Flow cytomet- ric analysis of tracheary element differentiation in Zinnia elegans cells. Cytometry A. 68, 81–91.
Wenzel CL, Schuetz M, Yu Q, Mattsson J (2007) Dynamics of MONOPTEROS and PIN-FORMED1 expression during leaf vein pattern formation in Arabidopsis thaliana. Plant J. 49, 387–398.
Werner T, Schmulling T (2009) Cytokinin action in plant development. ¨ Curr. Opin. Plant Biol. 12, 527–538.
West AG, Hultine KR, Sperry JS, Bush SE, Ehleringer JR (2008) Transpiration and hydraulic strategies in a pinyon-juniper woodland. Ecol. Appl. 18, 911–927.
Wheeler JK, Sperry JS, Hacke UG, Hoang N (2005) Inter-vessel pitting and cavitation in woody Rosaceae and other vesselled plants: A basis for a safety vs. ef?ciency trade-off in xylem transport. Plant Cell Environ. 28, 800–812.
White MC, Decker AM, Chaney RL (1981) Metal complexation in xylem ?uid: I. Chemical composition of tomato and soybean stem exudate. Plant Physiol. 67, 292–300.
Wiersma D, Van Goor BJ (1979) Chemical forms of nickel and cobalt in phloem of Riccinus communis. Physiol. Plant. 45, 440–451.
Wildermuth MC, Dewdney J, Wu G, Ausubel FM (2001) Isocho- rismate synthase is required to synthesize salicylic acid for plant defense. Nature 414, 562–571.
Williams LE, Mills RF (2005) P1B-ATPases – An ancient family of transition metal pumps with diverse functions in plants. Trends Plant Sci. 10, 491–502.
Williams LE, Pittman JK (2010) Dissecting pathways involved in manganese homeostasis and stress in higher plant cells. Plant CellMonographs 17, 95–117.
Windt CW, Vergeldt FJ, de Jager PA, van As H (2006) MRI of long- distance water transport: A comparison of the phloem and xylem ?ow characteristics and dynamics in poplar, castor bean, tomato and tobacco. Plant Cell Environ. 29, 1715–1729.
Woffenden BJ, Freeman TB, Beers EP (1998) Proteasome inhibitors prevent tracheary element differentiation in zinnia mesophyll cell cultures. Plant Physiol. 118, 419–430.
Wong CKE, Cobbett CS (2009) HMA P-type ATPases are the ma- jor mechanism for root-to-shoot Cd translocation in Arabidopsis thaliana. New Phytol. 181, 71–78.
Wu Y, Zhang D, Chu JY, Boyle P, Wang Y, Brindle ID, De Luca V, Despres C (2012) The Arabidopsis NPR1 protein is a receptor ′ for the plant defense hormone salicylic acid. Cell Rep. 28, 639– 647.
Wycisk K, Kim EJ, Schroeder JI, Kramer U (2004) Enhancing the ¨ ?rst enzymatic step in the histidine biosynthesis pathway increases the free histidine pool and nickel tolerance in Arabidopsis thaliana FEBS Lett. 578, 128–134.
Xia Y, Gao QM, Yu K, Lapchyk L, Navarre D, Hildebrand D, Kachroo A, Kachroo P (2009) An intact cuticle in distal tissues is essential for the induction of systemic acquired resistance in plants. Cell HostMicrobe 5, 151–165.
Xia Y, Yu K, Navarre D, Seebold K, Kachroo A, Kachroo, P (2010) The glabra1 mutation affects cuticle formation and plant responses to microbes. Plant Physiol. 154, 833–846.
Xie B, Wang X, Zhu M, Zhang Z, Hong Z (2011) CalS7 encodes a callose synthase responsible for callose deposition in the phloem. Plant J. 65, 1–14.
Xoconostle-Cazares B, Xiang Y, Ruiz-Medrano R, Wang HL, ′ Monzer J, Yoo BC, McFarland KC, Franceschi VR, Lucas WJ (1999) Plant paralog to viral movement protein that potentiates transport of mRNA into the phloem. Science 283, 94–98.
Yaginuma H, Hirakawa Y, Kondo Y, Ohashi-Ito K, Fukuda H (2011) A novel function of TDIF-related peptides: Promotion of axillary bud formation. Plant Cell Physiol. 52, 1354–1364.
Yamaguchi M, Kubo M, Fukuda H, Demura T (2008) Vascular-related NAC-DOMAIN7 is involved in the differentiation of all types of xylem vessels in Arabidopsis roots and shoots. Plant J. 55, 652–664.
Yamaguchi M, Mitsuda N, Ohtani M, Ohme-Takagi M, Demura T (2011) VASCULAR-RELATED NAC-DOMAIN7 directly regulates the expression of a broad range of genes for xylem vessel formation. Plant J. 66, 579–590.
Yamaguchi M, Ohtani M, Mitsuda N, Kubo M, Ohme-Takagi M, Fukuda H, Demura T (2010) VND-INTERACTING2, a NAC domain transcription factor, negatively regulates xylem vessel formation in Arabidopsis. Plant Cell 22, 1249–1263.
Yamamoto R, Demura T, Fukuda H (1997) Brassinosteroids induce entry into the ?nal stage of tracheary element differentiation in cultured zinnia cells. Plant Cell Physiol. 38, 980–983.
Yang SJ, Zhang YJ, Sun M, Goldstein G, Cao KF (2012) Recovery of diurnal depression of leaf hydraulic conductance in a subtrop- ical woody bamboo species: Embolism re?lling by nocturnal root pressure. Tree Physiol. 32, 414–422.
Yoder JI, Gunathilake P, Wu B, Tomilova N, Tomilov AA (2009) Engineering host resistance against parasitic weeds with RNA interference. Pest Manag. Sci. 65, 460–466.
Yokosho K, Yamaji N, Ma J (2010) Isolation and characterisation of two MATE genes in rye. Funct. Plant Biol. 37, 296–303.
Yokosho K, Yamaji N, Ueno D, Mitani N, Ma J-F (2009) OSFRDL1 is a citrate transporter required for ef?cient translocation of iron in rice. Plant Physiol. 149, 297–305.
Yoo BC, Kragler F, Varkonyi-Gasic E, Haywood V, Archer-Evans S, Lee YM, Lough TJ, Lucas WJ (2004) A systemic small RNA signaling system in plants. Plant Cell 16, 1979–2000.
Yoshida S, Iwamoto K, Demura T, Fukuda H (2009) Comprehensive analysis of the regulatory roles of auxin in early transdifferentiation into xylem cells. Plant Mol. Biol. 70, 457–469.
Yoshimoto K, Noutoshi Y, Hayashi K, Shirasu K, Takahashi T, Motose H (2012) A chemical biology approach reveals an opposite action between thermospermine and auxin in xylem development in Arabidopsis thaliana. Plant Cell Physiol. 53, 635–645.
Yu M, Hu CX, Wang YH (2002) Molybdenum ef?ciency in winter wheat cultivars as related to molybdenum uptake and distribution. Plant Soil 245, 287–293.
Zeevaart JAD (1976) Physiology of ?ower formation. Annu. Rev. Plant Physiol. 27, 321–348.
Zeevaart JAD (2006) Florigen coming of age after 70 years. Plant Cell18, 1783–1789.
Zhang LY, Peng YB, Pelleschi-Travier S, Fan Y, Lu YF, Lu YM, Gao XP, Shen YY, Delrot S, Zhang DP (2004) Evidence for apoplasmic phloem unloading in developing apple fruit. Plant Physiol. 135, 1– 13.
Zhang WH, Zhou Y, Dibley KE, Tyerman SD, Furbank RT, Patrick JW (2007) Nutrient loading of developing seeds. Funct. Plant Biol. 34, 314–331.
Zhang XY, Wang XL, Wang XF, Xia GH, Pan QH, Fan RC, Wu FQ, Yu XC, Zhang DP (2006) A shift of phloem unloading from symplasmic to apoplasmic pathway is involved in developmen- tal onset of ripening in grape berry. Plant Physiol. 142, 220– 232.
Zhang Y, Cheng YT, Qu N, Zhao Q, Bi D, Li X (2006) Negative reg ulation of defense response in Arabidopsis by two NPR1 paralogs Plant J. 48, 647–656.
Zhang Y, Fan W, Kinkema M, Li X, Dong X (1999) Interaction of NPR1 with basic leucine zipper protein transcription factors that bind sequences required for salicylic acid induction of the PR-1 gene. Proc. Natl. Acad. Sci. USA 96, 6523–6528.
Zhang Y, Tessaro MJ, Lassner M, Li X (2003) Knockout analysis of Arabidopsis transcription factors TGA2, TGA5, and TGA6 reveals their redundant and essential roles in systemic acquired resistance. Plant Cell 15, 2647–2653.
Zhao C, Johnson BJ, Kositsup B, Beers EP (2000) Exploiting secondary growth in Arabidopsis. Construction of xylem and bark cDNA libraries and cloning of three xylem endopeptidases. Plant Physiol. 123, 1185–1196.
Zheng Q, Durben DJ, Wolf GH, Angell CA (1991) Liquids at large negative pressures: Water at the homogeneous nucleation limit. Science 254, 829–832.
Zhong R, Demura T, Ye ZH (2006) SND1, a NAC domain transcription factor, is a key regulator of secondary wall synthesis in ?bers of Arabidopsis. Plant Cell 18, 3158–3170.
Zhong R, Lee C, Ye ZH (2010) Global analysis of direct targets of secondary wall NAC master switches in Arabidopsis. Mol. Plant 3, 1087–1103.
Zhong R, Lee C, Zhou J, McCarthy RL, Ye ZH (2008) A battery of transcription factors involved in the regulation of secondary cell wall biosynthesis in Arabidopsis. Plant Cell 20, 2763–2782.
Zhong R, Richardson EA, Ye ZH (2007) The MYB46 transcription factor is a direct target of SND1 and regulates secondary wall biosynthesis in Arabidopsis. Plant Cell 19, 2776–2792.
Zhong R, Ye ZH (2007) Regulation of cell wall biosynthesis. Curr. Opin. Plant Biol. 10, 564–572.
Zhong R, Ye ZH (1999) I?1, a gene regulating interfascicular ?ber differentiation in Arabidopsis, encodes a homeodomain-leucine zipper protein. Plant Cell 11, 2139–2152.
Zhong R, Ye ZH (2001) Alteration of auxin polar transport in th Arabidopsis i?1 mutants. Plant Physiol. 126, 549–563.
Zhou J, Lee C, Zhong R, Ye ZH (2009) MYB58 and MYB63 ar transcriptional activators of the lignin biosynthetic pathway durinsecondary cell wall formation in Arabidopsis. Plant Cell 21, 248–266.
Zhou JM, Trifa Y, Silva H, Pontier D, Lam E, Shah J, Klessig DF (2000) NPR1 differentially interacts with members of the TGA/OBF family of transcription factors that bind an element of the PR-1 gene required for induction by salicylic acid. Mol. Plant-Microbe Interact. 13, 191–202.
Zhou N, Tootle TL, Tsui F, Klessig DF, Glazebrook J (1998) PAD4 functions upstream from salicylic acid to control defense responses in Arabidopsis. Plant Cell 10, 1021–1030.
Zhou Y, Setz N, Niemietz C, Qu H, Of?er CE, Tyerman SD, Patrick JW (2007) Aquaporins and unloading of phloem-imported water in coats of developing bean seeds. Plant Cell Environ. 30, 1566– 1577.
Zhu S, Jeong RD, Venugopal SC, Lapchyk L, Navarre D, Kachroo A, Kachroo P (2011) SAG101 forms a ternary complex with EDS1 and is required for resistance signaling against turnip crinkle virus. PLoS Pathog. 7, e1002318.
Zimmermann U, Schneider H, Wegner L, Haase A (2004) Water ascent in tall trees: Does evolution of land plants rely on a highly metastable state? New Phytol. 162, 575– 615.
Zwieniecki MA, Holbrook NM (2000) Bordered pit structure and vessel wall surface properties. Implications for embolism repair. Plant Physiol. 123, 1015–1020.
Zwieniecki MA, Holbrook NM (2009) Confronting Maxwell’s demon: Biophysics of xylem embolism repair. Trends Plant Sci. 14, 530– 534.
Zwieniecki MA, Melcher PJ, Feild TS, Holbrook NM (2004) A poten- tial role for xylem-phloem interactions in the hydraulic architecture of trees: Effects of phloem girdling on xylem hydraulic conductance. Tree Physiol. 24, 911–917.
Zwieniecki MA, Melcher PJ, Holbrook NM (2001a) Hydraulic proper- ties of individual xylem vessels of Fraxinus americana. J. Exp. Bot. 52, 257–264.
Zwieniecki MA, Melcher PJ, Holbrook NM (2001b) Hydrogel con- trol of xylem hydraulic resistance in plants. Science 291, 1059– 1062.
Agrawal B, Lakshmanan V, Kaushik S, Bais HP (2012) Natural variation among Arabidopsis accessions reveals malic acid as a key mediator of Nickel (Ni) tolerance. Planta 236, 477– 489.
Aki T, Shigyo M, Nakano R, Yoneyama T, Yanagisawa S (2008) Nano scale proteomics revealed the presence of regulatory proteins including three FT-Like proteins in phloem and xylem saps from rice. Plant Cell Physiol. 49, 767–790.
Akiyama K, Matsuzaki K, Hayashi H (2005) Plant sesquiterpenes induce hyphal branching in arbuscular mycorrhizal fungi. Nature 435, 824–827.
Alakonya A, Kumar R, Koenig D, Kimura S, Townsley B, Runo S, Garces HM, Kang J, Yanez A, David-Schwartz R, Machuka J, Sinha N (2012) Interspeci?c RNA interference of SHOOT MERISTEMLESS-Like disrupts Cuscuta pentagona plant para- sitism. Plant Cell 4, 3153–3166.
Alder NN, Pockman WT, Sperry JS, Nuismer S (1997) Use of centrifugal force in the study of xylem cavitation. J. Exp. Bot. 48, 665–674.
Aloni R (1987) Differentiation of vascular tissues. Plant Physiol. 38, 179–204.
Aloni R, Schwalm K, Langhans M, Ullrich CI (2003) Gradual shifts in sites of free-auxin production during leaf-primordium development and their role in vascular differentiation and leaf morphogenesis in Arabidopsis. Planta 216, 841–853.
Alves S, Nabais C, Simoes Gonc?alves MDL, Correia dos Santos MM ? (2011) Nickel speciation in the xylem sap of the hyperaccumulator Alyssum serpyllifolium ssp. lusitanicum growing on serpentine soils of northeast Portugal. Plant Physiol. 168, 1715–1722.
Aly R, Cholakh H, Joel DM, Leibman D, Steinitz B, Zelcer A, Naglis A, Yarden O, Gal-On A (2009) Gene silencing of mannose 6- phosphate reductase in the parasitic weed Orobanche aegyptiaca through the production of homologous dsRNA sequences in the host plant. Plant Biotechnol. J. 7, 487–498.
Amiard V, Mueh K, Demming-Adams B, Ebbert V, Turgeon R (2005) Anatomical and photosynthetic acclimation to the light environment in species with differing mechanisms of phloem loading. Proc. Natl. Acad. Sci. USA 102, 12968–12973.
Anderegg WRL, Berry JA, Smith DD, Sperry JS, Anderegg LDL, Field CB (2012) The roles of hydraulic and carbon stress in a widespread climate-induced forest die-off. Proc. Am. Acad. Arts Sci. 109, 233–237.
Andres-Colas N, Sancenon V, Rodr′?guez-Navarro S, Mayo S, Thiele DJ, Ecker JR, Puig S, Penarrubia L (2006) The Arabidopsis ? heavy metal P-type ATPase HMA5 interacts with metallochaper-ones and functions in copper detoxi?cation of roots. Plant J. 45, 225–236.
Aoki K, Suzui N, Fujimaki S, Dohmae N, Yonekura-Sakakibara K, Fujiwara T, Hayashi H, Yamaya T, Sakakibara H (2005) Destination-selective long-distance movement of phloem proteins. Plant Cell 17, 1801–1814.
Aoyama T, Kobayashi T, Takahashi M, Nagasaka S, Usuda K, Kakei Y, Ishimaru Y, Nakanishi H, Mori S, Nishizawa NK (2009) OsYSL18 is a rice iron(III)-deoxymugineic acid transporter speci?- cally expressed in reproductive organs and phloem of lamina joints. Plant Mol. Biol. 70, 681–692.
Atkins CA, Smith PMC, Rodriguez-Medina C (2011) Macromolecules in phloem exudates – A review. Protoplasma 248, 165–172.
Avci U, Petzold HE, Ismail IO, Beers EP, Haigler CH (2008) Cysteine proteases XCP1 and XCP2 aid micro-autolysis within the intact central vacuole during xylogenesis in Arabidopsis roots. Plant J. 56, 303–315.
Bai SL, Kasai A, Yamada K, Li TZ, Harada T (2011) A mobile signal transported over a long distance induces systemic tran- scriptional gene silencing in a grafted partner. J. Exp. Bot. 62, 4561–4570.
Baima S, Nobili F, Sessa G, Lucchetti S, Ruberti I, Morelli G (1995) The expression of the athb-8 homeobox gene is restricted to provascular cells in Arabidopsis thaliana. Development 121, 4171– 4182.
Bahrun A, Jensen CR, Asch F, Mogensen VO (2002) Drought- induced changes in xylem pH, ionic composition, and ABA con- centration act as early signals in ?eld-grown maize (Zea mays L.). J. Exp. Bot. 53, 251–263.
Ball MC, Canny MJ, Huang CX, Egerton JJG, Wolfe J (2006) Freeze/thaw-induced embolism depends on nadir temperature: The heterogeneous hydration hypothesis. Plant Cell Environ. 29, 729– 745.
Banerjee AK, Chatterjee M, Yu YY, Suh SG, Miller WA, Hannapel DJ (2006) Dynamics of a mobile RNA of potato involved in a long- distance signaling pathway. Plant Cell 18, 3443–3457.
Barnes A, Bale J, Constantinidou C, Ashton P, Jones A, Pritchard J (2004) Determining protein identity from sieve element sap in Ricinus communis L. by quadrupole time of ?ight (Q-TOF) mass spectrometry. J. Exp. Bot. 55, 1473–1481.
Barnett JR (1982) Plasmodesmata and pit development in secondary xylem elements. Planta. 155, 251–260.
Batailler B, Lemaitre T, Vilaine F, Sanchez C, Renard D, Cayla T, Beneteau J, Dinant S (2012) Soluble and ?lamentous proteins in Arabidopsis sieve elements. Plant Cell Environ. 35, 1258–1273.
Bauby H, Divol F, Truernit E, Grandjean O, Palauqui JC (2007) Pro- tophloem differentiation in early Arabidopsis thaliana development. Plant Cell Physiol. 48, 97–109.
Baxter I, Muthukumar B, Hyeong CP, Buchner P, Lahner B, Danku J, Zhao K, Lee J, Hawkesford MJ, Guerinot ML, Salt DE (2008) Variation in molybdenum content across broadly distributed pop- ulations of Arabidopsis thaliana is controlled by a mitochondrial molybdenum transporter (MOT1). PLoS Genetics 4, e1000004.
Behmer ST, Grebenok RJ, Douglas AE (2011) Plant sterols and host plant suitability for a phloem-feeding insect. Funct. Ecol. 25, 484– 491.
Belimov AA, Dodd IC, Hontzeas N, Theobald JC, Safronova VI, Davies WJ (2009) Rhizosphere bacteria containing 1-aminocyclopropane-1-carboxylate deaminase increase yield of plants grown in drying soil via both local and systemic hormone signalling. New Phytol. 181, 413–423.
Belles JM, Garro R, Fayos J, Navarro P, Primo J, Conejero V (1999) ′ Gentisic acid as a pathogen-inducible signal, additional to salicylic acid for activation of plant defenses in tomato. Mol. Plant-Microbe Interact. 12, 227–235.
Benschop JJ, Mohammed S, O’Flaherty M, Heck AJR, Sli- jper M, Menke FLH (2007) Quantitative phosphoproteomics of early elicitor signaling in Arabidopsis. Molec. Cell. Proteomics 6, 1198–1214.
Benkova E, Michniewicz M, Sauer M, Teichmann T, Seifertova D, Jurgens G, Friml J (2003) Local, ef?ux-dependent auxin gradients as a common module for plant organ formation. Cell 115, 591–602.
Benning UF, Tamot B, Guelette BS, Hoffmann-Benning S (2012) New aspects of phloem-mediated long-distance lipid signaling in plants. Front. Plant Sci. 3, 53.
Berleth T, Mattsson J, Hardtke CS (2000) Vascular continuity and auxin signals. Trends Plant Sci. 5, 387–393.
Betsuyaku S, Takahashi F, Kinoshita A, Miwa H, Shinozaki K, Fukuda H, Sawa S (2011) Mitogen-activated protein kinase reg- ulated by the CLAVATA receptors contributes to shoot apicalmeristem homeostasis. Plant Cell Physiol. 52, 14–29.
Beveridge CA, Ross JJ, Murfet IC (1994) Branching mutant rms-2 in Pisum sativum (grafting studies and endogenous indole-3-acetic acid levels). Plant Physiol. 104, 953–959.
Bhattacharjee S, Halane MK, Kim SH, Gassmann W (2011) Pathogen effectors target Arabidopsis EDS1 and alter its interaction with immune regulators. Science 334, 1405–1408.
Bieleski RL (1973) Phosphate pools, phosphate transport, and phos- phate availability. Ann. Rev. Plant Physiol. 24, 225–252.
Bishopp A, Help H, El-Showk S, Weijers D, Scheres B, Friml J, Benkova′ E, Mahonen AP, Helariutta Y (2011a) A mutually ¨ ¨ inhibitory interaction between auxin and cytokinin speci?es vascular pattern in roots. Curr. Biol. 21, 917–926.
Bishopp A, Lehesranta S, Vaten A, Help H, El-Showk S, Scheres B, ′ Helariutta K, Mahonen AP, Sakakibara H, Helariutta Y (2011b) ¨ ¨ Phloem-transported cytokinin regulates polar auxin transport and maintains vascular pattern in the root meristem. Curr. Biol. 21, 927– 932.
Blindauer CA, Schmid R (2010) Cytosolic metal handling in plants: Determinants for zinc speci?city in metal transporters and metal- lothioneins. Metallomics 2, 510–529.
Bolanos L, Lukaszewski K, Bonilla I, Blevins D (2004) Why boron? ? Plant Physiol. Biochem. 42, 907–912.
Bollhoner B, Prestele J, Tuominen H (2012) Xylem cell death: Emerging understanding of regulation and function. J. Exp. Bot. 63, 1081–1094.
Bonke M, Thitamadee S, Mahonen AP, Hauser MT, Helariutta Y ¨ ¨ (2003) APL regulates vascular tissue identity in Arabidopsis. Nature 426, 181–186.
Boot KJM, Libbenga KR, Hille SC, Offringa R, van Duijn B (2012) Polar auxin transport: An early invention. J. Exp. Bot. 63, 4213– 4218.
Bostwick DE, Dannenhoffer JM, Skaggs MI, Lister RM, Larkins BA, Thompson GA (1992) Pumpkin phloem lectin genes are speci?cally expressed in companion cells. Plant Cell 4, 1539–1548.
Bowman JL, Floyd SK (2008) Patterning and polarity in seed plant shoots. Annu. Rev. Plant Biol. 59, 67–88.
Boyce KC, Brodribb TJ, Feild TS, Zwieniecki MA (2009) Angiosperm leaf vein evolution was physiologically and environmentally trans- formative. Proc. R. Soc. Series B 276, 1771–1776.
Boyce KC, Zwieniecki MA (2012) Leaf fossil record suggests limited in?uence of atmospheric CO2 on terrestrial productivity prior to angiosperm evolution. Proc. Natl. Acad. Sci. USA 109, 10403– 10408.
Brady SM, Orlando DA, Lee JY, Wang JY, Koch J, Dinneny JR, Mace D, Ohler U, Benfey PN (2007) A high-resolution root spatiotemporal map reveals dominant expression patterns. Science 318, 801–806.
Brady SM, Zhang L, Megraw M, Martinez NJ, Jiang E, Yi CS, Liu W, Zeng A, Taylor-Teeples M, Kim D, Ahnert S, Ohler U, Ware D, Walhout AJ, Benfey PN (2011) A stele-enriched gene regulatory network in the Arabidopsis root. Mol. Syst. Biol. 7, 459.
Brewer PB, Dun EA, Ferguson BJ, Rameau C, Beveridge CA (2009) Strigolactone acts downstream of auxin to regulate bud outgrowth in pea and Arabidopsis. Plant Physiol. 150, 482–493.
Brewer PB, Koltai H, Beveridge CA (2013) Diverse roles of strigolac- tones in plant development. Mol. Plant 6, 18–28.
Briggs LJ (1950) Limiting negative pressure of water. J. Appl. Phys. 21, 721–722.
Brodersen C, McElrone AJ, Choat B, Matthews MA, Shackel KA (2010) The dynamics of embolism repair in xylem: in vivo visual- izations using high-resolution computed tomography. Plant Physiol. 154, 1088–1095.
Brodersen P, Voinnet O (2006) The diversity of RNA silencing path- ways in plants. Trends Genet. 22, 268–280.
Brodribb TJ (2009) Xylem hydraulic physiology: The functional back- bone of terrestrial plant productivity. Plant Sci. 177, 245–251.
Brodribb TJ, Holbrook NM (2005) Water stress deforms tracheids peripheral peripheral to the leaf vein of a tropical conifer. Plant Physiol. 137, 1139–1146.
Brodribb TJ, McAdam SAM (2011) Passive origins of stomatal control in vascular plants. Science 331, 582–585.
Brown PH, Hu H (1996) Phloem mobility of boron is species dependent: Evidence for phloem mobility in sorbitol-rich species. Ann. Bot. 77, 497–505.
Bucci SJ, Scholz FG, Goldstein G, Meinzer FC, Sternberg LDSL (2003) Dynamic changes in hydraulic conductivity in petioles of two savanna species: Factors and mechanisms contributing to the re?lling of embolized vessels. Plant Cell Environ. 26, 1633–1645.
Buhtz A, Pieritz J, Springer F, Kehr J (2010) Phloem small RNAs,) nutrient stress responses, and systemic mobility. BMC Plant Biol. 10, 64.
Buhtz A, Springer F, Chappell L, Baulcombe DC, Kehr J (2008) Identi?cation and characterization of small RNAs from the phloem of Brassica napus. Plant J. 53, 739–749.
Burleigh SH, Harrison MJ (1999) The down-regulation of Mt4-like genes by phosphate fertilization occurs systemically and involves phosphate translocation to the shoots. Plant Physiol. 119, 241–248.
Butenko MA, Vie AK, Brembu T, Aalen RB, Bones AM (2009) Plant peptides in signalling: Looking for new partners. Trends Plant Sci. 14, 255–263.
Butter?eld BG (1995) Vessel element differentiation. In: Iqbal M, ed. The Cambial Derivatives. Encyclopedia of Plant Anatomy. Gebruder Borntraeger, Berlin. pp. 93–106.
Cakmak I, Kirkby EA (2008) Role of magnesium in carbon partitioning and alleviating photo-oxidative damage. Physiol. Plant 133, 692– 704.
Canny MJ (1975) Mass Transfer. In: MH Zimermann, JA Milburn, eds. Transport in Plants I. Phloem Transport. Springer-Verlag, Berlin.S, pp. 139–153.
Canny MJ (1998) Transporting water in plants. Amer. Sci. 86, 152–159.
Cano-Delgado A, Lee JY, Demura T (2010) Regulatory mechanisms for speci?cation and patterning of plant vascular tissues. Annu. Rev.Cell Dev. Biol. 26, 605–637.
Cao H, Bowling SA, Gordon S, Dong X (1994) Characterization of an Arabidopsis mutant that is nonresponsive to inducers of systemic acquired resistance. Plant Cell 6, 1583–1592.
Cao H, Glazebrook J, Clark JD, Volko S, Dong X (1997) The Arabidopsis NPR1 gene that controls systemic acquired resis- tance encodes a novel protein containing ankyrin repeats. Cell 88, 57–64.
Caplan J, Padmanabhan M, Dinesh-Kumar SP (2008) Plant NB-LRR immune receptors: From recognition to transcriptional reprogram- ming. Cell Host Microbe 3, 126–135.
Carlquist S (1984) Vessel grouping in dicotyledon wood: Signi?cance and relationship to imperforate tracheary elements. Aliso 10, 505– 525. C
Carlsbecker A, Lee JY, Roberts CJ, Dettmer J, Lehesranta S, Zhou J, Lindgren O, Moreno-Risueno MA, Vat′en A, Thitamadee S, Campilho A, Sebastian J, Bowman JL, Helariutta Y, Benfey PN (2010) Cell signalling by microRNA165/6 directs gene dose-dependent root cell fate. Nature 465, 316–321.
Carr JP, Dixon DC, Nikolau BJ, Voelkerding KV, Klessig DF (1987) Synthesis and localization of pathogenesis-related proteins in to- bacco. Mol. Cell Biol. 7, 1580–1583.
Catford JG, Staehelin C, Lerat S, Pich′e Y, Vierheilig H (2003) Suppression of arbuscular mycorrhizal colonization and nodulation in split-root systems of alfalfa after pre-inoculation and treatment with Nod factors. J. Exp. Bot. 54, 1481–1487.
Century KS, Holub EB, Staskawicz BJ (1995) NDR1, a locus of Arabidopsis thaliana that is required for disease resistance to both a bacterial and a fungal pathogen. Proc. Natl. Acad. Sci. USA 92, 6597–6601.
Century KS, Shapiro AD, Repetti PP, Dahlbeck D, Holub E, Staskawicz BJ (1997) NDR1, a pathogen-induced component required for Arabidopsis disease resistance. Science 278, 1963– 1965.
Thilmony R, He SY, Fobert P, Dengler N, Cameron RK (2011)Localization of DIR1 at the tissue, cellular and subcellular levelsduring systemic acquired resistance in Arabidopsis using DIR1:GUSand DIR1:EGFP reporters. BMC Plant Biol. 11, 125.
Chanda B, Venugopal SC, Kulshrestha S, Navarre D, Downie B, Vaillancourt L, Kachroo A, Kachroo P (2008) Glycerol-3- phosphate levels are associated with basal resistance to the hemibiotrophic fungus Colletotrichum higginsianum in Arabidopsis. Plant Physiol. 147, 2017–2029.
Chanda B, Ye X, Mandal M, Yu K, Sekine KT, Gao QM, Selote D, Hu Y, Stromberg A, Navarre D, Kachroo A, Kachroo P (2011) Glycerol-3-phosphate is a critical mobile inducer of systemic immunity in plants. Nat. Genet. 43, 421–427.
Chandra-Shekara AC, Navarre D, Kachroo A, Kang HG, Klessig D, Kachroo P (2004) Signaling requirement and role of salicylic acid in HRT- and rrt-mediated resistance to turnip crinkle virus in Arabidopsis. Plant J. 40, 647–659.
Chandra-Shekara AC, Venugopal SC, Kachroo A, Kachroo P (2007) Plastidal fatty acid levels regulate resistance gene-dependent de- fense signaling in Arabidopsis. Proc. Natl. Acad. Sci. USA 104, 7277–7282.
Chaturvedi R, Krothapalli K, Makandar R, Nandi A, Sparks A, Roth M, Welti R, Shah J (2008) Plastid omega3-fatty acid desaturase- dependent accumulation of a systemic acquired resistance inducing activity in petiole exudates of Arabidopsis thaliana is independent of jasmonic acid. Plant J. 54, 106–117.
Chaturvedi R, Venables B, Petros R, Nalam V, Li M, Wang X, Takemoto LJ, Shah J (2012) An abietane diterpenoid is a potent activator of systemic acquired resistance. Plant J. 71, 161–172.
Chen F, D’Auria JC, Tholl D, Ross JR, Gershenzon J, Noel JP, Pich- ersky E (2003) An Arabidopsis thaliana gene for methylsalicylate biosynthesis, identi?ed by a biochemical genomics approach, has a role in defense. Plant J. 36, 577–588.
Chen HM, Pang Y, Zeng J, Ding Q, Yin SY, Liu C, Lu MZ, Cui KM, He XQ (2012a) The Ca2 -dependent DNases are involved in secondary + xylem development in Eucommia ulmoides. J. Integr. Plant Biol. 54, 456–470.
Chen LQ, Qu XQ, Hou BH, Sosso D, Osorio S, Fernie AR, Frommer WB (2012b) Sucrose ef?ux mediated by SWEET proteins as a key step for phloem transport. Science 335, 207–211.
Chen Z, Silva H, Klessig DF (1993) Involvement of reactive oxygen species in the induction of systemic acquired resistance by salicylic acid in plants. Science 242, 883–886.
Chern MS, Fitzgerald HA, Yadav RC, Canlas PE, Dong X, Ronald PC (2001) Evidence for a disease-resistance pathway in rice similar to the NPR1-mediated signaling pathway in Arabidopsis. Plant J. 27, 101–113.
Chincinska IA, Liesche J, Kr¨ugel U, Michalska J, Geigenberger P, Grimm B, K¨uhn C (2008) Sucrose transporter StSUT4 from potato affects ?owering, tuberization, and shade avoidance response. Plant Physiol. 146, 515–528.
Chiou TJ, Lin SI (2011) Signaling network in sensing phosphate availability in plants. Annu. Rev. Plant Biol. 62, 185–206.
Choat B, Cobb AR, Jansen S (2008) Structure and function of bor- dered pits: New discoveries and impacts on whole-plant hydraulic function. New Phytol. 177, 608–626.
Choat B, Drayton WM, Brodersen C, Matthews MA, Schackel KA, Wada H, McElrone AJ (2010) Measurement of vulnerability to water stress-induced cavitation in grapevine: A comparison of four techniques applied to a long-vesseled species. Plant Cell Environ. 33, 1502–1512.
Choat B, Gambetta GA, Shakel KA, Matthews MA (2009) Vascular function in grape berries across development and its relevance to apparent hydraulic isolation. Plant Physiol. 151, 1677–1687.
Choat B, Jansen S, Zwieniecki MA, Smets E, Holbrook NM (2004) Changes in pit membrane porosity due to de?ection and stretching: The role of vestured pits. J. Exp. Bot. 55, 1569–1575.
Choat B, Medek DE, Stuart SA, Pasquet-Kok J, Egerton JJG, Salari H, Sack L, Ball MC (2011) Xylem traits mediate a trade-off between resistance to freeze-thaw-induced embolism and photo- synthetic capacity in overwintering evergreens. New Phytol. 191, 996–1005.
Christman MA, Sperry JS, Adler FR (2009) Testing the rare pit hypothesis in three species of Acer. New Phytol. 182, 664–674.
Christman MA, Sperry JS (2010) Single vessel ?ow measurements indicate scalariform perforation plates confer higher resistance to ?ow than previously estimated. Plant Cell Environ. 33, 431–443.
Christman MA, Sperry JS, Smith DD (2012) Rare pits, large vessels, and extreme vulnerability to cavitation in a ring-porous tree species. New Phytol. 193, 713–720.
Christmann A, Weiler EW, Steudle E, Grill E (2007) A hydraulic signal in root-to-shoot signalling of water shortage. Plant J. 52, 167–174.
Clay NK, Nelson T (2005) Arabidopsis thickvein mutation affects vein thickness and organ vascularization, and resides in a provascular cell-speci?c spermine synthase involved in vein de?nition and in polar auxin transport. Plant Physiol. 138, 767–777.
Cochard H, Cruiziat P, Tyree MT (1992) Use of positive pressures to establish vulnerability curves: Further support for the air-seeding hypothesis and implications for pressure-volume analysis. Plant Physiol. 100, 205–209.
Cochard H, Froux F, Mayr S, Coutand C (2004) Xylem wall collapse in water-stressed pine needles. Plant Physiol. 134, 401–408.
Cochard H, Gaelle D, Bodet C, Tharwat I, Poirier M, Ameglio T (2005) Evaluation of a new centrifuge technique for rapid generation of xylem vulnerability curves. Physiol. Plant. 124, 410–418.
Cochard H, Herbette S, Barigah T, Vilagrosa A (2010a) Does sample length in?uence the shape of vulnerability to cavitation curves? A test with the Cavitron spinning technique. Plant Cell Environ. 33, 1543–1552.
Cochard H, Herbette S, Hernandez E, Holtta T, Mencuccini M (2010b) The effects of sap ionic composition on xylem vulnerability to cavitation. J. Exp. Bot. 61, 275–285.
Cochard H, Holtta T, Herbette S, Delzon S, Mencuccini M (2009) New insights into the mechanisms of water-stress-induced cavita- tion in conifers. Plant Physiol. 151, 949–954.
Colombani A, Djerbi S, Bessueille L, Blomqvist K, Ohlsson A, Berglund T, Teeri TT, Bulone V (2004) In vitro synthesis of (1 → 3)-β-D-glucan (callose) and cellulose by detergent extracts of membranes from cell suspension cultures of hybrid aspen. Cellulose 11, 313–327.
Conte SS, Walker EL (2011) Transporters contributing to iron traf?ck- ing in plants. Mol. Plant 4, 464–476.
Coppinger P, Pepetti PP, Day B, Dahlbeck D, Mehlert A, Staskaw- icz BJ (2004) Overexpression of the plasma membrane-localized NDR1 protein results in enhanced bacterial resistance in Arabidop- sis thaliana. Plant J. 40, 225–237.
Corbesier L, Vincent C, Jang SH, Fornara F, Fan QZ, Searle I, Giakountis A, Farrona S, Gissot L, Turnbull C, Coupland G (2007) FT protein movement contributes to long-distance signaling in ?oral induction of Arabidopsis. Science 316, 1030–1033.
Courtois-Moreau CL, Pesquet E, Sjodin A, Muniz L, Bollhoner B, Kaneda M, Samuels L, Jansson S, Tuominen H (2009) A unique program for cell death in xylem ?bers of Populus stem. Plant J. 58, 260–274.
Cox RM, Malcolm JM (1997) Effects of duration of a simulated winter thaw on dieback and xylem conductivity of Betula papyrifera. Tree Physiol. 17, 389–396.
Crombie DS, Hipkins MF, Milburn JA (1985) Gas penetration of pit membranes in the xylem of Rhododendron as the cause of acoustically detectable sap cavitation. Aust. J. Plant Physiol. 12, 445–454.
Cronshaw J (1981) Phloem structure and function. Annu Rev. Plant Physiol. Plant Mol. Biol. 32, 465–484.
Cui H, Hao YM, Stolc V, Deng XW, Sakakibara H, Kojima M (2011) Genome-wide direct target analysis reveals a role for SHORT- ROOT in root vascular patterning through cytokinin homeostasis. Plant Physiol. 157, 1221–1231.
Cui H, Levesque MP, Vernoux T, Jung JW, Paquette AJ, Gal- lagher KL, Wang JY, Blilou I, Scheres B, Benfey PN (2007) An evolutionarily conserved mechanism delimiting SHR movement de?nes a single layer of endodermis in plants. Science 316, 421–425.
Cui KM, He XQ (2012) The Ca2 -dependent DNases are involved in + secondary xylem development in Eucommia ulmoides. J. Integr. Plant Biol. 54, 456–470.
Curie C, Cassin G, Couch D, Divol F, Higuchi K, Le Jean M, Misson J, Schikora A, Czernic P, Mari S (2009) Metal movement within the plant: Contribution of nicotianamine and yellow stripe 1-like transporters. Ann. Bot. 103, 1–11.
Dangl JL, Dietrich RA, Richberg MH (1996) Death don’t have no mercy: Cell death programs in plant-microbe interactions. Plant Cell 8, 1793–1807.
David-Schwartz R, Runo S, Townsley B, Machuka J, Sinha N (2008) Long-distance transport of mRNA via parenchyma cells and phloem across the host-parasite junction in Cuscuta. New Phytol. 179, 1133–1141.
Davidson A, Keller F, Turgeon R (2011) Phloem loading, plant growth form, climate. Protoplasma 248, 153–163.
Davis SD, Sperry JS, Hacke UG (1999) The relationship between xylem conduit diameter and cavitation caused by freeze-thaw events. Am. J. Bot. 86, 1367–1372.
Davis WJ, Zhang J (1991) Root signals and the regulation of growth and development of plants in drying soil. Annu. Rev. Plant Physiol. Mol. Biol. 42, 55–76.
Dean JV, Delaney SP (2008) Metabolism of salicylic acid in wild-type, ugt74f1 and ugt74f2 glucosyltransferase mutants of Arabidopsis thaliana. Physiol. Plant. 132, 417–425.
Deeken R, Ache P, Kajahan I, Klinkenberg J, Bringmann G, Hedrich R (2008) Identi?cation of Arabidopsis thaliana phloem RNAs provides a search criterion for phloem-based transcripts hidden in complex datasets of microarray experiments. Plant J. 55, 746–759.
Deeken R, Geiger D, Fromm J, Koroleva O, Ache P, Langenfeld- Heyser R, Sauer N, May ST, Hedrich R (2002) Loss of AKT2/3 potassium channel affects sugar loading into the phloem of Ara- bidopsis. Planta 216, 334–344.
Delaney TP, Friedrich L, Ryals JA (1995) Arabidopsis signal transduc- tion mutant defective in chemically and biologically induced diseaseresistance. Proc. Natl. Acad. Sci. USA 92, 6602–6606.
Demari-Weissler H, Rachamilavech S, Aloni R, German MA, Cohen S, Zwieniecki MA, Holbrook NM, Granot D (2009) LeFRK2 is required for phloem and xylem differentiation and the transport of both sugar and water. Planta 230, 795–805.
Demura T, Tashiro G, Horiguchi G, Kishimoto N, Kubo M, Matsuoka N, Minami A, Nagata-Hiwatashi M, Nakamura K, Okamura Y, Sassa N, Suzuki S, Yazaki J, Kikuchi S, Fukuda H (2002) Visu- alization by comprehensive microarray analysis of gene expression programs during transdifferentiation of mesophyll cells into xylem cells. Proc. Natl. Acad. Sci. USA 99, 15794–15799.
Demura T, Fukuda H (2007) Transcriptional regulation in wood forma- tion. Trends Plant Sci. 12, 64–70.
Dengler N, Kang J (2001) Vascular patterning and leaf shape. Curr. Opin. Plant Biol. 4, 50–56.
De Smet I, Tetsumura T, De Rybel B, Frey NF, Laplaze L, Casimiro I, Swarup R, Naudts M, Vanneste S, Audenaert D, Inze D, Bennett MJ, Beeckman T (2007) Auxin-dependent regulation of lateral root positioning in the basal meristem of Arabidopsis. Development 134, 681–690.
Despr′es C, DeLong C, Glaze S, Liu E, Fobert PR (2000) The Arabidopsis NPR1/NIM1 protein enhances the DNA binding activity of a subgroup of the TGA family of bZIP transcription factors. Plant Cell 12, 279–290.
Despr′es C, Chubak C, Rochon A, Clark R, Bethune T, Desveaux D, Fobert PR (2003) The Arabidopsis NPR1 disease resistance protein is a novel cofactor that confers redox regulation of DNA binding activity to the basic domain/leucine zipper transcription factor TGA1. Plant Cell 15, 2181–2191.
Dhawan W, Luo H, Foerster AM, AbuQamar S, Du HN, Briggs SC, Scheid OM, Mengiste T (2009) HISTONE MONOUBIQUITINA- TION1 interacts with a subunit of the mediator complex and regu- lates defense against necrotrophic fungal pathogens in Arabidopsis. Plant Cell 21, 1000–1019.
Dhondt S, Coppens F, De Winter F, Swarup K, Merks RMH, Inze D, Bennett MJ, Beemster GTS (2010) SHORT-ROOT and SCARECROW regulate leaf growth in Arabidopsis by stimulating S-phase progression of the cell cycle. Plant Physiol. 154, 1183– 1195.
DiDonato R, Roberts L, Sanderson T, Eisley R, Walker E (2004) Arabidopsis yellow stripe-like2 (YSL2): A metal-regulated gene encoding a plasma membrane transporter of nicotianamine-metal complexes. Plant J. 39, 403–414.
Di′evart A, Clark SE (2004) LRR-containing receptors regulating plant development and defense. Development 131, 251–261.
Dinant S, Lucas WJ (2012) Sieve elements: Puzzling activ- ities deciphered by proteomics studies. In: GA Thompson, AJE van Bel, eds. Phloem: Molecular Cell Biology, Systemic Communication, Biotic Interactions. Wiley-Blackwell, Ames. pp. 157–185.
Doering-Saad C, Newbury HJ, Couldridge CE, Bale JS, Pritchard J (2006) A phloem-enriched cDNA library from Ricinus: Insights into phloem function. J. Exp. Bot. 57, 3183–3193.
Dolan L, Janmaat K, Willemsen V, Linstead P, Poethig S, Roberts K, Scheres B (1993) Cellular organisation of the Arabidopsis thaliana root. Development 119, 71–84.
Domagalska MA, Leyser O (2011) Signal integration in the control of shoot branching. Nat. Rev. Mol. Cell Biol. 12, 211–221.
Domec JC, Lachenbruch B, Meinzer FC (2006) Bordered pit structure and function determine spatial patterns of air-seeding thresholds in xylem of douglas-?r (Psuedotsuga menziesii; Pinaceae) trees. Am. J. Bot. 93, 1588–1600.
Domec JC, Warren JM, Meinzer FC, Lachenbruch B (2009) Safety factors for xylem failure by implosion and air-seeding with roots, trunks, and branches of young and old conifer trees. IAWA J. 30, 100–120.
Donner TJ, Sherr I, Scarpella E (2009) Regulation of preprocambial cell state acquisition by auxin signaling in Arabidopsis leaves. Development 136, 3235–3246.
Du J, Groover A (2010) Transcriptional regulation of secondary growth and wood formation. J. Integr. Plant Biol 52, 17–27.
Du S, Yamamoto F (2007) An overview of the biology of reaction wood formation. J. Integr. Plant Biol. 49, 131–143.
Duckett JG, Pressel S, P’ng KMY, Renzaglia, KS (2009) Exploding a myth: The capsule dehiscence mechanism and the function of pseudostomata in Sphagnum. New Phytol. 183, 1053–1063.
Dunoyer P, Brosnan CA, Schott G, Wang Y, Jay F, Alioua A, Himber C, Voinnet O (2010) An endogenous, systemic RNAi pathway in plants. EMBO J. 29, 1699–1712.
Durner J, Klessig DF (1995) Inhibition of ascorbate peroxidase by salicylic acid and 2.6-dichloroisonicdinic acid, two inducers of plant defense responses. Proc. Natl. Acad. Sci. USA 92, 11312–11316.
Durrant WE, Wang S, Dong X (2007) Arabidopsis SNI1 and RAD51D regulate both gene transcription and DNA recombination during the defense response. Proc. Natl. Acad. Sci. USA 104, 4223–4227.
Durrant W, Dong X (2004) Systemic acquired resistance. Annu. Rev. Phytopathol. 42, 185–209.
Durrett TP, Gassmann W, Rogers EE (2007) The FRD3-Mediated ef?ux of citrate into the root vasculature is necessary for ef?cient iron translocation. Plant Physiol. 144, 197–205.
Edwards D, Davies KL, AXE L (1992) A vascular conducting strand in the early plant Cooksonia. Nature 357, 683–685.
Edwards R (1994) Conjugation and metabolism of salicylic acid in tobacco. J. Plant Physiol. 143, 609–614.
Effmert U, Saschenbrecker S, Ross J, Negre F, Fraser CM, Noel JP, Dudareva N, Piechulla B (2005) Floral benzenoid carboxyl methyl- transferases: From in vitro to in planta function. Phytochemistry 66, 1211–1230.
Ejeta G (2007) Breeding for Striga resistance in sorghum: Exploitation of an intricate host-parasite biology. Crop Sci. 47, S216–S227.
Emery JF, Floyd SK, Alvarez J, Eshed Y, Hawker NP, Izhaki A, Baum SF, Bowman JL (2003) Radial patterning of Arabidopsisshoots by Class III HD-ZIP and KANADI genes. Curr. Biol. 13, 1768–1774.
Endo S, Demura T, Fukuda H (2001) Inhibition of proteasome activity by the TED4 protein in extracellular space: A novel mechanism for protection of living cells from injury caused by dying cells. Plant Cell Physiol. 42, 9–19.
Enyedi AJ, Yalpani N, Silverman P, Raskin I (1992) Localization, conjugation, and function of salicylic acid in tobacco during the hypersensitive reaction to tobacco mosaic virus. Proc. Natl. Acad. Sci. USA 89, 2480–2484.
Eom JS, Cho JI, Reinder A, Lee SW, Yoo Y, Tuan PQ, Choi SB, Bang G, Park YI, Cho MH, Bhoo SH, An G, Hahn TR, Ward JM, Jeon JS (2011) Impaired function of the tonoplast-localized sucrose transporter in rice (Oryza sativa), OsSUT2, limits the transport of vacuolar reserve sucrose and affects plant growth. Plant Physiol. 157, 109–119.
Esau K (1965a) Plant Anatomy. John Wiley & Sons, Inc., New York.
Esau K (1965b) Vascular Differentiation in Plants. Holt, Rinehart and Winston, New York.
Esau K (1969) The Phloem. Encyclopedia of Plant Anatomy. Born- taeger, Berlin.
Esau K, Cheadle VI, Gifford EM (1953) Comparative structure and possible trends of specialization of the phloem. Am. J. Bot. 40, 9– 19.
Eshed Y, Baum SF, Perea JV, Bowman JL (2001) Establishment of polarity in lateral organs of plants. Curr. Biol. 11, 1251–1260.
Etchells JP, Provost CM, Turner SR (2012) Plant vascular cell division is maintained by an interaction between PXY and ethylene signalling. PLoS Genet. 8, e1002997.
Etchells JP, Turner SR (2010) The pxy-cle41 receptor ligand pair de- ?nes a multifunctional pathway that controls the rate and orientation of vascular cell division. Development 137, 767–774.
Evert RF (2006) Esau’s Plant Anatomy: Meristems, Cells, and Tissues of the Plant Body: Their Structure, Function, and Development. John Wiley & Sons, Hoboken, NJ.
Evert RF, Warmbrodt RD, Eichhorn SE (1989) Sieve-pore development in some leptosporangiate ferns. Am. J. Bot. 76, 1404–1413.
Fan RC, Peng CC, Xu YH, Wang XF, Li Y, Shang Y, Du SY, Zhao R, Zhang XY, Zhang LY, Zhang DP (2009) Apple sucrose transporter SUT1 and sorbitol transporter SOT6 interact with cytochrome b5 to regulate their af?nity for substrate sugars. Plant Physiol. 150, 1880–1901.
Fan W, Dong X (2002) In vivo interaction between NPR1 and transcrip- tion factor TGA2 leads to salicylic acid-mediated gene activation in Arabidopsis. Plant Cell 14, 1377–1389.
FAO (2008) Forest and energy. Food and Agriculture Organization of the United Nations. FAO Forestry Paper 154.
FAO (2009) State of the world’s forests. FAO Report, Food and Agriculture Organization of the United Nations. ISBN 978-92-5- 106057-5.
Farrar JF, Jones DL (2000) The control of carbon acquisition by roots. New Phytol. 147, 43–53.
Feys BJ, Moisan LJ, Newman MA, Parker JE (2001) Direct interaction between the Arabidopsis disease resistance signaling proteins, EDS1 and PAD4. EMBO J. 20, 5400–5411.
Feys BJ, Wiermer M, Bhat RA, Moisan LJ, Medina-Escobar N, Neu C, Cabral A, Parker JE (2005) Arabidopsis SENESCENCE- ASSOCIATED GENE101 stablizes and signals within an EN- HANCED DISEASE SUSCEPTIBILITY1 complex in plant innate immunity. Plant Cell 17, 2601–2613.
Fiers M, Ku KL, Liu CM (2007) CLE peptide ligands and their roles in establishing meristems. Curr. Opin. Plant Biol. 10, 39–43.
Fisher DB (2000) Long-Distance Transport. In: B Buchanan, W Gris- sem, R Jones, eds. Biochemistry & Molecular Biology of Plants. American Soc. of Plant Biologists, Maryland, pp. 730–785.
Fisher DB, Cash-Clarke CE (2000a) Sieve tube unloading, post- phloem transport of ?uorescent tracers, proteins injected into sieve tubes severed aphid stylets. Plant Physiol. 123, 125–137.
Fisher DB, Cash-Clarke CE (2000b) Gradients in water potential, turgor pressure along the translocation pathway during grain ?lling in normally watered, water-stressed wheat plants. Plant Physiol. 123, 139–147.
Fisher DB, Wang N (1995) Sucrose concentration gradients along the post-phloem transport pathway in the maternal tissue of developing wheat grains. Plant Physiol. 109, 587–592.
Fisher DB, Wu K, Ku MSB (1992) Turnover of soluble proteins in the wheat sieve tube. Plant Physiol. 100, 1433–1441.
Fisher K, Turner S (2007) Pxy, a receptor-like kinase essential for maintaining polarity during plant vascular-tissue development. Curr. Biol. 17, 1061–1066.
Floyd SK, Bowman JL (2004) Gene regulation: Ancient microrna target sequences in plants. Nature 428, 485–486.
Floyd SK, Zalewski CS, Bowman JL (2006) Evolution of class iii homeodomain-leucine zipper genes in streptophytes. Genetics 173, 373–388.
Franco-Zorrilla JM, Mart′?n AC, Leyva A, Paz-Ares J (2005) Interac- tion between phosphate-starvation, sugar, and cytokinin signaling in Arabidopsis and the roles of cytokinin receptors CRE1/AHK4 and AHK3. Plant Physiol. 38, 847–57.
Franco-Zorrilla JM, Martin AC, Solano R, Rubio V, Leyva A, Paz- Ares J (2002) Mutations at CRE1 impair cytokinin-induced repres- sion of phosphate starvation responses in Arabidopsis. Plant J. 32, 353–360.
Franks P, Brodribb T (2005) Stomatal control and water transport in stems. In: Holbrook NM, Zwieniecki MA, eds. Vascular Transport in Plants. Elsevier, Amsterdam. pp. 69–89.
Fraysse LC, Wells B, McCann MC, Kjellbom P (2005) Speci?c plasma membrane aquaporins of the PIP1 subfamily are expressed in sieve elements and guard cells. Biol. Cell 97, 519–534.
Friedrich L, Vernooij E, Gaffney T, Morse A, Ryals J (1995) Characterization of tobacco plants expressing a bacterial salicylate hydroxylase gene. Plant Mol. Biol. 29, 959–968.
Froelich DR, Mullendore DL, Jensen KH, Ross-Elliot TJ, Anstead JA, Thompson GA, P′elissier HC, Knoblauch M (2011) Phloemultrastructure and pressure ?ow: Sieve-element-occlusion-relatedagglomerations do not affect translocation. Plant Cell 23, 4428–4445.
Fu ZQ, Yan S, Saleh A, Wang W, Ruble J, Oka N, Mohan R, Spoel SH, Tada Y, Zheng Y, Dong X (2012) NPR3 and NPR4 are receptors for the immune signal salicylic acid in plants. Nature 16, 228–232.
Fukuda H (2000) Programmed cell death of tracheary elements as a paradigm in plants. Plant Mol. Biol. 44, 245–253.
Fukuda H (2004) Signals that control plant vascular cell differentiation. Nat. Rev. Mol. Cell Biol. 5, 379–391.
Fukuda H, Hirakawa Y, Sawa S (2007) Peptide signaling in vascular development. Curr. Opin. Plant Biol. 10, 477–482.
Funk V, Kositsup B, Zhao C, Beers EP (2002) The Arabidopsis xylem peptidase XCP1 is a tracheary element vacuolar protein that may be a papain ortholog. Plant Physiol. 128, 84–94.
Gabaldon C, Ros LVG, Pedreno MA, Barcelo AR (2005) Nitric oxide production by the differentiating xylem of Zinnia elegans. New Phytol. 165, 121–130.
Gaffney T, Friedrich L, Vernooij B, Negmtto D, Nye G, Uknes S, Ward E, Kessmann H, Ryals J (1993) Requirement of salicylic acid for the induction of systemic acquired resistance. Science 261,754–756.
Gallagher KL, Benfey PN (2009) Both the conserved GRAS domain and nuclear localization are required for SHORT-ROOT movement. Plant J. 57, 785–797.
Garc′?a AV, Blanvillain-Baufum′e S, Huibers RP, Wiermer M, Li G, Gobbato E, Rietz S, Parker JE (2010) Balanced nuclear and cytoplasmic activities of EDS1 are required for a complete plant innate immune response. PLoS Pathogens 6, e1000970
Garcia-Mas J, Benjak A, Sanseverino W, Bourgeois M, Mir G, Gonz′alez VM, H′enaff E, C?amara F, Cozzuto L, Lowy E, Alioto T, Capella-Guti′errez S, Blanca J, Ca?nizares J, Ziarsolo P, Gonzalez-Ibeas D, Rodr′?guez-Moreno L, Droege M, Du L, G Alvarez-Tejado M, Lorente-Galdos B, Mel′e M, Yang L, Weng YQ, Navarro A, Marques-Bonet T, Aranda MA, Nuez F, Pic′o B, Gabald′on T, Roma G, Guig′o R, Casacuberta JM, Ar′us P, G Puigdom`enech P (2012) The genome of melon (Cucumis melo L.) Proc. Natl. Acad. Sci. USA 109, 11872–11877.
Gardiner J, Donner TJ, Scarpella E (2011) Simultaneous activation of SHR and ATHB8 expression de?nes switch to preprocambial cell state in Arabidopsis leaf development. Dev. Dynam. 240, 261–270.
Gaupels F, Buhtz A, Knauer T, Deshmurkh S, Waller F, van Bel AJE, Kogel KH, Kehr J (2008a) Adaption of aphid stylectomy for analyses of proteins and mRNA in barley phloem sap. J. Exp. Bot. 59, 3297–3306.
Gaupels F, Knauer T, van Bel AJE (2008b) A combinatory approach for analysis of protein sets in barley sieve-tube samples using EDTA-facilitated exudation and aphid stylectomy. J. Plant Physiol. 165, 95–103.
Gendre D, Czernic P, Conejero G, Pianelli K, Briat J, Lebrun M, Mari S (2007) TcYSL3, a member of the YSL gene family from the hyper-accumulator Thlaspi caerulescens, encodes a nicotianamine-Ni/Fetransporter. Plant J. 49, 1–15.
Genoud T, Buchala AJ, Chua NH, Metraux JP (2002) Phytochrome signalling modulates the SA-perceptive pathway in Arabidopsis. Plant J. 31, 87–95.
Ghanem ME, Albacete A, Smigocki AC, Fr′ebort I, Posp′?silov′a H, Mart′?nez-And′ujar C, Acosta M, S′anchez-Bravo J, Lutts S, Dodd IC, Perez-Alfocea F (2011) Root-synthesized cytokinins ′ improve shoot growth and fruit yield in salinized tomato (Solanum lycopersicum L.) plants. J. Exp. Bot. 62, 125–140.
Giaquinta RT (1983) Phloem loading of sucrose. Annu. Rev. Plant Physiol. 34, 347–387.
Giavalisco P, Kapitza K, Kolasa A, Buhtz A, Kehr J (2006) Towards the proteome of Brassica napus phloem sap. Proteomics 6, 896– 909.
Glazebrook J, Ausubel FM (1994) Isolation of phytoalexin-de?cient mutants of Arabidopsis thaliana and characterization of their inter- actions with bacterial pathogens. Proc. Natl. Acad. Sci. USA 91, 8955–8959.
Glazebrook J, Rogers EE, Ausubel FM (1996) Isolation of Arabidopsis mutants with enhanced disease susceptibility by direct screening. Genetics 143, 973–982.
Golecki B, Schulz A, Carstens-Behrens U, Kollmann R (1998) Evidence for graft transmission of structural phloem proteins or their precursors in heterografts of Cucurbitaceae. Planta 206, 630–640.
Golecki B, Schulz A, Thompson GA (1999) Translocation of structural P proteins in the phloem. Plant Cell 11, 127–140.
Gomez-Roldan V, Fermas S, Brewer PB, Puech-Pag`es V, Dun EA, Pillot JP, Letisse F, Matusova R, Danoun S, Portais JC, Bouwmeester H, B′ecard G, Beveridge CA, Rameau C, Rochange SF (2008) Strigolactone inhibition of shoot branching. Nature 455, 189–194.
Gould N, Minchin PEH, Thorpe MR (2004a) Direct measurements of sieve element hydrostatic pressure reveal strong regulation after pathway blockage. Funct. Plant Biol. 31, 987–993.
Gould N, Thorpe MR, Koroleva O, Minchin PEH (2005) Phloem hydrostatic pressure relates to solute loading rate: A direct test of the Munch hypothesis. Funct. Plant Biol. 32, 1019–1026. ¨
Gould N, Thorpe MR, Minchin PEH, Pritchard J, White PJ (2004b) Solute is imported to elongating root cells of barley as a pressure driven-?ow of solution. Funct. Plant Biol. 31, 391–397.
Grimmer C, Komor E (1999) Assimilate export by leaves of Ricinus communis L. growing under normal and elevated carbon dioxide concentrations: The same rate during the day, a different rate at night. Planta 209, 275–281.
Grodzinski B, Jiao J, Leonardos ED (1998) Estimating photosynthe- sis and concurrent export rates in C3 and C4 species at ambient and elevated CO2. Plant Physiol. 117, 207–215.
Grusak MA (1994) Iron transport to developing ovules of Pisum sativum. (I. seed import characteristics and phloem iron-loading capacity of source regions). Plant Physiol. 104, 649–655.
Guelette BS, Benning UF, Hoffmann-Benning S (2012) Identi?ca- tion of lipids and lipid-binding proteins in phloem exudates from Arabidopsis thaliana. J. Exp. Bot. 63, 3603–3616.
Guo S, Zhang J, Sun H, Salse J, Lucas WJ, Zhang H, Zheng Y, Mao L, Ren Y, Wang Z, Min J, Guo X, Murat F, Ham BK, Zhang Z, Gao S, Huang M, Xu Y, Zhong S, Bombarely A, Mueller LA, Zhao H, He H, Zhang Y, Zhang Z, Huang S, Tan T, Pang E, Lin K, Hu Q, Kuang H, Ni P, Wang B, Liu J, Kou Q, Hou W, Zou X, Jiang J, Gong G, Klee K, Schoof H, Huang Y, Hu X, Dong S, Liang D, Wang J, Wu K, Xia Y, Zhao X, Zheng Z, Xing M, Liang X, Huang B, Lv T, Wang J, Yin Y, Yi H, Li R, Wu M, Levi A, Zhang X, Giovannoni JJ, Wang J, Li Y, Fei Z, Xu Y (2012) The draft genome of watermelon (Citrullus lunatus) and resequencing of 20 diverse accessions. Nat. Genet. 45, 51–58.
Guo WJ, Bundithya W, Goldsbrough PB (2003) Characterization of the Arabidopsis metallothionein gene family: Tissue-speci?c expression and induction during senescence and in response to copper. New Phytol. 159, 369–381.
Guo WJ, Meetam M, Goldsbrough PB (2008) Examining the speci?c contributions of individual Arabidopsis metallothioneins to copper distribution and metal tolerance. Plant Physiol. 146, 1697–1706.
Hacke U, Sauter JJ (1996) Xylem dysfunction during winter and recovery of hydraulic conductivity in diffuse-porous and ring-porous trees. Oecologia 105, 435–439.
Hacke UG, Sperry JS (2003) Limits to xylem re?lling under negative pressure in Laurus nobilis and Acer negundo. Plant Cell Environ. 26, 303–311.
Hacke UG, Sperry JS, Pockman WP, Davis SD, McCulloh KA (2001a) Trends in wood density and structure are linked to pre- vention of xylem implosion by negative pressure. Oecologia 126, 457–461.
Hacke UG, Sperry JS, Wheeler JK, Castro L (2006) Scaling of angiosperm xylem structure with safety and ef?ciency. Tree Physiol. 26, 689–701.
Hacke UG, Stiller V, Sperry JS, Pittermann J, McCulloh KA (2001b) Cavitation fatigue: Embolism and re?lling cycles can weaken cavitation resistance of xylem. Plant Physiol. 125, 779– 786.
Hacke UG, Jansen S (2009) Embolism resistance of three borea conifers varies with pit structure. New Phytol. 182, 675–686.
Ham B-K, Brandom J, Xoconostle-Cazares, B, Ringgold V, Lough ′ TJ, Lucas WJ (2009) Polypyrimidine tract binding protein, Cm- RBP50, forms the basis of a pumpkin phloem ribonucleoprotein complex. Plant Cell 21, 197–215.
Hamburger D, Rezzonico E, MacDonald-Comber Petetot J, ′ Somerville C, Poirier Y (2002) Identi?cation and characterization of the Arabidopsis PHO1 gene involved in phosphate loading to the xylem. Plant Cell 14, 889–902.
Hamilton AJ, Baulcombe DC (1999) A species of small antisense RNA in posttranscriptional gene silencing in plants. Science 286, 950–952.
Han JJ, Lin W, Oda Y, Cui KM, Fukuda H, He XQ (2012) The proteasome is responsible for caspase-3-like activity during xylem development. Plant J. 72, 129–141.
Hanikenne M, Talke IN, Haydon MJ, Lanz C, Nolte A, Motte P, Kroymann J, Weigel D, Kramer U (2008) Evolution of metal ¨ hyperaccumulation required cis-regulatory changes and triplication of HMA4. Nature 453, 391–395.
Hannapel DJ (2010) A model system of development regulated by the long-distance transport of mRNA. J. Integr. Plant Biol. 52, 40–52.
Hanzawa Y, Takahashi T, Komeda Y (1997) ACL5: An Arabidopsis gene required for internodal elongation after ?owering. Plant J. 12, 863–874.
Hardtke CS, Berleth T (1998) The Arabidopsis gene MONOPTEROS encodes a transcription factor mediating embryo axis formation and vascular development. EMBO J. 17, 1405–1411.
Hardtke CS, Ckurshumova W, Vidaurre DP, Singh SA, Stamatiou G, Tiwari SB, Hagen G, Guilfoyle TJ, Berleth T (2004) Overlapping and non-redundant functions of the Arabidopsis auxin response factors MONOPTEROS and NONPHOTOTROPIC HYPOCOTYL 4. Development 131, 1089–1100.
Haritatos E, Medville R, Turgeon R (2000) Minor vein structure and sugar transport in Arabidopsis thaliana. Planta 211, 105– 111.
Hassan Z, Aarts MGM (2011) Opportunities and feasibilities for biotechnological improvement of Zn, Cd or Ni tolerance and ac- cumulation in plants. Environ. Exp. Bot. 72, 53–63.
Hawkesford MJ (2003) Transporter gene families in plants: The sulphate transporter gene family – redundancy or specialization? Physiol. Plant. 117, 155–163.
Haywood V, Yu TS, Huang NC, Lucas WJ (2005) Phloem long- distance traf?cking of GIBBERELLIC ACID INSENSITIVE RNA regulates leaf development. Plant J. 42, 49–68.
He Y, Gan S (2002) A gene encoding an acyl hydrolase is involved in leaf senescence in Arabidopsis. Plant Cell 14, 805–815.
Heidel AJ, Clarke JD, Antonovics J, Dong X (2004) Fitness costs of mutations affecting the systemic acquired resistance pathway in Arabidopsis thaliana. Genetics 168, 2197–2206.
Heidrich K, Wirthmueller L, Tasset C, Pouzet C, Deslandes L, Parker JE (2011) Arabidopsis EDS1 connects pathogen effec- tor recognition to cell compartment-speci?c immune responses. Science 334, 1401–1404.
Heil M, Baldwin IT (2002) Fitness costs of induced resistance: Emerg- ing experimental support for a slippery concept. Trends Plant Sci. 7, 61–66.
Herbette S, Cochard H (2010) Calcium is a major determinant of xylem vulnerability to cavitation. Plant Physiol. 153, 1932–1939.
Herbik A, Giritch A, Horstmann C, Becker R, Balzer HJ, Baumlein H, ¨ Stephan UW (1996) Iron and copper nutrition-dependent changes in protein expression in a tomato wild type and the nicotianamine- free mutant chloronerva. Plant Physiol. 111, 533–540.
Hermans C, Hammond JP, White PJ, Verbuggen N (2006) How do plants respond to nutrient shortage by biomass allocation? Trends Plant Sci. 11, 610–617.
Hickey L (1973) Classi?cation of the architecture of dicotyledonous leaves. Amer. J. Bot. 60, 17–33.
Hirakawa Y, Kondo Y, Fukuda H (2010) Regulation of vascular development by CLE peptide-receptor systems. J. Integr. Plant Biol. 52, 8–16.
Hirakawa Y, Kondo Y, Fukuda H (2010) TDIF peptide signaling regulates vascular stem cell proliferation via the WOX4 homeobox gene in Arabidopsis. Plant Cell 22, 2618–2629.
Hirakawa Y, Kondo Y, Fukuda H (2011) Establishment and mainte- nance of vascular cell communities through local signaling. Curr. Opin. Plant Biol. 14, 17–23.
Hirakawa Y, Shinohara H, Kondo Y, Inoue A, Nakanomyo I, Ogawa M, Sawa S, Ohashi-Ito K, Matsubayashi Y, Fukuda H (2008) Non-cell-autonomous control of vascular stem cell fate by a CLE peptide/receptor system. Proc. Natl. Acad. Sci. USA 105, 15208– 15213.
Hirose N, Takei K, Kuroha T, Kamada-Nobusada T, Hayashi H, Sakakibara H (2008) Regulation of cytokinin biosynthesis, com- partmentalization and translocation. J. Exp. Bot. 59, 75–83.
Hoad GV (1995) Transport of hormones in the phloem of higher plants. Plant Growth Reg. 16, 173–182.
Hoffman-Thoma G, van Bel AJE, Ehlers K (2001) Ultrastructure of minor-vein phloem and assimilate export in summer and winter leaves of the symplasmically loading evergreens Ajuga reptans L., Aucuba japonica Thumb. and Hedrix helix L. Planta 212, 231–242.
Holbrook NM, Shashidhar VR, James RA, Munns R (2002) Stomatal control in tomato with ABA-de?cient roots: Response of grafted plants to soil drying. J. Exp. Bot. 53, 1503–1514.
Holtta T, Mencuccini M, Nikinmaa E (2011) A carbon cost-gain model explains the observed patterns of xylem safety and ef?ciency. Plant Cell Environ. 34, 1819–1834.
Holtta T, Juurola E, Lindfors L, Porcar-Castell A (2012) Cavitation induced by a surfactant leads to transient release of water stress and subsequent “run away” embolism in scots pine (Pinus sylvestris) seedlings. J. Exp. Bot. 63, 1057–1067.
Hu G, deHart AKA, Li Y, Ustach C, Handley V, Navarre R, Hwang CF, Aegerter BJ, Williamson VM, Baker B (2005) EDS1 in tomato is required for resistance mediated by TIR-class R genes and the receptor-like R gene Ve. Plant J. 42, 376–391.
Hu H, Penn SG, Lebrilla CB, Brown PH (1997) Isolation and character- ization of soluble boron complexes in higher plants: The mechanism of phloem mobility of boron. Plant Physiol. 113, 649–655.
Hu L, Sun H, Li R, Zhang L, Wang S, Sui X, Zhang Z (2011) Phloem unloading follows an extensive apoplasmic pathway in cucumber (Cucumis sativa L.) fruit from anthesis to marketable maturing stage. Plant Cell Environ. 40, 743–748.
Huang SW, Li RQ, Zhang ZH, Li L, Gu XF, Fan W, Lucas WJ, Wang XW, Xie BY, Ni PX, Ren YY, Zhu HM, Li J, Lin K, Jin WW, Fei ZJ, Li GC, Staub J, Kilian A, van der Vossen EAG, Wu Y, Guo J, He J, Jia ZQ, Ren Y, Tian G, Lu Y, Ruan J, Qian WB, Wang MW, Huang QF, Li B, Xuan ZL, Cao JJ, Asan, Wu ZG, Zhang JB, Cai QL, Bai YQ, Zhao BW, Han YH, Li Y, Li
XF, Wang SH, Shi QX, Liu SQ, Cho WK, Kim JY, Xu Y, Heller-Uszynska K, Miao H, Cheng ZC, Zhang SP, Wu J, Yang YH,Kang HX, Li M, Liang HQ, Ren XL, Shi ZB, Wen M, Jian M,Yang HL, Zhang GJ, Yang ZT, Chen R, Liu SF, Li JW, Ma LJ,Liu H, Zhou Y, Zhao J, Fang XD, Li GQ, Fang L, Li YR, Liu DY,Zheng HK, Zhang Y, Qin N, Li Z, Yang GH, Yang S, Bolund L,Kristiansen K, Zheng HC, Li SC, Zhang XQ, Yang HM, Wang J,Sun RF, Zhang BX, Jiang SZ, Wang J, Du YC, Li SG (2009) Thegenome of the cucumber, Cucumis sativus L. Nat. Genet. 41, 1275–1281.
Huang NC, Yu TS (2009) The sequences of Arabidopsis GA- INSENSITIVE RNA constitute the motifs that are necessary and suf?cient for RNA long-distance traf?cking. Plant J. 59, 921–929.
Huang NC, Jane WN, Chen J, Yu TS (2012) Arabidopsis thaliana CENTRORADIALIS homologue (ATC) acts systemically to inhibit ?oral initiation in Arabidopsis. Plant J. 72, 175–184.
Hubbard RM, Stiller V, Ryan MG, Sperry JS (2001) Stomatal con- ductance and photosynthesis vary linearly with plant hydraulic conductance in ponderosa pine. Plant Cell Environ. 24, 113– 121.
Husbands AY, Chitwood DH, Plavskin Y, Timmermans MC (2009) Signals and prepatterns: New insights into organ polarity in plants. Genes Dev. 23, 1986–1997.
Hussain D, Haydon MJ, Wang Y, Wong E, Sherson SM, Young J, Camakaris J, Harper JF, Cobbett CS (2004) P-type ATPase heavy metal transporters with roles in essential zinc homeostasis in Arabidopsis. Plant Cell 16, 1327–1339.
Ilegems M, Douet V, Meylan-Bettex M, Uyttewaal M, Brand L, Bowman JL, Stieger PA (2010) Interplay of auxin, kanadi and class iii hd-zip transcription factors in vascular tissue formation. Development 137, 975–984.
Imai A, Hanzawa Y, Komura M, Yamamoto KT, Komeda Y, Taka- hashi T (2006) The dwarf phenotype of the Arabidopsis acl5 mutant is suppressed by a mutation in an upstream ORF of a bHLH gene. Development 133, 3575–3585.
Imai A, Komura M, Kawano E, Kuwashiro Y Takahashi T (2008) A semi-dominant mutation in the ribosomal protein L10 gene suppresses the dwarf phenotype of the acl5 mutant in Arabidopsis thaliana. Plant J. 56, 881–890.
Ingle RA, Mugford ST, Rees JD, Campbell MM, Smith JAC (2005) Constitutively high expression of the histidine biosynthetic pathway contributes to nickel tolerance in hyperaccumulator plants. Plant Cell 17, 2089–2106.
Ingram P, Dettmer J, Helariutta Y, Malamy JE (2011) Arabidopsis lateral root development 3 is essential for early phloem development and function, and hence for normal root system development. Plant J. 68, 455–467.
Irtelli B, Petrucci WA, Navari-Izzo F (2009) Nicotianamine and histidine/proline are, respectively, the most important copper chelators in xylem sap of Brassica carinata under condi- tions of copper de?ciency and excess. J. Exp. Bot. 60, 269– 277.
Ishihara T, Sekine KT, Hase S, Kanayama Y, Seo S, Ohashi Y, Kusano T, Shibata D, Shah J, Takahashi H (2008) Overexpres- sion of the Arabidopsis thaliana EDS5 gene enhances resistance to viruses. Plant Biol. 10, 451–461.
Ito J, Fukuda H (2002) ZEN1 is a key enzyme in the degradation of nuclear DNA during programmed cell death of tracheary elements. Plant Cell 14, 3201–3211.
Ito Y, Nakanomyo I, Motose H, Iwamoto K, Sawa S, Dohmae N, Fukuda H (2006) Dodeca-cle peptides as suppressors of plant stem cell differentiation. Science 313, 842–845.
Ivanov R, Brumbarova T, Bauer P (2012) Fitting into the harsh reality: Regulation of iron-de?ciency responses in dicotyledonous plants. Mol. Plant 5, 27–42.
Iwai H, Usui M, Hoshino H, Kamada H, Matsunaga T, Kakegawa K, Ishii T, Satoh S (2003) Analysis of sugars in squash xylem sap. Plant Cell Physiol. 44, 582–587.
Izhaki A, Bowman JL (2007) KANADI and Class III HD-ZIP gene families regulate embryo patterning and modulate auxin ?ow during embryogenesis in Arabidopsis. Plant Cell 19, 495–508.
Jack E, Hakvoort HWJ, Reumer A, Verkleij JAC, Schat H, Ernst WHO (2007) Real-time PCR analysis of metallothionein- 2b expression in metallicolous and non-metallicolous popula- tions of Silene vulgaris (Moench) Garcke. Environ. Exp. Bot. 59, 84–91.
Jacobson AL, Pratt RB (2012) No evidence for an open vessel effect in centrifuge-based vulnerability curves of a long-vesseled liana (Vitis vinifera). New Phytol. 194, 982–990.
Jacobson AL, Pratt RB, Ewers FW, Davis SD (2007) Cavitation resistance among 26 chaparral species of southern California. Ecol. Mon. 77, 99–115.
Jansen S, Baas P, Smets E (2001) Vestured pits: Their occurrence and systematic importance in eudicots. Taxon 50, 135–167.
Jansen S, Choat B, Pletsers A (2009) Morphological variation in intervessel pit membranes and implications to xylem function in angiosperms. Am. J. Bot. 96, 409–419.
Jansen S, Lamy JB, Burlett R, Cochard H, Gasson P, Delzon S (2012) Plasmodesmatal pores in the torus of bordered pit mem- branes affect cavitation resistance of conifer xylem. Plant Cell Environ. 35, 1109–1120.
Jarbeau JA, Ewers FW, Davis SD (1995) The mechanism of water- stress-induced embolism in two species of chaparral shrubs. Plant Cell Environ. 18, 189–196.
Jensen KH, Lee J, Bohr T, Bruus H, Holbrook NM, Zwieniecki MA (2011) Optimality of the Munch mechanism for translocation ¨of sugars in plants. J. Royal Soc. Interface 8, 1155–1165.
Jensen KH, Liesche J, Bohr T, Schulz A (2012) Universality of phloem transport in seed plants. Plant Cell Environ. 35, 1065–1076.
Jeong R-D, Chandra-Shekara AC, Barman SR, Navarre DA, Klessig D, Kachroo A, Kachroo P (2010) CRYPTOCHROME 2 and PHO- TOTROPIN 2 regulate resistance protein mediated viral defense by negatively regulating a E3 ubiquitin ligase. Proc. Natl. Acad. Sci. USA 107, 13538–13543.
Ji J, Strable J, Shimizu R, Koenig D, Sinha N, Scanlon MJ (2010) WOX4 promotes procambial development. Plant Physiol. 152, 1346–1356.
Jia W, Davies WJ (2008) Modi?cation of leaf apoplastic pH in relationf to stomatal sensitivity to root-sourced abscisic acid signals. Plant . Physiol. 143, 68–77.
Jiang F, Hartung W (2008) Long-distance signalling of abscisic acid (ABA): The factors regulating the intensity of the ABA signal. J. Exp. Bot. 59, 37–43.
Johri M (2008) Hormonal regulation in green plant lineage families. Physiol. Mol. Biol. Plants 14, 23–38.
Jones JD, Dangl JL (2006) The plant immune system. Nature 444, 323–329.
Jorgensen RA, Atkinson RG, Forster RLS, Lucas WJ (1998) An RNA-based information superhighway in plants. Science 279, 1486–1487.
Jun JH, Fiume E, Fletcher JC (2008) The CLE family of plant polypeptide signaling molecules. Cell Mol. Life Sci. 65, 743–755.
Jung HW, Tschaplinkski TJ, Wang L, Glazebrook J, Greenberg JT (2009) Priming in systemic plant immunity. Science 324, 89–91.
Kachroo A, Kachroo P (2006) Salicylic acid-, jasmonic acid- and ethylene-mediated regulation of plant defense signaling. In: Setlow J, ed. Genetic Engineering, Principles and Methods. 28, 55–83.
Kachroo A, Lapchyk L, Fukushigae H, Hildebrand D, Klessig D, Kachroo P (2003) Plastidial fatty acid signaling modulates salicylic acid- and jasmonic acid-mediated defense pathways in the Ara- bidopsis ssi2 mutant. Plant Cell 12, 2952–2965.
Kachroo A, Venugopal SC, Lapchyk L, Falcone D, Hildebrand D, Kachroo P (2004) Oleic acid levels regulated by glycerolipid metabolism modulate defense gene expression in Arabidopsis. Proc. Natl. Acad. Sci. USA 101, 5152–5257.
Kachroo P, Kachroo A, Lapchyk L, Hildebrand D, Klessig D (2003) Restoration of defective cross talk in ssi2 mutant: Role of salicylic acid, jasmonic acid, and fatty acids in SSI2-mediated signaling. Mol. Plant-Microbe Interact. 11, 1022–1029.
Kachroo P, Shanklin J, Shah J, Whittle E, Klessig D (2001) A fatty acid desaturase modulates the activation of defense signaling pathways in plants. Proc. Natl. Acad. Sci. USA 98, 9448–9453.
Kachroo P, Srivathsa CV, Navarre DA, Lapchyk L, Kachroo A (2005) Role of salicylic acid and fatty acid desaturation pathways in ssi2- mediated signaling. Plant Physiol. 139, 1717–1735.
Kachroo P, Yoshioka K, Shah J, Dooner H, Klessig DF (2000) Resistance to turnip crinkle virus in Arabidopsis requires two host genes and is salicylic acid dependent but NPR1, ethylene and jasmonate independent. Plant Cell 12, 677–690.
Kakehi J, Kuwashiro Y, Motose H, Igarashi K, Takahashi T (2010) Norspermine substitutes for thermospermine in the control of stem elongation in Arabidopsis thaliana. FEBS Lett. 584, 3042–3046.
Kakehi JI, Kuwashiro Y, Niitsu Y, Takahashi T (2008) Thermosper- mine is required for stem elongation in Arabidopsis thaliana. Plant Cell Physiol. 49, 1342–1349.
Kallarackal J, Milburn JA (1984) Speci?c mass transfer, sink- controlled phloem translocation in castor bean. Aust. J. Plant Physiol. 10, 561–568.
Kang J, Dengler N (2002) Cell cycling frequency and expression of the homeobox gene ATHB-8 during leaf vein development in Arabidopsis. Planta 216, 212–219.
Kang J, Dengler N (2004) Vein pattern development in adult leaves of Arabidopsis thaliana. Int. J. Plant Sci. 165, 231–242.
Kang J, Mizukami Y, Wang H, Fowke L, Dengler NG (2007) Modi- ?cation of cell proliferation patterns alters leaf vein architecture in Arabidopsis thaliana. Planta 226, 1207–1218.
Karpinski S, Gabrys H, Mateo A, Karpinska B, Mullineaux P (2003) Light perception in plant disease defense signaling. Curr. Opin. Plant Biol. 6, 390–396.
Kaufman I, Schulze-Till T, Schneider H, Zimmermann U, Jakob P, Wegner L (2009) Function repair of embolized vessels in maize roots after temporal drought stress, as demonstrated by magnetic resonance imaging. New Phytol. 184, 245–256.
Kempers R, van Bel AJE (1997) Symplasmic connections between sieve element and companion cell in the stem of Vicia fava L. have a molecular exclusion limit of at least 10 kD. Planta 201, 195–201.
Kenrick P, Crane PR (1997) The origin and early evolution of plants on land. Nature 389, 33–39.
Kerkeb L, Kramer U (2003) The role of free histidine in xylem loading ¨ of nickel in Alyssum lesbiacum and Brassica juncea. Plant Physiol. 131, 716–724.
Kerstetter RA, Bollman K, Taylor RA, Bomblies K, Poethig RS (2001) KANADI regulates organ polarity in Arabidopsis. Nature 411 706–709.
Kiba T, Yamada H, Sato S, Kato T, Tabata S, Yamashino T, Mizuno T (2003) The type-A response regulator, ARR15, acts as a negative regulator in the cytokinin-mediated signal transduction in Arabidopsis thaliana. Plant Cell Physiol. 44, 868–874.
Kim HS, Delaney TP (2002) Over-expression of TGA5, which en- codes a bZIP transcription factor that interacts with NIM1/NPR1, confers SAR-independent resistance in Arabidopsis thaliana to Peronospora parasitica. Plant J. 32, 151–163.
Kim M, Canio W, Kessler S, Sinha N (2001) Developmental changes due to long-distance movement of a homeobox fusion transcript in tomato. Science 293, 287–289.
Klatte M, Schuler M, Wirtz M, Fink-Straube C, Hell R, Bauer P (2009) The analysis of Arabidopsis nicotianamine synthase mutants reveals functions for nicotianamine in seed iron loading and iron de?ciency responses. Plant Physiol. 150, 257–271.
Kobayashi Y, Kuroda K, Kimura K, Southron-Francis JL, Furuzawa A, Iuchi S, Kobayashi M, Taylor GJ, Koyama H (2008) Amino acid polymorphisms in strictly conserved domains of a P-type ATPase HMA5 are involved in the mechanism of copper tolerance variation in Arabidopsis. Plant Physiol. 148, 969–980.
Kohlen W, Charnikhova T, Liu Q, Bours R, Domagalska MA, Beguerie S, Verstappen F, Leyser O, Bouwmeester H, Ruyter-Spira C (2011) Strigolactones are transported through the xylemand play a key role in shoot architectural response to phosphatede?ciency in nonarbuscular mycorrhizal host Arabidopsis. PlantPhysiol. 155, 974–987.
Kohonen M, Helland A (2009) On the function of wall sculpturing in xylem conduits. J. Bionics Eng. 6, 324–329.
Koike S, Inoue H, Mizuno D, Takahashi M, Nakanishi H, Mori S, Nishizawa N (2004) OsYSL2 is a rice metal-nicotianamine transporter that is regulated by iron and expressed in the phloem. Plant J. 39, 415–424.
Kondo Y, Hirakawa Y, Fukuda H (2011) CLE peptides can negatively regulate protoxylem vessel formation via cytokinin signaling. Plant Cell Physiol. 52, 37–48.
Koo YJ, Kim MA, Kim EH, Song JT, Jung C, Moon JK, Kim JH, Seo HS, Song SI, Kim JK, Lee JS, Cheong JJ, Choi YD (2007) Overexpression of salicylic acid carboxyl methyltransferase reduces salicylic acid-mediated pathogen resistance in Arabidopsis thaliana. Plant Mol. Biol. 64, 1–15.
Koroleva OA, Tomos AD, Farrar J, Pollock CJ (2002) Changes in osmotic and turgor pressure in response to sugar accumulation in barley source leaves. Planta 215, 210–219.
Kramer EM, Lewandowski M, Beri S, Bernard J, Borkowski M, Borkowski MH, Burch?eld LA, Mathisen B, Normanly J (2008) Auxin gradients are associated with polarity changes in trees. Science 320, 1610.
Kramer U (2010) Metal hyperaccumulation in plants. Annu. Rev. Plant ¨ Biol. 61, 517–534.
Kramer U, Cotter-Howells JD, Charnock JM, Baker AJM, Smith JAC ¨ (1996) Free histidine as a metal chelator in plants that accumulate nickel. Nature 379, 635–638.
Krecek P, Skupa P, Libus J, Naramoto S, Tejos R, Friml J, Zazimalova E (2009) The pin-formed (pin) protein family of auxin transporters. Genome Biol. 10, 249.
Krugel U, Veenhoff LM, Langbein J, Wiederhold E, Liesche J, ¨ Friedrich T, Grimm B, Martinoia E, Poolman B, Kuhn C (2008) ¨ Transport and sorting of Solanum tuberosum sucrose transporter SUT1 is affected by posttranslational modi?cation. Plant Cell 20, 2497–2513.
Kruger C, Berkowitz O, Stephan U, Hell R (2002) A metal-binding ¨ member of the late embryogenesis abundant protein family trans- ports iron in the phloem of Ricinus communis L. J. Biol. Chem. 277, 25062–25069.
Kubo M, Udagawa M, Nishikubo N, Horiguchi G, Yamaguchi M, Ito J, Mimura T, Fukuda H, Demura T (2005) Transcription switches for protoxylem and metaxylem vessel formation. Genes Dev. 19, 1855–1860.
Kudo T, Kiba T, Sakakibara H (2010) Metabolism and long-distance translocation of cytokinins. J. Integr. Plant Biol. 52, 53–60.
Kumar D, Klessig DF (2003) High-af?nity salicylic acid-binding protein 2 is required for plant innate immunity and has salicylic acid stimulated lipase activity. Proc. Natl. Acad. Sci. USA 100, 16101– 16106.
Kunkel BN, Brooks DM (2002) Cross talk between signaling pathways. Curr. Opin. Plant Biol. 5, 325–331.
Kupper H, Mijovilovich A, Meyer-Klaucke W, Kroneck PMH (2004) ¨ Tissue- and age-dependent differences in the complexation of cadmium and zinc in the cadmium/zinc hyperaccumulator Thlaspi caerulescens (Ganges Ecotype) revealed by X-ray absorption spec- troscopy. Plant Physiol. 134, 748–757.
Kuriyama H, Fukuda H (2002) Developmental programmed cell death in plants. Curr. Opin. Plant Biol. 5, 568–573.
Kwon SI, Cho HJ, Jung JH, Yoshimoto K, Park OK (2010) The RabGTPase RabG3b functions in autophagy and contributes to L tracheary element differentiation in Arabidopsis. Plant J. 64, 151– 164.
Lachaud S, Maurousset L (1996) Occurrence of plasmodesmata between differentiating vessels and other xylem cells in Sorbus torminalis L. Crantz and their fate during xylem maturation. Pro-toplasma 191, 220–226.
Lai F, Thacker J, Li Y, Doerner P (2007) Cell division activity determines the magnitude of phosphate starvation responses in Arabidopsis. Plant J. 50, 545–556.
Lalonde S, Tegeder M, Throne-Holst M, Frommer WB, Patrick JW (2003) Phloem loading, unloading of amino acids, sugars. Plant Cell Environ. 26, 37–56.
Langan S, Ewers FW, Davis SD (1997) Xylem dysfunction caused by water stress and freezing in two species of co-occurring chaparral shrubs. Plant Cell Environ. 20, 425–437.
Lau S, Shao N, Bock R, Jurgens G, De Smet I (2009) Auxin ¨ signaling in algal lineages: Fact or myth? Trends Plant Sci. 14, 182– 188.
Lavicoli A, Boutet E, Buchala A, Metraux JP (2003) Induced resis- tance in Arabidopsis thaliana in response to root inoculation with Pseudomonas ?uorescens CHA0. Mol. Plant-Microbe Interact. 16, 851–858.
Lawton K, Weymann K, Friedrich L, Vernooij B, Uknes S, Ryals J (1995) Systemic acquired resistance in Arabidopsis requires salicylic acid but not ethylene. Mol. Plant-Microbe Interact. 8, 863– 870.
Le Jean ML, Schikora A, Mari S, Briat JF, Curie C (2005) A loss-of- function mutation in AtYSL1 reveals its role in iron and nicotianamine seed loading. Plant J. 44, 769–782.
Lee DK, Sieburth LE (2012) The bps signal: Embryonic arrest from an auxin-independent mechanism in bypass triple mutants. Plant Signal. Behav. 7, 698–700.
Lee DK, Van Norman JM, Murphy C, Adhikari E, Reed JW, Sieburth LE (2012) In the absence of BYPASS1-related gene function, the bps signal disrupts embryogenesis by an auxin-independent mechanism. Development 139, 805–815.
Lee HI, Raskin I (1998) Glucosylation of salicylic acid in Nicotiana tabacum cv. Xanthi-nc. Phytopathol. 88, 692–697.
Lee HI, Raskin I (1999) Puri?cation, cloning, and expression of a pathogen inducible UDP-glucose:salicylic acid glucosuyltransferase from tobacco. J. Biol. Chem. 274, 36637–36642.
Lee JY, Colinas J, Wang JY, Mace D, Ohler U, Benfey PN (2006) Transcriptional and posttranscriptional regulation of transcription) factor expression in Arabidopsis roots. Proc. Natl. Acad. Sci. USA f 103, 6055–6060.
Lee J, Holbrook NM, Zwieniecki MA (2012) Ion-induced changes in the structure of bordered pit membranes. Front. Plant Sci. 3, 1–4.
Lee JY, Yoo BC, Rojas M, Gomez Ospina N, Staehelin LA, Lucas WJ (2003) Selective traf?cking of non-cell-autonomous proteins mediated by NtNCAPP1. Science 299, 392–396.
Leggewie G, Kolbe A, Lemoine R, Roessner U, Lytovchenko A, Zuther E, Kehr J, Frommer WB, Riemeier JW, Willmitzer L, Fernie AR (2003) Overexpression of the sucrose transporter SoSUT1 in potato results in alterations in leaf carbon partitioning and in tuber metabolism but has little impact on tuber morphology. Planta 217, 158–167.
Lehesranta SJ, Lichtenberger R, Helariutta Y (2010) Cell-to-cell communication in vascular morphogenesis. Curr. Opin. Plant Biol. 13, 59–65.
Lehmann K, Hause B, Altmann D, Kock M (2001) Tomato ribonucle- ase LX with the functional endoplasmic reticulum retention motif HDEF is expressed during programmed cell death processes, including xylem differentiation, germination, and senescence. Plant Physiol. 127, 436–449.
Lehto T, Lavola A, Julkunen-Tiitto R, Aphalo PJ (2004) Boron retranslocation in scots pine and norway spruce. Tree Physiol. 24, 1011–1017.
Lens F, Sperry JS, Christman MA, Choat B, Rabaey D, Jansen S (2010) Testing hypotheses that link wood anatomy to cavitation resistance and hydraulic conductivity in the genus Acer. New Phytol. 190, 709–723.
Leonardos ED, Micallef BJ, Micallef MC, Grodzinski B (2006) Diel patterns of leaf export and of main shoot growth for Flaveria linearis with altered leaf sucrose-starch partitioning. J. Exp. Bot. 57, 801– 814.
Levesque MP, Vernoux T, Busch W, Cui H, Wang JY, Blilou I, Hassan H, Nakajima K, Matsumoto N, Lohmann JU, Scheres B, Benfey PN (2006) Whole-genome analysis of the SHORT-ROOT developmental pathway in Arabidopsis. PLoS Biol. 4, e143.
Li CY, Zhang K, Zeng XW, Jackson S, Zhou Y, Hong YG (2009) A cis element within Flowering Locus T mRNA determines its mobility and facilitates traf?cking of heterologous viral RNA. J. Virol. 83, 3540–3548.
Li P, Ham BK, Lucas WJ (2011) CmRBP50 phosphorylation is essential for assembly of a stable phloem-mobile high-af?nity ri- bonucleoprotein complex. J. Biol. Chem. 286, 23142–23149.
Li X, Zhang Y, Clarke JD, Li Y, Dong X (1999) Identi?ca- tion and cloning of a negative regulator of systemic acquired resistance, SNI1, through a screen for supressors of npr1-1. Cell 3, 329–339.
Li Y, Beisson F, Koo AJ, Molina I, Pollard M, Ohlrogge J (2007) Identi?cation of acyltransferases required for cutin biosynthesis andproduction of cutin with suberin-like monomers. Proc. Natl. Acad.Sci. USA 104, 18339–18344.
Liao MT, Hedley MJ, Woolley DJ, Brooks RR, Nichols MA (2000) Copper uptake and translocation in chicory (Cichorium intybus L. cv Grasslands Puna) and tomato (Lycopersicon esculentum Mill. cv Rondy) plants grown in NFT system. II. The role of nicotianamine and histidine in xylem sap copper transport. Plant Soil 223, 243– 252.
Liesche J, Schulz A (2012) In vivo quanti?cation of cell coupling in plants with different phloem loading strategies. Plant Physiol. 159, 355–365.
Lifschitz E, Eviatar T, Rozman A, Shalit A, Goldshmidt A, Amsellem Z, Alvarez JP, Eshed Y (2006) The tomato FT ortholog triggers systemic signals that regulate growth and ?owering and substitute for diverse environmental stimuli. Proc. Natl. Acad. Sci. USA 103, 6398–6403.
Ligrone R, Duckett JG, Renzaglia KS (2000) Conducting tissues and phyletic relationships of bryophytes. Phil. Trans. R. Soc. Lond. B. Biol. Sci. 355, 795–813.
Ligrone R, Duckett JG, Renzaglia KS (2012) Major transitions in the evolution of early land plants: A bryological perspective. Ann. Bot. 109, 851–871.
Lin MK, Belanger H, Lee YJ, Varkonyi-Gasic E, Taoka KI, Miura E, Xoconostle-Cazares B, Gendler K, Jorgensen RA, Phinney ′ B, Lough TJ, Lucas WJ (2007) FT protein may act as the long- distance ?origenic signal in the cucurbits. Plant Cell 19, 1488–1506.
Lin MK, Lee YJ, Lough TJ, Phinney BS, Lucas WJ (2009) Analysis of the pumpkin phloem proteome provides insights into angiosperm sieve tube function. Mol. Cell. Proteomics 8, 343–356.
Lin SI, Chiang SF, Lin WY, Chen JW, Tseng CY, Wu PC, Chiou TJ (2008) Regulatory network of microRNA399 and PHO2 by systemic signaling. Plant Physiol. 147, 732–746.
Lindermayr C, Sell S, Muller B, Leister D, Durner J (2010) Redox ¨ regulation of the NPR1-TGA1 system of Arabidopsis thaliana by nitric oxide. Plant Cell 22, 2894–2907.
Linkohr BI, Williamson LC, Fitter AH, Leyser HMO (2002) Nitrate and phosphate availability and distribution have different effects on root system architecture of Arabidopsis. Plant J. 29, 751–760.
Liu G, Holub EB, Alonso JM, Ecker JR, Fobert PR (2005) An Ara- bidopsis NPR1-like gene, NPR4, is required for disease resistance. Plant J. 41, 304–318.
Liu PP, Dahl CC, Klessig DF (2011) The extent to which methyl salicylate is required for systemic acquired resistance is dependent on exposure to light after infection. Plant Physiol. 157, 2216–2226.
Liu TY, Chang CY, Chiou TJ (2009) The long-distance signaling of mineral macronutrients. Curr. Opin. Plant Biol. 12, 312–319.
Liu Y, Schiff M, Marathe R, Dinesh-Kumar SP (2002) Tobacco Rar1, EDS1 and NPR1/NIM1 like genes are required for N-mediated resistance to tobacco mosaic virus. Plant J. 30, 415–429.
Loepfe L, Martinez-Vilalta J, Pinol J, Mencuccini M (2007) The relevance of xylem network structure for plant hydraulic ef?ciency and safety. J. Theor. Biol. 247, 788–803.
Lomax TL, Hicks GR (1992) Speci?c auxin-binding proteins in the plasma membrane: Receptors or transporters? Biochem. Soc. Trans. 20, 64–69.
Loon LCV, Gerritsen YAM, Ritter CE (1987) Identi?cation, puri?cation, and characterization of pathogenesis-related proteins from virus- infected Samsun NN tobacco leaves. Plant Mol. Biol. 9, 593–609.
Lopez-Bucio J, Hernandez-Abreu E, Sanchez-Calderon L, Nieto- ′ ′ ′ ′ Jacobo MF, Simpson J, Herrera-Estrella L (2002) Phosphate availability alters architecture and causes changes in hormone sensitivity in the Arabidopsis root system. Plant Physiol. 129, 244– 256.
Lopez-Millan AF, Morales F, Abad′?a A, Abad′?a J (2000) Effects of ′ ′ iron de?ciency on the composition of the leaf apoplastic ?uid and xylem sap in sugar beet. Implications for iron and carbon transport. Plant Physiol. 124, 873–884.
Lough TJ, Lucas WJ (2006) Integrative plant biology: Role of phloem long-distance macromolecular traf?cking. Annu. Rev. Plant Biol. 57, 203–232.
Lu KJ, Huang NC, Liu YS, Lu CA, Yu TS (2012) Long-distance movement of Arabidopsis FLOWERING LOCUS T RNA participates in systemic ?oral regulation. RNA Biology 9, 653–662.
Lucas WJ (2006) Plant viral movement proteins: Agents for cell-to-cell traf?cking of viral genomes. Virology 344, 169–184.
Lucas WJ, Ding B, van der Schoot C (1993) Plasmodesmata and the supracellular nature of plants. New Phytol. 125, 435–476.
Lucas WJ, Yoo BC, Kragler F (2001) RNA as a long-distance information macromolecule in plants. Nat. Rev. Molec. Cell Biol. 2, 849–857.
Lundmark M, Cavaco AM, Trevanior S, Hurry V (2006) Carbon partitioning and export in transgenic Arabidopsis thaliana with altered capacity for sucrose synthesis grown at low temperature: A role for metabolite transporters. Plant Cell Environ. 29, 1703– 1714.
Ma KW, Flores C, Ma W (2011) Chromatin con?guration as a battle?eld in plant-bacteria interactions. Plant Physiol. 157, 535–543.
Ma Y, Miura E, Ham BK, Cheng HW, Lee YJ, Lucas WJ (2010) Pumpkin eIF5A isoforms interact with components of the transla- tional machinery in the cucurbit sieve tube system. Plant J. 64, 536–550.
Madey E, Nowack LM, Thompson JE (2002) Isolation and character- ization of lipid in phloem sap of canola. Planta 214, 625–634.
Mahonen AP, Bishopp A, Higuchi M, Nieminen KM, Kinoshita K, ¨ ¨ Tormakangas K, Ikeda Y, Oka A, Kakimoto T, Helariutta Y (2006) ¨ ¨ Cytokinin signaling and its inhibitor AHP6 regulate cell fate during vascular development. Science 311, 94–98.
Mahonen AP, Bonke M, Kauppinen L, Riikonen M, Benfey PN, ¨ ¨ Helariutta Y (2000) A novel two-component hybrid molecule regu- lates vascular morphogenesis of the Arabidopsis root. Genes Dev. 14, 2938–2943.
Mahajan A, Bhogale S, Kang IH, Hannapel DJ, Banerjee AK (2012) The mRNA of a knotted1-like transcription factor of potato is phloem mobile. Plant Mol. Biol. 79, 595–608.
Maherali H, Pockman WT, Jackson RB (2003) Adaptive variation in the vulnerability of woody plants to xylem cavitation. Ecology 85, 2184–2199.
Maldonado AM, Doerner P, Dixon RA, Lamb CJ, Cameron RKA (2002) Putative lipid transfer protein involved in systemic resistance signaling in Arabidopsis. Nature 419, 399–403.
Mandal M, Chanda B, Xia Y, Yu K, Sekine K, Gao QM, Selote D, Kachroo A, Kachroo P (2011) Glycerol-3-phosphate and systemic immunity. Plant Signal. Behav. 6, 1871–1874.
Mandal MK, Chandra-Shekara AC, Jeong RD, Yu K, Zhu S, Chanda B, Navarre D, Kachroo A, Kachroo P (2012) Oleic acid-dependent modulation of NITRIC OXIDE ASSOCIATED 1 protein levels regulates nitric oxide-mediated defense signaling in Arabidopsis. Plant Cell 24, 1654–1674.
March-D′?az R, Garc′?a-Dom′?nguez M, Lozano-Juste J, Leon J, ′ Florencio FJ, Reyes JC (2008) Histone H2A.Z and homologues of components of the SWR1 complex are required to control immunity in Arabidopsis. Plant J. 53, 475–487.
Mari S, Gendre D, Pianelli K, Ouerdane L, Lobinski R, Briat JF, Lebrun M, Czernic P (2006) Root-to-shoot long-distance circulation of nicotianamine and nicotianamine-nickel chelates in the metal hyperaccumulator Thlaspi caerulescens. J. Exp. Bot. 57, 4111–4122.
Markesteijn L, Poorter L, Paz H, Sack L, Bongers F (2011) Ecological differentiation in xylem cavitation is associated with stem and leaf structural traits. Plant Cell Environ. 34, 137–148.
Marschner H (1995) Mineral Nutrition of Higher Plants. Academic Press, London.
Martin A, Adam H, Diaz-Mendoza M, Zurczak M, Gonzalez-Schain ND, Suarez-Lopez P (2009) Graft-transmissible induction of potato tuberization by the microRNA miR172. Development 136, 2873– 2881.
Martin AC, del Pozo J, Iglesias J, Rubio V, Solano R, de La Pena A, Leyva A, Paz-Ares J (2000) In?uence of cytokinins on the ex- M pression of phosphate starvation responsive genes in Arabidopsis. Plant J. 24, 559–567.
Mathieu J, Warthmann N, Kuttner F, Schmid M (2007) Export of FT protein from phloem companion cells is suf?cient for ?oral induction in Arabidopsis. Curr. Biol. 17, 1055–1060.
Matsubayashi Y, Sakagami Y (2006) Peptide hormones in plants. Annu Rev. Plant Biol. 57, 649–674.
Matsumoto-Kitano M, Kusumoto T, Tarkowski P, Kinoshita- Tsujimura K, Vaclav′?kova′ K, Miyawaki K, Kakimoto T (2008) ′ Cytokinins are central regulators of cambial activity. Proc. Natl. Acad. Sci. USA 105, 20027–20031.
Matte Risopatron JP, Sun Y, Jones BJ (2010) The vascular cambium: Molecular control of cellular structure. Protoplasma 247, 145–161.
Mattsson J, Ckurshumova W, Berleth T (2003) Auxin signaling in Arabidopsis leaf vascular development. Plant Physiol. 131, 1327– 1339.
Mayr S, Sperry JS (2010) Freeze-thaw induced embolism in Pinus contorta: Centrifuge experiments validate the “thaw-expansion”hypothesis but con?ict with ultrasonic data. New Phytol. 18, 1016–1024.
Mayr S, Zublasing V (2010) Ultrasonic emissions from conifer xylem exposed to repeated freezing. Plant Physiol. 167, 34–40.
Mayzlish-Gati E, De-Cuyper C, Goormachtig S, Beeckman T, Vuyl- steke M, Brewer PB, Beveridge CA, Yermiyahu U, Kaplan Y, Enzer Y, Wininger S, Resnick N, Cohen M, Kapulnik Y, Koltai H (2012) Strigolactones are involved in root response to low phosphate conditions in Arabidopsis. Plant Physiol. 160, 1329– 1341.
McAdam SAM, Brodribb TJ (2012) Stomatal innovation and the rise of seed plants. Ecol. Lett. 15, 1–8.
McCarthy RL, Zhong R, Ye ZH (2009) MYB83 is a direct target of SND1 and acts redundantly with MYB46 in the regulation of sec- ondary cell wall biosynthesis in Arabidopsis. Plant Cell Physiol. 50, 1950–1964.
McConnell JR, Barton MK (1998) Leaf polarity and meristem formation in Arabidopsis. Development 125, 2935–2942.
McConnell JR, Emery J, Eshed Y, Bao N, Bowman J, Barton MK (2001) Role of PHABULOSA and PHAVOLUTA in determining radial patterning in shoots. Nature 411, 709–713.
McNear DH Jr, Chaney RL, Sparks DL (2010) The hyperaccumula- tor Alyssum murale uses complexation with nitrogen and oxygen donor ligands for Ni transport and storage. Phytochemistry 71,188–200.
Meinzer FC, Goldstein G, Jackson P, Holbrook NM, Gutierrez MV, Cavelier J (1995) Environmental and physiological regu- lation of transpiration in tropical forest gap species: The in?u- ence of boundary layer and hydraulic properties. Oecologia 101, 514–522.
Melnyk CW, Molnar A, Baulcombe DC (2011) Intercellular and systemic movement of RNA silencing signals. EMBO J. 30, 3553– 3563.
Mencuccini M, Holtta¨ T (2010) The signi?cance of phloem transport ¨ for the speed with which canopy photosynthesis and belowground respiration are linked. New Phytol. 185, 189–203.
Mercury L, Tardy Y (2001) Negative pressure of stretched liquid water. Geochemistry of soil capillaries. Geochem. Cosmochem. Acta 65, 3391–3408.
Mijovilovich A, Leitenmaier B, Meyer-Klaucke W, Kroneck PMH, Gotz B, Kupper H (2009) Complexation and toxicity of copper in ¨ higher plants. II. Different mechanisms for copper versus cadmium detoxi?cation in the copper-sensitive cadmium/zinc hyperaccumu- lator Thlaspi caerulescens (Ganges ecotype). Plant Physiol. 151, 715–731.
Milburn JA, Kallarackal J (1989) Physiological aspects of phloem translocation. In: Baker DA, Milburn JA, eds. Transport of Photoas- similates. Lonhman Scienti?c & Technical, Essex. pp. 262–305.
Milioni D, Sado PE, Stacey NJ, Roberts K, McCann MC (2002) Early gene expression associated with the commitment and differentiation of a plant tracheary element is revealed by cDNA-ampli?ed fragment length polymorphism analysis. Plant Cell 14, 2813–2824.
Mills RF, Krijgert GC, Baccarini PJ, Hall JL, Williams LE (2003) Functional expression of AtHMA4, a P1B-type ATPase of the Zn/Co/Cd/Pb subclass. Plant J. 35, 164–176.
Mills RF, Francini A, Ferreira Da Rocha PSC, Baccarini PJ, Aylett M, Krijger GC, Williams LE (2005) The plant P1B-type ATPase AtHMA4 transports Zn and Cd and plays a role in detoxi?cation of transition metals supplied at elevated levels. FEBS Lett. 579, 783–791.
Minchin PEH, Thorpe MR (1983) A rate of cooling response in phloem translocation. J. Exp. Bot. 34, 529–536.
Mira H, Mart′?nez-Garc′?a F, Penarrubia L (2001) Evidence for the ? plant-speci?c intercellular transport of the Arabidopsis copper chap- erone CCH. Plant J. 25, 521–528.
Mishina TE, Zeier J (2006) The Arabidopsis ?avin-dependent monooxygenase FMO1 is an essential component of biologically induced systemic acquired resistance. Plant Physiol. 141, 1666– 1675.
Mishler BD, Churchill SP (1984) A cladistic approach to the phylogeny of the “bryophytes.” Brittonia 36, 406–424.
Misra NB, Varshini YP (1961) Viscosity-temperature relation to solu- tions. J. Chem. Eng. Data 6, 194–196.
Mitsuda N, Seki M, Shinozaki K, Ohme-Takagi M (2005) The NAC transcription factors NST1 and NST2 of Arabidopsis regulate sec- ondary wall thickenings and are required for anther dehiscence.Plant Cell 17, 2993–3006.
Mitsuda N, Iwas A, Yamamoto H, Yoshida M, Seki M, Shinozaki K, Ohme-Takagi M (2007) NAC transcription factors, NST1 and NST3, are key regulators of the formation of secondary walls in woody tissues of Arabidopsis. Plant Cell 19, 270–280.
Mittelheuser CJ, Van Steveninck RFM (1969) Stomatal closure and inhibition of transpiration induced by (RS)-abscisic acid. Nature 221, 281–282.
Miwa H, Betsuyaku S, Iwamoto K, Kinoshita A, Fukuda H, Sawa S (2008) The receptor-like kinase SOL2 mediates CLE signaling in Arabidopsis. Plant Cell Physiol. 49, 1752–1757.
Miwa K, Fujiwara T (2010) Boron transport in plants: Co-ordinated regulation of transporters. Ann. Bot. 105, 1103–1108.
Miyashima S, Nakajima K (2011) The root endodermis: A hub of developmental signals and nutrient ?ow. Plant Signal. Behav. 6, 1954–1958.
Miyashima S, Koi S, Hashimoto T, Nakajima K (2011) Non-cell- autonomous microRNA165 acts in a dose-dependent manner to regulate multiple differentiation status in the Arabidopsis root. De- velopment 138, 2303–2313.
Miyashima S, Sebastian J, Lee JY, Helariutta Y (2012) Stem cel function during plant vascular development. EMBO J. 32, 178–193
Miyazawa H, Oka-Kira E, Sato N, Takahashi H, Wu GJ, Sato S, Hayashi M, Betsuyaku S, Nakazono M, Tabata S, Harada K, Sawa S, Fukuda H, Kawaguchi M (2010) The receptor-like kinase KLAVIER mediates systemic regulation of nodulation and non- symbiotic shoot development in Lotus japonicus. Development 137, 4317–4325.
Moeder W, Pozo OD, Navarre DA, Martin GB, Klessig DF (2007) Aconitase plays a role in regulating resistance to oxidative stress and cell death in Arabidopsis and Nicotiana benthamiana. Plant Mol. Biol. 63, 273–287.
Mok DW, Mok MC (2001) Cytokinin metabolism and action. Annu. Rev. Plant Physiol. Plant Mol. Biol. 52, 89–118.
Molders W, Buchala A, Metraux J-P (1996) Transport of salicylic acid in tobacco necrosis virus-infected cucumber plants. Plant Physiol. 112, 787–792.
Molnar A, Melnyk CW, Bassett A, Hardcastle TJ, Dunn R, Baulcombe DC (2010) Small silencing RNAs in plants are mobile and direct epigenetic modi?cation in recipient cells. Science 328, 872–875.
Moreno-Risueno MA, Van Norman JM, Moreno A, Zhang JY, Ahnert SE, Benfey PN (2010) Oscillating gene expression determines competence for periodic Arabidopsis root branching. Science 329, 1306–1311.
Morrissey J, Baxter IR, Lee J, Li L, Lahner B, Grotz N, Kaplan J, Salt DE, Guerinot ML (2009) The ferroportin metal ef?ux proteins function in iron and cobalt homeostasis in Arabidopsis. Plant Cell 21, 3326–3338.
Mosher RA, Durrant WE, Wang D, Song J, Dong X (2006) A com- prehensive structure-function analysis of Arabidopsis SNI1 de?nes essential regions and transcriptional supppressor activity. Plant Cell 18, 1750–1765.
Mosher RA, Schwach F, Studhollme D, Baulcombe DC (2008) PolIVb in?uences RNA-directed DNA-methylation independently of its role in siRNA biogenesis. Proc. Natl. Acad. Sci USA 105, 3145– 3150.
Motose H, Sugiyama M, Fukuda H (2004) A proteoglycan mediates inductive interaction during plant vascular development. Nature 429, 873–878.
Mott KA, Peak D (2011) Alternative perspective on the control of transpiration by radiation. Proc. Natl. Acad. Sci. USA 108, 19820– 19823.
Mou Z, Fan W, Dong X (2003) Inducers of plant systemic acquired resistance regulate NPR1 function through redox changes. Cell 113, 935–944.
Mullendore DL, Windt CW, Van As H, Knoblauch M (2010) Sieve tube geometry in relation to phloem ?ow. Plant Cell 22, 579– 593.
Muller R, Bleckmann A, Simon R (2008) The receptor kinase ¨ CORYNE of Arabidopsis transmits the stem cell-limiting signal CLAVATA3 independently of CLAVATA1. Plant Cell 20, 934–946.
Munch E (1930) Material Flow in Plants. Translated 2003 by Milburn ¨ JA and Kreeb KH, University of Bremen, Germany. Gustav Fischer Verlag, Jena Germany.
Muniz L, Minguet EG, Singh SK, Pesquet E, Vera-Sirera F, Moreau- ? Courtois CL, Carbonell J, Blazquez MA, Tuominen H (2008) ′ ACAULIS5 controls Arabidopsis xylem speci?cation through the prevention of premature cell death. Development 135, 2573– 2582.
Murphy A, Taiz L (1997) Correlation between potassium ef?ux and copper sensitivity in 10 Arabidopsis ecotypes. New Phytol. 136, 211–222.
Nagahashi G, Douds DD (2000) Partial separation of root exudate components and their effects upon the growth of germinated spores of AM fungi. Mycol Res. 104, 1453–1464.
Nagawa S, Sawa S, Sato S, Kato T, Tabata S, Fukuda H (2006) Gene trapping in Arabidopsis reveals genes involved in vascular development. Plant Cell Physiol. 47, 1394–1405.
Naik SN, Goud VV, Rout PK, Dalai AK (2010) Production of ?rst and second generation biofuels: A comprehensive review. Renew. Sust. Energ. Rev. 14, 578–597.
Napoli C (1996) Highly branched phenotype of the petunia dad1-1 mutant is reversed by grafting. Plant Physiol. 111, 27–37.
Nardini A, LoGullo MA, Salleo S (2011a) Re?lling embolized xylem conduits: Is it a matter of phloem unloading? Plant Sci. 180, 604– 611.
Nardini A, Salleo S, Jansen S (2011b) More than just a vulnerable pipeline: Xylem physiology in the light of ion-mediated regulation of plant water transport. J. Exp. Bot. 62, 4701–4718.
Nawrath C, Heck S, Parinthawong N, Metraux JP (2002) EDS5, ′ an essential component of salicylic acid-dependent signaling for disease resistance in Arabidopsis, is a member of the MATE transporter family. Plant Cell 14, 275–286.
Neale DB, Kremer A (2011) Forest tree genomics: Growing resources and applications. Nat. Rev. Genet. 12, 111–122.
Nelson T, Dengler N (1997) Leaf vascular pattern formation. Plant Cell 9, 1121–1135.
Niggeweg R, Thurow C, Weigel R, P?tzner U, Gatz C (2000) Tobacco TGA factors differ with respect to interaction with NPR1, activation potential and DNA-binding properties. Plant Mol. Biol. 42, 775–788.
Nilsson J, Karlberg A, Antti H, Lopez-Vernaza M, Mellerowicz E, Perrot-Rechenmann C, Sandberg G, Bhalerao RP (2008) Dissecting the molecular basis of the regulation of wood formation by auxin in hybrid aspen. Plant Cell 20, 843–855.
Nishiyama R, Kato M, Nagata S, Yanagisawa S, Yoneyama T (2012) Identi?cation of Zn-nicotianamine and Fe-2 -deoxymugineic acid in the phloem sap from rice plants (Oryza sativa L.). Plant Cell Physiol. 53, 381–390.
Notaguchi M, Abe M, Kimura T, Daimon Y, Kobayashi T, Yamaguchi A, Tomita Y, Dohi K, Mori M, Araki T (2008) Long-distance, graft- transmissible action of Arabidopsis FLOWERING LOCUS T protein to promote ?owering. Plant Cell Physiol. 49, 1645–1658.
Notaguchi M, Wolf S, Lucas WJ (2012) Phloem-mobile Aux/IAA transcripts target to the root tip and modify root architecture. J. Integr. Plant Biol. 54, 760–772.
Oda Y, Fukuda H (2012a) How xylem cells design wood cell walls: Secondary cell wall patterning by microtubule-associated proteins. Curr. Opin. Plant Biol. 15, 38–44.
Oda Y, Fukuda H (2012b) Initiation of cell wall pattern by a Rho- and microtubule-driven symmetry breaking. Science 337, 11333–11336.
Oda Y, Hasezawa S (2006) Cytoskeletal organization during xylem cell differentiation. J. Plant Res. 119, 167–177.
Oda Y, Iida Y, Kondo Y, Fukuda H (2010) Wood cell-wall structure requires local 2D-microtubule disassembly by a novel plasma membrane-anchored protein. Curr. Biol. 20, 1197–1202.
Oda Y, Mimura T, Hasezawa S (2005) Regulation of secondary cell wall development by cortical microtubules during tracheary element differentiation in Arabidopsis cell suspensions. Plant Physiol. 137, 1027–1036.
Oertli JJ (1993) The mobility of boron in plants. Plant Soil 155, 301– 304.
Ohashi-Ito K, Fukuda H (2003) HD-zip III homeobox genes that include a novel member, ZeHB-13 (Zinnia)/ATHB-15 (Arabidopsis), are involved in procambium and xylem cell differentiation. Plant Cell Physiol. 44, 1350–1358.
Ohashi-Ito K, Oda Y, Fukuda H (2010) Arabidopsis VASCULAR- RELATED NAC-DOMAIN6 directly regulates the genes that govern programmed cell death and secondary wall formation during xylem differentiation. Plant Cell 22, 3461–3473.
Oka-Kira E, Tateno K, Miura K-I, Haga T, Hayashi M, Harada K, Sato S, Tabata S, Shikazono N, Tanaka A, Watanabe Y, Fukuhara I, Nagata T, Kawaguchi M (2005) klavier (klv), A novel hypernodulation mutant of Lotus japonicus affected in vascular tissue organization and ?oral induction. Plant J. 44, 505–515.
Okamoto S, Ohnishi E, Sato S, Takahashi H, Nakazono M, Tabata S, Kawaguchi M (2009) Nod factor/nitrate-induced CLE genes that drive HAR1-mediated systemic regulation of nodulation. Plant Cell Physiol. 50, 67–77.
Omid A, Keilin T, Glass A, Leshkowitz D, Wolf S (2007) Character- ization of phloem-sap transcription pro?le in melon plants. J. Exp. Bot. 58, 3645–3656.
Oren R, Sperry JS, Katul GG, Pataki DE, Ewers BE, Phillips N, Schafer KVR (1999) Survey and synthesis of intra- and interspeci?c variation in stomatal sensitivity to vapour pressure de?cit. Plant Cell Environ. 22, 1515–1526.
Orlando DA, Brady SM, Fink TM, Benfey PN, Ahnert SE (2010) Detecting separate time scales in genetic expression data. BMC Genomics 11, 381.
Oross JW, Lucas WJ (1985) Sugar-beet petiole structure – vascular anastomoses and phloem ultrastructure. Can. J. Bot. 63, 2295–2304.
Osipova MA, Mortier V, Demchenko KN, Tsyganov VE, Tikhonovich IA, Lutova LA, Dolgikh EA, Goormachtig S (2012) Wuschel-related homeobox5 gene expression and interaction of CLE peptides with components of the systemic control add two pieces to the puzzle of autoregulation of nodulation. Plant Physiol. 158, 1329–1341.
Ouerdane L, Mari S, Czernic P, Lebrun M, ?obinski R (2006)′ Speciation of non-covalent nickel species in plant tissue extracts by electrospray Q-TOFMS/MS after their isolation by 2D size exclusion-hydrophilic interaction LC (SEC-HILIC) monitored by ICP- MS. J. Anal. At. Spec. 21, 676–683.
Palauqui JC, Elmayan T, deBorne FD, Crete P, Charles C, Vaucheret H (1996) Frequencies, timing, and spatial patterns of co- suppression of nitrate reductase and nitrite reductase in transgenic tobacco plants. Plant Physiol. 112, 1447–1456.
Palauqui JC, Elmayan T, Pollien JM, Vaucheret H (1997) Systemic acquired silencing: Transgene-speci?c post-transcriptional silenc- ing is transmitted by grafting from silenced stocks to non-silenced scions. EMBO J. 16, 4738–4745.
Pallas JA, Paiva NL, Lamb C, Dixon RA (1996) Tobacco plants epi- genetically suppressed in phenylalanine ammonia-lyase expression do not develop systemic acquired resistance in response to infection by tobacco mosaic virus. Plant J. 10, 281–293.
Pant BD, Buhtz A, Kehr J, Scheible WR (2008) MicroRNA399 is a long-distance signal for the regulation of plant phosphate home- ostasis. Plant J. 53, 731–738.
Parizot B, Laplaze L, Ricaud L, Boucheron-Dubuisson E, Bayle V, Bonke M, De Smet I, Poethig SR, Helariutta Y, Haseloff J, Chriqui D, Beeckman T, Nussaume L (2008) Diarch symmetry of the vascular bundle in Arabidopsis root encompasses the pericycle and is re?ected in distich lateral root initiation. Plant Physiol. 146, 140–148.
Park M, Li Q, Shcheynikov N, Zeng W, Muallem S (2004) NaBC1 is a ubiquitous electrogenic Na+-coupled borate transporter essential for cellular boron homeostasis and cell growth and proliferation. Mol. Cell 16, 331–341.
Park SW, Kaimoyo E, Kumar D, Mosher S, Klessig D (2007) Methyl salicylate is a critical mobile signal for plant systemic acquired resistance. Science 318, 113–116.
Park SW, Liu PP, Forouhar F, Vlot AC, Tong L, Tietjen K, Klessig D (2009) Use of a synthetic salicylic acid analog to investigate the roles of methyl salicylate and its esterases in plant disease resistance. J. Biol. Chem. 284, 7307–7317.
Parker J, Holub E, Frost L, Falk A, Gunn N, Daniels M (1996) Characterization of eds1, a mutation in Arabidopsis suppressing resistance to Peronospora parasitica speci?ed by several different RPP genes. Plant Cell 8, 2033–2046.
Passioura JB, Ashford AE (1974) Rapid translocation in the phloem of wheat roots. Aust. J. Plant Physiol. 1, 521–527.
Peguero-Pina JS, Alquezar-Alquezar JM, Mayr S, Cochard H, Gil- Pelegrin D (2011) Embolism induced by winter drought in Pinus sylvestris L.: A possible reason for dieback near its southern distribution limit? Ann. For. Sci. 38, 565–574.
Peleg-Grossman S, Golani Y, Kaye Y, Melamed-Book N, Levine A (2009) NPR1 protein regulates pathogenic and symbiotic inter- actions between Rhizobium and legumes and non-legumes. PLoS ONE 4, e8399.
Perez-Alfocea F, Ghanem ME, Gomez-Cadenas A, Dodd IC (2011) ′ ′ Omics of root-to-shoot signaling under salt stress and water de?cit. OMIC 15, 893–901.
Pesacreta TC, Groom LH, Rials TG (2005) Atomic force microscopy of the intervessel pit membrane in the stem of Sapium sebiferum (Euphorbiaceae). IAWA J. 26, 397–426.
Pesquet E, Ranocha P, Legay S, Digonnet C, Barbier O, Pichon M, Goffner D (2005) Novel markers of xylogenesis in zinnia are differentially regulated by auxin and cytokinin. Plant Physiol. 139, 1821–1839.
Pesquet E, Korolev AV, Calder G, Lloyd CW (2010) The microtubule- associated protein AtMAP70–5 regulates secondary wall patterning in Arabidopsis wood cells. Curr. Biol. 20, 744–749.
Petra′sek J, Mravec J, Bouchard R, Blakeslee JJ, Abas M, Seifer- ˇ tova D, Wisniewska J, Tadele Z, Kubes M, Covanova M, Dhonukshe P, Skupa P, Benkova E, Perry L, Krecek P, Lee OR, Fink GR, Geisler M, Murphy AS, Luschnig C, Zazimalova E, Friml J (2006) PIN proteins perform a rate-limiting function in cellular auxin ef?ux. Science 312, 914–918.
Petra′sek J, Friml J (2009) Auxin transport routes in plant development. ˇ Development 136, 2675–2688.
Petty JA (1972) The aspiration of bordered pits in conifer wood. Proc. R. Soc. Ser. B. Biol. Sci. 181, 395–406.
Petty JA, Preston RD (1969) The dimensions and number of pit membrane pores in conifer wood. Proc. R. Soc. Ser. B. Biol. Sci. 172, 137–151.
Peuke AD, Windt C, van As H (2006) Effects of cold girdling on ?ows in the transport phloem in Ricinus communis: Is mass ?ow inhibited? Plant Cell Environ. 29, 15–25.
Pich A, Scholz G (1996) Translocation of copper and other mi- cronutrients in tomato plants (Lycopersicon esculentum Mill.): Nicotianamine-stimulated copper transport in the xylem. J. Exp. Bot. 47, 41–47.
Pich A, Scholz G, Stephan U (1994) Iron-dependent changes of heavy-metals, nicotianamine, and citrate in different plant or- gans and in the xylem exudate of 2 tomato genotypes. Nico- tianamine as possible copper translocator. Plant Soil 165, 189– 196.
Pickard WF (1981) The ascent of sap in plants. Progr. Biophys. Mol. Biol. 37, 181–229.
Pieruschka R, Huber G, Berry JA (2010) Control of transpiration by radiation. Proc. Natl. Acad. Sci. USA 107, 13372–13377.
Piquemal J, LaPierre C, Myton K, O’Connel A, Schuch W, Grima- Pettenati J, Boudet AM (1998) Down-regulation of cinnamoyl-CoA reductase induces signi?cant changes of lignin pro?les in transgenic tobacco plants. Plant J. 13, 71–83.
Pires ND, Dolan L (2012) Morphological evolution in land plants: New designs with old genes. Phil Trans. R. Soc. 367, 508–518.
Pittermann J (2010) The evolution of water transport in plants: An integrated approach. Goebiology 8, 112–139.
Pittermann J, Sperry JS (2003) Tracheid diameter is the key trait determining extent of freezing-induced cavitation in conifers. Tree Physiol. 23, 907–914.
Pittermann J, Sperry JS (2006) Analysis of freeze-thaw embolism in conifers: The interaction between cavitation pressure and tracheid size. Plant Physiol. 140, 374–382.
Pittermann J, Sperry JS, Hacke UG, Wheeler JK, Sikkema EH (2005) Torus-margo pits help conifers compete with angiosperms. Science310, 1924.
Pittermann J, Sperry JS, Hacke UG, Wheeler JK, Sikkema EH (2006a) Inter-tracheid pitting and the hydraulic ef?ciency of conifer wood: The role of tracheid allometry and cavitation protection. Am. J. Bot. 93, 1105–1113.
Pittermann J, Sperry JS, Wheeler JK, Hacke UG, Sikkema EH (2006b) Mechanical reinforcement of tracheids compromises the hydraulic ef?ciency of conifer xylem. Plant Cell Environ. 29, 1618– 1628.
Plaut JA, Yepez EA, Hill J, Pangle R, Sperry JS, Pockman WT, McDowell NG (2012) Hydraulic limits preceeding mortality in a pinon-juniper woodland under experimental drought. Plant Cell Environ. 35, 1601–1617.
Pockman WT, Sperry JS (1997) Freezing-induced xylem cavitation and the northern limit of Larrea tridentata. Oecologia 109, 19–27.
Poirier Y, Thoma S, Somerville C, Schiefelbein J (1991) Mutant of Arabidopsis de?cient in xylem loading of phosphate. Plant Physiol. 97, 1087–1093.
Pommerrenig B, Papini-Terzi FS, Sauer N (2007) Differential regu- lation of sorbitol and sucrose loading into the phloem of Plantago major in response to salt stress. Plant Physiol. 144, 1029–1038.
Pressel S, Ligrone R, Duckett JG (2006) Effects of de- and rehydration on food-conducting cells in the moss Polytrichum formosum: A cytological study. Ann. Bot. 98, 67–76.
Prigge MJ, Clark SE (2006) Evolution of the Class III HDd-ZIP gene family in land plants. Evol. Dev. 8, 350–361.
Prigge MJ, Otsuga D, Alonso JM, Ecker JR, Drews GN, Clark SE (2005) Class III homeodomain-leucine zipper gene family members have overlapping, antagonistic, and distinct roles in Arabidopsis development. Plant Cell 17, 61–76.
Pritchard J (1996) Aphid stylectomy reveals an osmotic step between sieve tube, cortical cells in barley roots. J. Exp. Bot. 47, 1519– 1524.
Pritchard J, Tomos AD, Farrar JF, Minchin PEH, Gould N, Paul MJ, MacRae EA, Ferrier RA, Gray DW, Thorpe MR (2004) Turgor, solute import, growth in maize roots treated with galactose. Funct. Plant Biol. 31, 1095–1103.
Puig S, Penarrubia L (2009) Placing metal micronutrients in context: Transport and distribution in plants. Curr. Op. Plant Biol. 12, 299– 306.
Pyo H, Demura T, Fukuda H (2007) TERE; a novel cis-element respon- sible for a coordinated expression of genes related to programmed cell death and secondary wall formation during differentiation of tracheary elements. Plant J. 51, 955–965.
Rahayu YS, Walch-Liu P, Neumann G, Romheld V, von Wiren N, ¨ Bangerth F (2005) Root-derived cytokinins as long-distance signals for NO?-induced stimulation of leaf growth. J. Exp. Bot. 56, 1143– 3 1152.
Ransom-Hodgkins WD, Vaughn MW, Bush DR (2003) Protein phos- phorylation plays a key role in sucrose-mediated transcriptional regulation of a phloem-speci?c proton-sucrose symporter. Planta 217, 483–489.
Raridan GJ, Delaney TP (2002) Role of salicylic acid and NIM1/NPR1 in race-speci?c resistance in Arabidopsis. Genetics 161, 803–811.
Raven JA (1991) Long-term functioning of enucleate sieve elements - possible mechanisms of damage avoidance and damage repair. Plant Cell Environ. 14, 139–146.
Raven JA (2003) Long-distance transport in non-vascular plants. Plant Cell Environ. 26, 73–85.
Reid DE, Ferguson BJ, Gresshoff PM (2011) Inoculation- and nitrate- induced CLE peptides of soybean control NARK-dependent nodule formation. Mol. Plant-Microbe Interact. 24, 606–618.
Reinhardt D, Mandel T, Kuhlemeier C (2000) Auxin regulates the initiation and radial position of plant lateral organs. Plant Cell 12, 507–518.
Reinhardt D, Pesce ER, Stieger P, Mandel T, Baltensperger K, Bennett M, Traas J, Friml J, Kuhlemeier C (2003) Regulation of phyllotaxis by polar auxin transport. Nature 426, 255–260.
Rellan-Alvarez R, Abad′?a J, Alvarez-Fernandez A (2008) Formation ′ ′ ′ ′ of metal-nicotianamine complexes as affected by pH, ligand ex- change with citrate and metal exchange. A study by electrospray ionization time-of-?ight mass spectrometry. Rapid Commun. Mass Sp. 22, 1553–1562.
Rellan-Alvarez R, Giner-Mart′?nez-Sierra J, Orduna J, Orera I, ′ ′ Rodr′?guez-Castrillon JA, Garc′?a-Alonso JI, Abad′?a J, Alvarez- ′ ′ Fernandez A (2010) Identi?cation of a tri-iron(III), tri-citrate complex ′ in the xylem sap of iron-de?cient tomato resupplied with iron: New insights into plant iron long-distance transport. Plant Cell Physiol. 51, 91–102.
Rennie EA, Turgeon R (2009) A comprehensive picture of phloem loading strategies. Proc. Natl. Acad. Sci. USA 106, 14162–14167.
Riesen O, Feller U (2005) Redistribution of nickel, cobalt, manganese, zinc, and cadmium via the phloem in young and maturing wheat. J. Plant Nutr. 28, 421–430.
Roberts MR, Paul ND (2006) Seduced by the dark side: Integrating molecular and ecological perspectives on the in?uence of light on plant defense against pests and pathogens. New Phytol. 170, 677– 699.
Robischon M, Du J, Miura E, Groover A (2011) The Populus Class III HD ZIP, popREVOLUTA, in?uences cambium initia- tion and patterning of woody stems. Plant Physiol. 155, 1214– 1225.
Rodriguez-Medina C, Atkins CA, Mann AJ, Jordan ME, Smith PMC (2011) Macromolecular composition of phloem exudate from white lupin (Lupinus albus L.). BMC Plant Biol. 11, 36.
Rogers EE, Ausubel FM (1997) Arabidopsis enhanced disease sus- ceptibility mutants exhibit enhanced susceptibility to several bacte- rial pathogens and alterations in PR-1 gene expression. Plant Cell 9, 305–316.
Roney JK, Khatibi PA, Westwood JH (2007) Cross-species translo- cation of mRNA from host plants into the parasitic plant dodder. Plant Physiol. 143, 1037–1043.
Rosche E, Blackmore D, Tegeder M, Richardson T, Schroeder H, Higgins TJV, Frommer WB, Of?er CE, Patrick JW (2002)Seed-speci?c expression of a potato sucrose transporter increasessucrose uptake, growth rates of developing pea cotyledons. PlantJ. 30, 165–175.
Roschzttardtz H, Seguela-Arnaud M, Briat J, Vert G, Curie C (2011) ′ ′ The FRD3 citrate ef?uxer promotes iron nutrition between symplas- tically disconnected tissues throughout Arabidopsis development. Plant Cell 23, 2725–2737.
Rothwell GW, Lev-Yadun S (2005) Evidence of polar auxin ?ow in 375 million-year-old fossil wood. Am. J. Bot. 92, 903–906.
Rouached H, Stefanovic A, Secco D, Bulak Arpat A, Gout E, Bligny R, Poirier Y (2011) Uncoupling phosphate de?ciency from its major effects on growth and transcriptome via PHO1 expression in Arabidopsis. Plant J. 65, 557–570.
Rueffer M, Steipe B, Zenk MH (1995) Evidence against speci?c binding of salicylic acid to plant catalase. FEBS Lett. 377, 175–180.
Ruffel S, Krouk G, Ristova D, Shasha D, Birnbaum KD, Coruzzi GM (2011) Nitrogen economics of root foraging: Transitive closure of the nitrate-cytokinin relay and distinct systemic signaling for N supply vs. demand. Proc. Natl. Acad. Sci. USA 108, 18524–18529.
Ruiz-Medrano R, Xoconostle-Cazares B, Lucas WJ (1999) Phloem ′ long-distance transport of CmNACP mRNA: Implications for supra- cellular regulation in plants. Development 126, 4405–4419.
Ruszala EM, Beerling DJ, Franks PJ, Chater C, Casson SA, Gray JE, Hetherington AM (2011) Land plants acquired active stomatal control early in their evolutionary history. Curr. Biol. 21, 1030–1035.
Ruyter-Spira C, Al-Babili S, van der Krol S, Bouwmeester H (2012) The biology of strigolactones. Trends Plant Sci. 12, 1360–1385.
Ryals J, Weymann K, Lawton K, Friedrich L, Ellis D, Steiner H- Y, Johnson J, Delaney TP, Jesse T, Vos P, Uknes S (1997) The Arabidopsis NIM1 protein shows homology to the mammalian transcription factor inhibitor IκB. Plant Cell 9, 425–439.
Sachs T (1981) The control of patterned differentiation of vascular tissues. Adv. Bot. Res. 9, 152–262.
Sachs T (1991) Pattern Formation in Plants. Cambridge University Press, Cambridge UK.
Salim E, Ullsten O (1999) Our forests our future. Report of the World Commission on Forests and Sustainable Development, Cambridge University Press, Cambridge UK.
Salleo S, Lo Gullo MA, De Paoli D, Zippo M (1996) Xylem recovery from cavitation-induced embolism in young plants of Laurus nobilis: A possible mechanism. New Phytol. 132, 47–56.
Salleo S, Tri?lo P, Esposito S, Nardini A, LoGullo MA (2009) Starch- to-sugar conversion in wood parenchyma of ?eld-growing Laurus nobilis plants: A component of the signal pathway for embolism repair? Funct. Plant Biol. 36, 815–825.
Salleo S, Tri?lo P, LoGullo MA (2006) Phloem as a possible major determinant of rapid cavitation reversal in Laurus nobilis (laurel). Funct. Plant Biol. 33, 1063–1074.
Salt DE, Prince RC, Baker AJM, Raskin I, Pickering IJ (1999) Zinc ligands in the metal hyperaccumulator Thlaspi caerulescens as determined using x-ray absorption spectroscopy. Environ. Sci. Technol. 33, 713–717.
Sannigrahi P, Ragauskas AJ, Tuskan GA (2010) Poplar as a feed- stock for biofuels: A review of compositional characteristics. Biofuels Bioprod. Bioref. 4, 209–226.
Sasaki T, Chino M, Hayashi H, Fujiwara T (1998) Detection of several mRNA species in rice phloem sap. Plant Cell Physiol. 39, 895–897.
Sawa S, Ito T, Shimura Y, Okada K (1999) Filamentous ?ower controls the formation and development of Arabidopsis in?orescences and ?oral meristems. Plant Cell 11, 69–86.
Sawchuck T, Head P, Donner TJ, Scarpella E (2007) Time-lapse imaging of Arabidopsis leaf development shows dynamic patterns of procambium formation. New Phytol. 176, 560–571.
Sawchuk MG, Donner TJ, Scarpella E (2008) Auxin transport- dependent, stage-speci?c dynamics of leaf vein formation. Plant Signal. Behav. 3, 286–289.
Scarpella E, Barkoulas M, Tsiantis M (2010) Control of leaf and vein development by auxin. Cold Spring Harb. Perspect. Biol. 2, a001511.
Scarpella E, Francis P, Berleth T (2004) Stage-speci?c markers de?ne early steps of procambium development in Arabidopsis leaves and correlate termination of vein formation with mesophyll differentiation. Development 131, 3445–3455.
Scarpella E, Helariutta Y (2010) Vascular pattern formation in plants. Curr. Op. Dev. Biol. 91, 221–265.
Scarpella E, Marcos D, Friml JA, Berleth T (2006) Control of leaf ? vascular patterning by polar auxin transport. Genes Dev. 20, 1015– 1027.
Scarpella E, Meijer AH (2004) Pattern formation in the vascular system of monocot and dicot plant species. New Phytol. 164, 209–242.
Schaaf G, Schikora A, Haberle J, Vert G, Ludewig U, Briat J, Curie C, von Wiren N (2005) A putative function for the Arabidopsis ′ Fe-phytosiderophore transporter homolog AtYSL2 in Fe and Zn homeostasis. Plant Cell Physiol. 46, 762–774.
Schachtman DP, Goodger JQD (2008) Chemical root to shoot signal- ing under drought. Trends Plant Sci. 6, 281–287.
Schaumloffel D, Ouerdane L, Bouyssiere B, ?obinski R (2003) ¨ ′ Speciation analysis of nickel in the latex of a hyperaccumulating tree Sebertia acuminata by HPLC and CZE with ICP MS and electrospray MS-MS detection. J. Anal. At. Spect. 18, 120–127.
Schenk PM, Kazan K, Wilson I, Anderson JP, Richmond T, Somerville SC, Manners JM (2000) Coordinated plant defense responses in Arabidopsis revealed by microarray analysis. Proc. Natl. Acad. Sci. USA 97, 11655–11660.
Scheres B (2010) Developmental biology: Roots respond to an inner calling. Nature 465, 299–300.
Scheres B, Di Laurenzio L, Willemsen V, Hauser MT, Janmaat K, Weisbeek P, Benfey PN (1995) Mutations affecting the radial organisation of the Arabidopsis root display speci?c defects through- out the embryonic axis. Development 121, 53–62.
Schlereth A, Moller B, Liu W, Kientz M, Flipse J, Rademacher EH, Schmid M, Jurgens G, Weijers D (2010) MONOPTEROS controls embryonic root initiation by regulating a mobile transcription factor. Nature 464, 913–916.
Schlesinger WH (1997) Biogeochemistry. Academic Press, San Diego.
Schrader J, Baba K, May ST, Palme K, Bennett M, Bhalerao RP, Sandberg G (2003) Polar auxin transport in the wood-forming tissues of hybrid aspen is under simultaneous control of develop- mental and environmental signals. Proc. Natl. Acad. Sci. USA 100, 10096–10101.
Schreiber SG, Hacke UG, Hamann A, Thomas BR (2011) Genetic variation of hydraulic and wood anatomical traits in hybrid poplar and trembling aspen. New Phytol. 190, 150–160.
Schuetz M, Berleth T, Mattsson J (2008) Multiple MONOPTEROS- dependent pathways are involved in leaf initiation. Plant Physiol. 148, 870–880.
Schuler M, Lehmann M, Fink-Straube C, Bauer P (2010) The interaction of NAS genes and FRD3 in the long-distance transport of iron in Arabidopsis thaliana. 15th International Symposium on Iron Nutrition and Interactions in Plants. Budapest, Hungary.
Schulz A (1992) Living sieve cells of conifers as visualized by confocal, laser-scanning ?uorescence microscopy. Protoplasma 166, 153– 164.
Searle IR, Men AE, Laniya TS, Buzas DM, Iturbe-Ormaetxe I, Carroll BJ, Gresshoff PM (2003) Long-distance signaling in nodulation directed by a CLAVATA1-like receptor kinase. Science 299, 109– 112.
Secchi F, Zwieniecki MA (2010) Patterns of PIP gene expression in Populus trichocarpa during recovery from xylem embolism suggest a major role for the PIP1 aquaporin subfamily as moderators of the re?lling process. Plant Cell Environ. 33, 1285–1297.
Sevanto S, Holbrook NM, Ball MC (2012) Freeze/thaw-induced em- bolism: Probability of critical bubble formation depends on speed of ice formation. Plant Sci. 3, 1–12.
Shah J, Tsui F, Klessig DF (1997) Characterization of a salicylic acid-insensitive mutant (sai1) of Arabidopsis thaliana identi?ed in a selective screen utilizing the SA-inducible expression of the tms2 gene. Mol. Plant-Microbe Interact. 10, 69–78.
Shah J, Kachroo P, Nandi A, Klessig D (2001) A recessive mutation in the Arabidopsis ssi2 gene confers SA- and NPR1-independent expression of PR genes and resistance against bacterial and oomycete pathogens. Plant J. 25, 563–574. S
Shalit A, Rozman A, Goldshmidt A, Alvarez JP, Bowman JL, Eshed Y, Lifschitz E (2009) The ?owering hormone ?origen functions as a general systemic regulator of growth and termination. Proc. Natl. Acad. Sci. USA 106, 8392–8397.
Shapiro AD, Zhang C (2001) The role of NDR1 in avirulence gene- directed signaling and control of programmed cell death in Ara- bidopsis. Plant Physiol. 127, 1089–1101.
Sharp RG, Davies WJ (2009) Variability among species in the apoplas- tic pH signalling response to drying soils. J. Exp. Bot. 60, 4363– 4370.
Shulaev V, Leon J, Raskin I (1995) Is salicylic-acid a translocated signal of systemic acquired-resistance in tobacco. Plant Cell 7, 1691–1701.
Shulaev V, Silverman P, Raskin I (1997) Airborne signaling by methyl salicylate in plant pathogen resistance. Nature 385, 718–721.
Sieburth LE (1999) Auxin is required for leaf vein pattern in Arabidop- sis. Plant Physiol. 121, 1179–1190.
Sieburth LE, Lee DK (2010) BYPASS1: How a tiny mutant tells a big story about root-to-shoot signaling. J. Integr. Plant Biol. 52, 77–85.
Sinclair SA, Sherson SM, Jarvis R, Camakaris J, Cobbett CS (2007) The use of the zinc-?uorophore, Zinpyr-1, in the study of zinchomeostasis in Arabidopsis roots. New Phytol. 174, 39–45.
Slaymaker DH, Navarre DA, Clark D, Pozo OD, Martin GB, Klessig DF (2002) The tobacco salicylic acid-binding protein 3 (SABP3) is the chloroplast carbonic anhydrase, which exhibits antioxidant activity and plays a role in the hypersensitive defense response. Proc. Natl. Acad. Sci. USA 99, 11640–11645.
Smith AM, Stitt M (2007) Coordination of carbon supply and plant growth. Plant Cell Environ. 30, 1126–1149.
Smith JAC, Milburn JA (1980a) Osmoregulation, the control of phloem-sap composition in Ricinus communis. Planta 148, 28–34.
Smith JAC, Milburn JA. (1980b) Phloem turgor, the regulation of sucrose loading in Ricinus communis. Planta 148, 42–48.
Snow R (1935) Activation of cambial growth by pure hormones. New Phytol. 34, 347–360.
Song JT, Koo YJ, Seo HK, Kim MC, CHoi YD, Kim JH (2008) Overexpression of AtSGT1, an Arabidopsis salicylic acid gluco- syltransferase, leads to increased susceptibility to Pseudomonas syringae. Phytochemistry 69, 1128–1134.
Song JT, Lu H, Greenberg JT (2004b) Divergent roles in Arabidopsis thaliana development and defense of two homologous genes, aber- rant growth and death 2 and AGD2-LIKE DEFENSE RESPONSE PROTEIN 1, encoding novel aminotransferases. Plant Cell 16, 353– 366.
Song JT, Lu H, McDowell JM, Greenberg JT (2004a) A key role for ALD1 in activation of local and systemic defenses in Arabidopsis. Plant J. 40, 200–212.
Soyano T, Thitamadee S, Machida Y, Chua NH (2008) ASYMMETRIC LEAVES2-LIKE19/LATERAL ORGAN BOUNDARIES DOMAIN30 and ASL20/LBD18 regulate tracheary element differentiation in Arabidopsis. Plant Cell 20, 3359–3373.
Sperotto RA, Boff T, Duarte GL, Santos LS, Grusak MA, Fett JP (2010) Identi?cation of putative target genes to manipulate Fe and Zn concentrations in rice grains. J. Plant Physiol. 167, 1500– 1506.
Sperotto RA, Ricachenevsky FK, Waldow VA, Fett JP (2012) Iron bioforti?cation in rice: It’s a long way to the top. Plant Sci. 190, 24–39.
Sperry JS (1993) Winter xylem embolism and spring recovery in Betula cordifolia, Fagus grandifolia, Abies balsamea, and Picea rubens. In: Borghetti M, Grace J, Raschi A, eds. Water Transport in Plants under Climatic Stress. Cambridge University Press, Cambridge. pp. 86–98.
Sperry JS (2000) Hydraulic constraints on plant gas exchange. Ag. For. Meteorol. 2831, 1–11.
Sperry JS (2003) Evolution of water transport and xylem structure. Int. J. Plant Sci. 164, S115–S127.
Sperry JS (2011) Hydraulics of vascular water transport In: P. W, ed. Mechanical integration of plant cells and plants. Springer-Verlag Berlin. pp. 303–327.
Sperry JS, Christman MA, Smith DD (2012) Vulnerability curves by centrifugation: Is there an open vessel artifact, and are “r” shapedcurves necessarily invalid? Plant Cell Environ. 35, 601–610.
Sperry JS, Hacke UG, Oren R, Comstock JP (2002) Water de?cits and hydraulic limits to leaf water supply. Plant Cell Environ. 25, 251–263.
Sperry JS, Holbrook NM, Zimmermann MH, Tyree MT (1987) Spring ?lling of xylem vessels in wild grapevine. Plant Physiol. 83, 414–417.
Sperry JS, Tyree MT (1988) Mechanism of water stress-induced xylem embolism. Plant Physiol. 88, 581–587.
Sperry JS, Tyree MT (1990) Water-stress-induced xylem embolism in three species of conifers. Plant Cell Environ. 13, 427–436.
Spicer R, Groover A (2010) The evolution of development of the vascular cambium and secondary growth. New Phytol. 186, 577– 592.
Spoel SH, Dong X (2008) Making sense of hormone cross talk during plant immune response. Cell Host Microbe 3, 348–351.
Spoel SH, Dong X (2012) How do plants achieve immunity? De- fence without specialized immune cell. Nat. Rev. Immunol. 12, 89–100.
Spoel SH, Mou Z, Tada Y, Spivey NW, Genshik P, Dong X (2009) Proteasome-mediated turnover of the transcription coacti- vator NPR1 plays dual roles in regulating plant immunity. Cell 137, 860–872.
Stacey MG, Patel A, McClain WE, Mathieu M, Remley M, Rogers EE, Gassmann W, Blevins DG, Stacey G (2008) The Arabidopsis AtOPT3 protein functions in metal homeostasis and movement of iron to developing seeds. Plant Physiol. 146, 589–601.
Stadler R, Wright KM, Lauterbach C, Amon G, Gahrtz M, Feuerstein A, Oparka KJ, Sauer N (2005) Expression of GFP-fusions in Arabidopsis companion cells reveals non-speci?c protein traf?cking into sieve elements, identi?es a novel post-phloem domain in roots. Plant J. 41, 319–331.
Staehelin C, Xie ZP, Illana A, Vierheilig H (2011) Long-distance transport of signals during symbiosis: Are nodule formation and mycorrhization autoregulated in a similar way? Plant Signal. Behav. 6, 372–377.
Stefanovic A, Ribot C, Rouached H, Wang Y, Chong J, Belbahri L, Delessert S, Poirier Y (2007) Members of the PHO1 gene family show limited functional redundancy in phosphate transfer to the shoot, and are regulated by phosphate de?ciency via distinct pathways. Plant J. 50, 982–994.
Stiller V, La?tte HR, Sperry JS (2005) Embolized conduits of rice (Oryza sativa L.) re?ll despite negative xylem pressure. Am. J. Bot. 92, 1970–1974.
Stiller V, Sperry JS (2002) Cavitation fatigue and its reversal in intact sun?ower plants. J. Exp. Bot. 53, 1155–1161.
Strawn MA, Marr SK, Inoue K, Inada N, Zubieta C, Wildermuth MC (2007) Arabidopsis isochorismate synthase functional in pathogen- induced salicylate biosynthesis exhibits properties consistent with a role in diverse stress responses. J. Biol. Chem. 282, 5919– 5933.
Street N, Jansson S, Hvidsten T (2011) A systems biology model of the regulatory network in populus leaves reveals interacting regulators and conserved regulation. BMC Plant Biol. 11, 13.
Suer S, Agusti J, Sanchez P, Schwarz M, Greb T (2011) WOX4 imparts auxin responsiveness to cambium cells in Arabidopsis. Plant Cell 23, 3247–3259.
Sussex IM (1954) Experiments on the cause of dorsiventrality in leaves. Nature 167, 651–652.
Svistoonoff S, Creff A, Reymond M, Sigoillot-Claude C, Ricaud L, Blanchet A, Nussaume L, Desnos T (2007) Root tip contact with low-phosphate media reprograms plant root architecture. Nat. Genet. 39, 792–796.
Sweetlove LJ, Kossmann J, Riesmeier JW, Riesmeier JW, Trethewey RN, Hill SA (1998) The control of source to sink carbon ?ux during tuber development in potato. Plant J. 15, 697–706.
Tada Y, Spoel SH, Pajerowska-Muhktar K, Mou Z, Song J, Wang C, Zuo J, Dong, X (2008) Plant immunity requires conformational changes of NPR1 via S-nitrosylation and thoredoxins. Science 321, 952–956.
Takahashi H, Miller J, Nozaki Y, Takeda M, Shah J, Hase S, Ikegami M, Ehara Y, Dinesh-Kumar SP (2002) RCY1, an Ara- bidopsis thaliana RPP8/HRT family resistance gene, conferring resistance to cucumber mosaic virus requires salicylic acid, ethylene and a novel signal transduction mechanism. Plant J. 32, 655– 667.
Takahashi M, Terada Y, Nakai I, Nakanishi H, Yoshimura E, Mori S, Nishizawa N (2003) Role of nicotianamine in the intracellular delivery of metals and plant reproductive development. Plant Cell 15, 1263–1280.
Takano J, Miwa K, Fujiwara T (2008) Boron transport mechanisms: Collaboration of channels and transporters. Trends Plant Sci. 13, 451–457.
Takano J, Noguchi K, Yasumori M, Kobayashi M, Gajdos Z, Miwa K, Hayashi H, Yoneyama T, Fujiwara T (2002) Arabidopsis boron transporter for xylem loading. Nature 420, 337–340.
Takano J, Yamagami M, Noguchi K, Hayashi H, Fujiwara T (2001) Preferential translocation of boron to young leaves in Arabidopsis thaliana regulated by the BOR1 gene. Soil Sci. Plant Nutr. 47, 345– 357.
Takei K, Takahashi T, Sugiyama T, Yamaya T, Sakakibara H (2002) Multiple routes communicating nitrogen availability from roots to shoots: A signal transduction pathway mediated by cytokinin. J. Exp. Bot. 53, 971–977.
Talke IN, Hanikenne M, Kramer U (2006) Zinc-dependent global ¨ transcriptional control, transcriptional deregulation, and higher gene copy number for genes in metal homeostasis of the hyperaccumu- lator Arabidopsis halleri. Plant Physiol. 142, 148–167.
Tamaki S, Matsuo S, Wong HL, Yokoi S, Shimamoto K (2007) Hd3a protein is a mobile ?owering signal in rice. Science 316, 1033–1036.
Tan Q, Zhang L, Grant J, Cooper P, Tegeder M (2010) Altered phloem transport of S-methylmethionine affects plant metabolism, seed number in pea plants. Plant Physiol. 154, 1886–1896.
Tanaka M, Wallace IS, Takano J, Roberts DM, Fujiwara T (2008) NIP6;1 is a boric acid channel for preferential transport of boron to growing shoot tissues in Arabidopsis. Plant Cell 20, 2860–2875.
Taoka KI, Ham BK, Xoconostle-Cazares B, Rojas MR, Lucas WJ ′ (2007) Reciprocal phosphorylation and glycosylation recognition motifs control NCAPPl interaction with pumpkin phloem proteins and their cell-to-cell movement. Plant Cell 19, 1866–1884.
Teo G, Suzuki Y, Uratsu SL, Lamoinen B, Ormonde N, Hu WK, DeJong TM, Dandekar AM (2006) Silencing leaf sorbitol synthesis alters long-distance partitioning and apple fruit quality. Proc. Natl.Acad. Sci. USA 103, 18842–18847.
Thibaud MC, Arrighi JF, Bayle V, Chiarenza S, Creff A, Bustos R, Paz-Ares J, Poirier Y, Nussaume L (2010) Dissection of local and systemic transcriptional responses to phosphate starvation in Arabidopsis. Plant J. 64, 775–789.
Thomas RJ (1972) Bordered pit aspiration in angiosperms. Wood Fiber 3, 236–237.
Thompson AJ, Mulholland BJ, Jackson AC, McKee JM, Hilton HW, Symonds RC, Sonneveld T, Burbidge A, Stevenson P, Taylor IB (2007) Regulation and manipulation of ABA biosynthesis in roots. Plant Cell Environ. 1, 67–78.
Thompson MV (2006) Phloem: The long, the short of it. Trends Plant Sci. 11, 26–32.
Thompson MV, Wolniak SM (2008) A plasma membrane-anchored ?uorescent protein fusion illuminates sieve element plasma mem- branes in Arabidopsis, tobacco. Plant Physiol. 146, 1599–1610.
To JP, Deruere J, Maxwell BB, Morris VF, Hutchison CE, Ferreira ` FJ, Schaller GE, Kieber JJ (2007) Cytokinin regulates type-A Arabidopsis Response Regulator activity and protein stability via two-component phosphorelay. Plant Cell 19, 3901–3914.
To JP, Haberer G, Ferreira FJ, Deruere J, Mason MG, Schaller ` GE, Alonso JM, Ecker JR, Kieber JJ (2004) Type-A Arabidopsis response regulators are partially redundant negative regulators of cytokinin signaling. Plant Cell 16, 658–671.
Tomatsu H, Takano J, Takahashi H, Watanabe-Takahashi A, Shiba- gaki N, Fujiwara T (2007) An Arabidopsis thaliana high-af?nity molybdate transporter required for ef?cient uptake of molybdate from soil. Proc. Natl. Acad. Sci USA 104, 18807–18812.
Trampczynska A, Kupper H, Meyer-Klaucke W, Schmidt H, ¨ Clemens S (2010) Nicotianamine forms complexes with Zn(ii) in vivo. Metallomics 2, 57–66.
Truernit E, Bauby H, Dubreucq B, Grandjean O, Runions J, Barthelemy J, Palauqui JC (2008) High-resolution whole-mount imaging of three-dimensional tissue organization and gene expres- sion enables the study of phloem development and structure in Arabidopsis. Plant Cell 20, 1494–1503.
Truernit E, Bauby H, Belcram K, Barthelemy J, Palauqui JC (2012) OCTOPUS, a polarly localised membrane-associated protein, reg- ulates phloem differentiation entry in Arabidopsis thaliana. Devel- opment 139, 1306–1315.
Truman W, Bennett MH, Turnbull CGN, Grant MR (2010) Arabidopsis auxin mutants are compromised in systemic acquired resistance and exhibit aberrant accumulation of various indolic compounds. Plant Physiol. 152, 1562–1573.
Truman W, Bennett MH, Kubigsteltig I, Turnbull C, Grant M (2007) Arabidopsis systemic immunity uses conserved defense signaling pathways and is mediated by jasmonates. Proc. Natl. Acad. Sci. USA 104, 1075–1080.
Tsukamoto T, Nakanishi H, Uchida H, Watanabe S, Matsuhashi S, Mori S, Nishizawa NK (2009) 52Fe translocation in barley as monitored by a positron-emitting tracer imaging system (PETIS): Evidence for the direct translocation of Fe from roots to young leaves via phloem. Plant Cell Physiol. 50, 48–57.
Tudela D, Primo-Millo E (1992) 1-Aminocyclopropane-1-carboxylic acid transported from roots to shoots promotes leaf abscission in cleopatra mandarin (Citrus reshni Hort. ex Tan.) seedlings rehy- drated after water stress. Plant Physiol. 100, 131–137.
Tuominen H, Puech L, Fink S, Sundberg B (1997) A radial concen- tration gradient of indole-3-acetic acid is related to secondary xylem development in hybrid aspen. Plant Physiol. 115, 577–585.
Turgeon R (2010a) The role of phloem loading reconsidered. Plant Physiol. 152, 1817–1823.
Turgeon R (2010b) The puzzle of phloem pressure. Plant Physiol. 154, 578–581.
Turgeon R, Wolfe S (2009) Phloem transport: Cellular pathways, molecular traf?cking. Annu. Rev. Plant Biol. 60, 207–221.
Turnbull CGN, Booker JP, Leyser HMO (2002) Micrografting tech- niques for testing long-distance signalling in Arabidopsis. Plant J. 32, 255–262.
Turner S, Gallois P, Brown D (2007) Tracheary element differentia- tion. Annu. Rev. Plant Biol. 58, 407–433.
Tuskan GA, Difazio S, Jansson S, Bohlmann J, Grigoriev I, Hellsten U, Putnam N, Ralph S, Rombauts S, Salamov A, Schein J, Sterck L, Aerts A, Bhalerao RR, Bhalerao RP, Blaudez D, Boerjan W, Brun A, Brunner A, Busov V, Campbell M, Carlson J, Chalot M, Chapman J, Chen GL, Cooper D, Coutinho PM, Couturier J, Covert S, Cronk Q, Cunningham R, Davis J, Degroeve S, Dejardin A, Depamphilis C, Detter J, Dirks B, Dubchak ′ I, Duplessis S, Ehlting J, Ellis B, Gendler K, Goodstein D, Gribskov M, Grimwood J, Groover A, Gunter L, Hamberger B, Heinze B, Helariutta Y, Henrissat B, Holligan D, Holt R, Huang W, Islam-Faridi N, Jones S, Jones-Rhoades M, Jorgensen R, Joshi C, Kangasjarvi J, Karlsson J, Kelleher C, Kirkpatrick ¨ R, Kirst M, Kohler A, Kalluri U, Larimer F, Leebens-Mack J, Leple′ JC, Locascio P, Lou Y, Lucas S, Martin F, Montanini B, Napoli C, Nelson DR, Nelson C, Nieminen K, Nilsson O, Pereda V, Peter G, Philippe R, Pilate G, Poliakov A, Razumovskaya J, Richardson P, Rinaldi C, Ritland K, Rouze′ P, Ryaboy D,
Schmutz J, Schrader J, Segerman B, Shin H, Siddiqui A, SterkyF, Terry A, Tsai CJ, Uberbacher E, Unneberg P, Vahala J, Wall K,Wessler S, Yang G, Yin T,Douglas C, Marra M, Sandberg G, Vande Peer Y, Rokhsar D (2006) The genome of black cottonwood,Populus trichocarpa (Torr. & Gray). Science 313, 1596–1604.
Twumasi P, Iakimova ET, Qian T, van Ieperen W, Schel JH, Emons AM, van Kooten O, Woltering EJ (2010) Caspase inhibitors affect the kinetics and dimensions of tracheary elements in xy- logenic Zinnia (Zinnia elegans) cell cultures. BMC Plant Biol. 10, 162.
Tyree MT, Sperry JS (1988) Do woody plants operate near the point of catastrophic xylem dysfunction caused by dynamic water stress? Answers from a model. Plant Physiol. 88, 574–580.
Tyree MT, Sperry JS (1989) Vulnerability of xylem to cavitation and embolism. Annu. Rev. Plant Physiol. Plant Mol. Biol. 40, 19–38.
Tyree MT, Zimmermann MH (2002) Xylem Structure and the Ascent of Sap. Springer, Berlin.
Uggla C, Moritz T, Sandberg G, Sundberg B (1996) Auxin as a positional signal in pattern formation in plants. Proc. Natl. Acad. Sci. USA 93, 9282–9286.
Umehara M, Hanada A, Yoshida S, Akiyama K, Arite T, Takeda- Kamiya N, Magome H, Kamiya Y, Shirasu K, Yoneyama K, Kyozuka J, Yamaguchi S (2008) Inhibition of shoot branching by V new terpenoid plant hormones. Nature 455, 195–200.
Umehara M, Hanada A, Magome H, Takeda-Kamiya N, Yamaguchi S (2010) Contribution of strigolactones to the inhibition of tiller bud outgrowth under phosphate de?ciency in rice. Plant Cell Physiol. 51, 1118–1126.
Vacchina V, Mari S, Czernic P, Marques L, Pianelli K, Schaumloffel ` ¨ D, Lebrun M, ?obinski R (2003) Speciation of nickel in a hy-peraccumulating plant by high-performance liquid chromatography- inductively coupled plasma mass spectrometry and electrospray MS/MS assisted by cloning using yeast complementation. Anal. Chem. 75, 2740–2745.
van Bel AJE (2003) The phloem, a miracle of ingenuity. Plant Cell Environ. 26, 125–149.
van Bel AJE, Hafke JB (2005) Physicochemical determinants of phloem transport. In: Holbrook NM, Zwieniecki M, eds. Vascular Transport in Plants. Elsevier, Amsterdam. pp. 19–44.
van de Mortel JE, Villanueva LA, Schat H, Kwekkeboom J, Cough- lan S, Moerland PD, van Themaat EVL, Koornneef M, Aarts MGM (2006) Large expression differences in genes for iron and zinc homeostasis, stress response, and lignin biosynthesis distinguish roots of Arabidopsis thaliana and the related metal hyperaccumula- tor Thlaspi caerulescens. Plant Physiol. 142, 1127–1147.
van der Biezen EA, Freddie CT, Kahn K, Parker JE, Jones JDG (2002) Arabidopsis RPP4 is a member of the RPP5 multi- gene family of TIR-NB-LRR genes and confers downy mildew resistance through multiple signalling components. Plant J. 29, 439– 451.
Van Doorn W, Beers E, Dangl J, Franklin-Tong V, Gallois P, Hara- Nishimura I, Jones A, Kawai-Yamada M, Lam E, Mundy J(2011a) Morphological classi?cation of plant cell deaths. Cell DeathDiffer. 18, 1241–1246.
Van Doorn WG, Hiemstra T, Fanourakis D (2011b) Hydrogel regu- lation of xylem ?ow: An alternative hypothesis. Plant Physiol. 157, 1642–1649.
Van Goor BJ, Wiersma D (1976) Chemical forms of manganese and zinc in phloem exudate. Physiol. Plant. 36, 213–216.
Van Hoof NALM, Hassinen VH, Hakvoort HWJ, Ballintijn KF, Schat H, Verkleij JAC, Ernst WHO, Karenlampi SO, Tervahauta AI (2001) Enhanced copper tolerance in Silene vulgaris (Moench) Garcke populations from copper mines is associated with increased transcript levels of a 2b-type metallothionein gene. Plant Physiol. 126, 1519–1526.
Van Iepeeren W (2007) Ion-mediated changes of xylem hydraulic conductivity in planta: Fact or ?ction? Trends Plant Sci. 12, 137– 142.
Van Iepeeren W, Van Gelder A (2006) Ion-mediated ?ow changes suppressed by minimal calcium presence in Chrysanthemum and Prunus laurocerasus. J. Exp. Bot. 57, 2743–2750.
Van Norman JM, Frederick RL, Sieburth LE (2004) BYPASS1 nega- tively regulates a root-derived signal that controls plant architecture. Curr. Biol. 14, 1739–1746.
Van Norman JM, Sieburth LE (2007) Dissecting the biosynthetic pathway for the bypass1 root-derived signal. Plant J. 49, 619–628.
Van Wees SCM, De Swart EAM, Van Pelt JA, Van Loon LC, Pieterse CMJ (2000) Enhancement of induced disease resistance by simultaneous activation of salicylate- and jasmonate-dependent defense pathways in Arabidopsis thaliana. Proc. Natl. Acad. Sci. USA 97, 8711–8716.
Vanneste S, Coppens F, Lee E, Donner TJ, Xie Z, Van Isterdael G, Dhondt S, De Winter F, De Rybel B, Vuylsteke M, De Veylder L, Friml J, Inze D, Grotewold E, Scarpella E, Sack F, Beemster GT, Beeckman T (2011) Developmental regulation of CYCA2s contributes to tissue-speci?c proliferation in Arabidopsis. EMBO J. 30, 3430–3441.
Vaten A, Dettmer J, Wu S, Stierhof YD, Miyashima S, Yadav SR, ′ Roberts CJ, Campilho A, Bulone V, Lichtenberger R, Lehes- ranta S, Mahonen AP, Kim JY, Jokitalo E, Sauer N, Scheres B, ¨ ¨ Nakajima K, Carlsbecker A, Gallagher KL, Helariutta Y (2011) Callose biosynthesis regulates symplastic traf?cking during root development. Dev. Cell 21, 1144–1155.
Venugopal SC, Jeong RD, Zhu S, Chandra-Shekara AC, Navarre D, Kachroo A, Kachroo P (2009) ENHANCED DISEASE SUSCEP- TIBILITY 1 and salicylic acid act redundantly to regulate resistance gene expression and low oleate-induced defense signaling. PLoS Genetics 5, e1000545.
Vera-Sirera F, Minguet EG, Singh SK, Ljung K, Tuominen HCL, Blazquez MA, Carbonell J (2010) Role of polyamines in plant vascular development. Plant Physiol. Biochem. 48, 534–539.
Verbruggen N, Hermans C, Schat H (2009) Molecular mechanisms of metal hyperaccumulation in plants. New Phytol. 181, 759– 776.
Vercammen D, van de Cotte B, De Jaeger G, Eeckhout D, Casteels P, Vandepoele K, Vandenberghe I, Van Beeumen J, Inze′ D, Van Breusegem F (2004) Type II metacaspases Atmc4 and Atmc9 of Arabidopsis thaliana cleave substrates after arginine and lysine. J. Biol. Chem. 279, 45329–45336.
Verma DP, Hong Z (2001) Plant callose synthase complexes. Plant Mol. Biol. 47, 693–701.
Vernooij B, Friedrich L, Morse A, Reist R, Kolditz-Jawhar R, Ward E, Uknes S, Kessmann H, Ryals J (1994) Salicylic acid is not the translocated signal responsible for inducing systemic acquired resistance but is required in signal transduction. Plant Cell 6, 959– 965.
Verret F, Gravot A, Auroy P, Leonhardt N, David P, Nussaume L, Vavasseur A, Richaud P (2004) Overexpression of AtHMA4 enhances root-to-shoot translocation of zinc and cadmium and plant metal tolerance. FEBS Lett. 576, 306–312.
Verret F, Gravot A, Auroy P, Preveral S, Forestier C, Vavasseur A, Richaud P (2005) Heavy metal transport by AtHMA4 involves the N-terminal degenerated metal binding domain and the C-terminal His11 stretch. FEBS Lett. 579, 1515–1522.
Vierheilig H, Lerat S, Piche′ Y (2003) Systemic inhibition of arbuscular mycorrhiza development by root exudates of cucumber plants colonized by Glomus mosseae. Mycorrhiza 13, 167–170.
Vlot AC, Klessig DF, Park S-W (2008) Systemic acquired resistance: The elusive signal(s). Curr. Op. Plant Biol. 11, 436–442.
Voesenek LACJ, Jackson MB, Toebes AHW, Huibers W, Vriezen WH, Colmer TD (2003) De-submergence-induced ethylene pro- duction in Rumex palustris: Regulation and ecophysiological signif- icance. Plant J. 33, 341–352.
Voinnet O (2009) Origin, biogenesis, and activity of plant microRNAs. Cell 136, 669–687.
Voitsekhovskaja OV, Koroleva OA, Batashev DR, Knop C, Tomos AD, Gamalei YV, Heldt HW, Lohaus G (2006) Phloem loading in two Scrophulariaceae species. What can drive symplastic ?ow via plasmodesmata? Plant Physiol. 140, 383–395.
von Wiren N, Klair S, Bansal S, Briat J, Khodr H, Shioiri T, Leigh ′ R, Hider R (1999) Nicotianamine chelates both Fe-III and Fe-II. Implications for metal transport in plants. Plant Physiol. 119, 1107– 1114.
Walley JW, Rowe HC, Xiao Y, Chehab EW, Kliebenstein DJ, Wagne D, Dehesh K (2008) The chromatin remodeler SPLAYED regulate speci?c stress signaling pathways. PLoS Pathol. 4, e1000237.
Walter A, Silk WK, Schurr (2009) Environmental effects on spatial and temporal patterns of leaf and root growth. Annu. Rev. Plant Biol. 60, 279–304.
Walz C, Juenger M, Schad M, Kehr J (2002) Evidence for the presence and activity of a complete antioxidant defence system in mature sieve tubes. Plant J. 31, 189–197.
Wang D, Amornsiripanitch N, Dong X (2006) A genomic approach to identify regulatory nodes in the transcriptional network of systemic acquired resistance in plants. PLoS Pathog. 2, e123.
Wang S, Durrant WE, Song J, Spivey NW, Dong X (2010) ArabidopsisBRCA2 and RAD51 proteins are speci?cally involved in defensegene transcription during plant immune responses. Proc. Natl. Acad.Sci. USA 107, 22716–22721.
Ward ER, Uknes SJ, Williams SC, Dincher SS, Wiederhold DL, Alexander DC, Ahl-Goy P, Metraux JP, Ryals JA (1991) Coor- dinate gene activity in response to agents that induce systemic acquired resistance. Plant Cell 3, 1085–1094.
Wardlaw IF (1974) Temperature control of translocation. In: Bieleski RL, Fergupon R, Cresswell MM, eds. Mechanisms and Regulation of Plant Growth. Bull. Royal Soc., New Zealand. pp. 533–387.
Wardlaw IF (1990) The control of carbon partitioning in plants. New Phytol. 116, 341–381.
Wardlaw IF, Bagnall D (1981) Phloem transport and the regulation of growth of Sorghum bicolor (Moench) at low temperature. Plant Physiol. 68, 411–414.
Wardlaw IF, Moncur L (1976) Source, sink and control of translocation in wheat. Planta 128, 93–100.
Warmbrodt RD (1987) Solute concentrations in the phloem and apex of the root of Zea mays. Am. J. Bot. 74, 394–402.
Waters BM, Chu H, DiDonato R, Roberts L, Eisley R, Lahner B, Salt D, Walker E (2006) Mutations in Arabidopsis yellow stripe-like1 and yellow stripe-like3 reveal their roles in metal ion homeostasis and loading of metal ions in seeds. Plant Physiol. 141, 1446–1458.
Waters BM, Sankaran RP (2011) Moving micronutrients from the soil to the seeds: Genes and physiological processes from a bioforti?cation perspective. Plant Sci. 180, 562–574.
Waters BM, Uauy C, Dubcovsky J, Grusak MA (2009) Wheat (Triticum aestivum) NAM proteins regulate the translocation of iron, zinc, and nitrogen compounds from vegetative tissues to grain. J. Exp. Bot. 60, 4263–4274.
Weichert N, Saalbach I, Weichert H, Kohl S, Erban A, Kopka J, Hause B, Varshney A, Sreenivasulu N, Strickert M, Kumlehn J, Weschke W, Weber H (2010) Increasing sucrose uptake capacity of wheat grains stimulates storage protein synthesis. Plant Physiol. 152, 698–710.
Weigel D, Jurgens G (2002) Stem cells that make stems. Nature 415, ¨ 751–754.
Weir IE, Maddumage R, Allan AC, Ferguson IB (2005) Flow cytomet- ric analysis of tracheary element differentiation in Zinnia elegans cells. Cytometry A. 68, 81–91.
Wenzel CL, Schuetz M, Yu Q, Mattsson J (2007) Dynamics of MONOPTEROS and PIN-FORMED1 expression during leaf vein pattern formation in Arabidopsis thaliana. Plant J. 49, 387–398.
Werner T, Schmulling T (2009) Cytokinin action in plant development. ¨ Curr. Opin. Plant Biol. 12, 527–538.
West AG, Hultine KR, Sperry JS, Bush SE, Ehleringer JR (2008) Transpiration and hydraulic strategies in a pinyon-juniper woodland. Ecol. Appl. 18, 911–927.
Wheeler JK, Sperry JS, Hacke UG, Hoang N (2005) Inter-vessel pitting and cavitation in woody Rosaceae and other vesselled plants: A basis for a safety vs. ef?ciency trade-off in xylem transport. Plant Cell Environ. 28, 800–812.
White MC, Decker AM, Chaney RL (1981) Metal complexation in xylem ?uid: I. Chemical composition of tomato and soybean stem exudate. Plant Physiol. 67, 292–300.
Wiersma D, Van Goor BJ (1979) Chemical forms of nickel and cobalt in phloem of Riccinus communis. Physiol. Plant. 45, 440–451.
Wildermuth MC, Dewdney J, Wu G, Ausubel FM (2001) Isocho- rismate synthase is required to synthesize salicylic acid for plant defense. Nature 414, 562–571.
Williams LE, Mills RF (2005) P1B-ATPases – An ancient family of transition metal pumps with diverse functions in plants. Trends Plant Sci. 10, 491–502.
Williams LE, Pittman JK (2010) Dissecting pathways involved in manganese homeostasis and stress in higher plant cells. Plant CellMonographs 17, 95–117.
Windt CW, Vergeldt FJ, de Jager PA, van As H (2006) MRI of long- distance water transport: A comparison of the phloem and xylem ?ow characteristics and dynamics in poplar, castor bean, tomato and tobacco. Plant Cell Environ. 29, 1715–1729.
Woffenden BJ, Freeman TB, Beers EP (1998) Proteasome inhibitors prevent tracheary element differentiation in zinnia mesophyll cell cultures. Plant Physiol. 118, 419–430.
Wong CKE, Cobbett CS (2009) HMA P-type ATPases are the ma- jor mechanism for root-to-shoot Cd translocation in Arabidopsis thaliana. New Phytol. 181, 71–78.
Wu Y, Zhang D, Chu JY, Boyle P, Wang Y, Brindle ID, De Luca V, Despres C (2012) The Arabidopsis NPR1 protein is a receptor ′ for the plant defense hormone salicylic acid. Cell Rep. 28, 639– 647.
Wycisk K, Kim EJ, Schroeder JI, Kramer U (2004) Enhancing the ¨ ?rst enzymatic step in the histidine biosynthesis pathway increases the free histidine pool and nickel tolerance in Arabidopsis thaliana FEBS Lett. 578, 128–134.
Xia Y, Gao QM, Yu K, Lapchyk L, Navarre D, Hildebrand D, Kachroo A, Kachroo P (2009) An intact cuticle in distal tissues is essential for the induction of systemic acquired resistance in plants. Cell HostMicrobe 5, 151–165.
Xia Y, Yu K, Navarre D, Seebold K, Kachroo A, Kachroo, P (2010) The glabra1 mutation affects cuticle formation and plant responses to microbes. Plant Physiol. 154, 833–846.
Xie B, Wang X, Zhu M, Zhang Z, Hong Z (2011) CalS7 encodes a callose synthase responsible for callose deposition in the phloem. Plant J. 65, 1–14.
Xoconostle-Cazares B, Xiang Y, Ruiz-Medrano R, Wang HL, ′ Monzer J, Yoo BC, McFarland KC, Franceschi VR, Lucas WJ (1999) Plant paralog to viral movement protein that potentiates transport of mRNA into the phloem. Science 283, 94–98.
Yaginuma H, Hirakawa Y, Kondo Y, Ohashi-Ito K, Fukuda H (2011) A novel function of TDIF-related peptides: Promotion of axillary bud formation. Plant Cell Physiol. 52, 1354–1364.
Yamaguchi M, Kubo M, Fukuda H, Demura T (2008) Vascular-related NAC-DOMAIN7 is involved in the differentiation of all types of xylem vessels in Arabidopsis roots and shoots. Plant J. 55, 652–664.
Yamaguchi M, Mitsuda N, Ohtani M, Ohme-Takagi M, Demura T (2011) VASCULAR-RELATED NAC-DOMAIN7 directly regulates the expression of a broad range of genes for xylem vessel formation. Plant J. 66, 579–590.
Yamaguchi M, Ohtani M, Mitsuda N, Kubo M, Ohme-Takagi M, Fukuda H, Demura T (2010) VND-INTERACTING2, a NAC domain transcription factor, negatively regulates xylem vessel formation in Arabidopsis. Plant Cell 22, 1249–1263.
Yamamoto R, Demura T, Fukuda H (1997) Brassinosteroids induce entry into the ?nal stage of tracheary element differentiation in cultured zinnia cells. Plant Cell Physiol. 38, 980–983.
Yang SJ, Zhang YJ, Sun M, Goldstein G, Cao KF (2012) Recovery of diurnal depression of leaf hydraulic conductance in a subtrop- ical woody bamboo species: Embolism re?lling by nocturnal root pressure. Tree Physiol. 32, 414–422.
Yoder JI, Gunathilake P, Wu B, Tomilova N, Tomilov AA (2009) Engineering host resistance against parasitic weeds with RNA interference. Pest Manag. Sci. 65, 460–466.
Yokosho K, Yamaji N, Ma J (2010) Isolation and characterisation of two MATE genes in rye. Funct. Plant Biol. 37, 296–303.
Yokosho K, Yamaji N, Ueno D, Mitani N, Ma J-F (2009) OSFRDL1 is a citrate transporter required for ef?cient translocation of iron in rice. Plant Physiol. 149, 297–305.
Yoo BC, Kragler F, Varkonyi-Gasic E, Haywood V, Archer-Evans S, Lee YM, Lough TJ, Lucas WJ (2004) A systemic small RNA signaling system in plants. Plant Cell 16, 1979–2000.
Yoshida S, Iwamoto K, Demura T, Fukuda H (2009) Comprehensive analysis of the regulatory roles of auxin in early transdifferentiation into xylem cells. Plant Mol. Biol. 70, 457–469.
Yoshimoto K, Noutoshi Y, Hayashi K, Shirasu K, Takahashi T, Motose H (2012) A chemical biology approach reveals an opposite action between thermospermine and auxin in xylem development in Arabidopsis thaliana. Plant Cell Physiol. 53, 635–645.
Yu M, Hu CX, Wang YH (2002) Molybdenum ef?ciency in winter wheat cultivars as related to molybdenum uptake and distribution. Plant Soil 245, 287–293.
Zeevaart JAD (1976) Physiology of ?ower formation. Annu. Rev. Plant Physiol. 27, 321–348.
Zeevaart JAD (2006) Florigen coming of age after 70 years. Plant Cell18, 1783–1789.
Zhang LY, Peng YB, Pelleschi-Travier S, Fan Y, Lu YF, Lu YM, Gao XP, Shen YY, Delrot S, Zhang DP (2004) Evidence for apoplasmic phloem unloading in developing apple fruit. Plant Physiol. 135, 1– 13.
Zhang WH, Zhou Y, Dibley KE, Tyerman SD, Furbank RT, Patrick JW (2007) Nutrient loading of developing seeds. Funct. Plant Biol. 34, 314–331.
Zhang XY, Wang XL, Wang XF, Xia GH, Pan QH, Fan RC, Wu FQ, Yu XC, Zhang DP (2006) A shift of phloem unloading from symplasmic to apoplasmic pathway is involved in developmen- tal onset of ripening in grape berry. Plant Physiol. 142, 220– 232.
Zhang Y, Cheng YT, Qu N, Zhao Q, Bi D, Li X (2006) Negative reg ulation of defense response in Arabidopsis by two NPR1 paralogs Plant J. 48, 647–656.
Zhang Y, Fan W, Kinkema M, Li X, Dong X (1999) Interaction of NPR1 with basic leucine zipper protein transcription factors that bind sequences required for salicylic acid induction of the PR-1 gene. Proc. Natl. Acad. Sci. USA 96, 6523–6528.
Zhang Y, Tessaro MJ, Lassner M, Li X (2003) Knockout analysis of Arabidopsis transcription factors TGA2, TGA5, and TGA6 reveals their redundant and essential roles in systemic acquired resistance. Plant Cell 15, 2647–2653.
Zhao C, Johnson BJ, Kositsup B, Beers EP (2000) Exploiting secondary growth in Arabidopsis. Construction of xylem and bark cDNA libraries and cloning of three xylem endopeptidases. Plant Physiol. 123, 1185–1196.
Zheng Q, Durben DJ, Wolf GH, Angell CA (1991) Liquids at large negative pressures: Water at the homogeneous nucleation limit. Science 254, 829–832.
Zhong R, Demura T, Ye ZH (2006) SND1, a NAC domain transcription factor, is a key regulator of secondary wall synthesis in ?bers of Arabidopsis. Plant Cell 18, 3158–3170.
Zhong R, Lee C, Ye ZH (2010) Global analysis of direct targets of secondary wall NAC master switches in Arabidopsis. Mol. Plant 3, 1087–1103.
Zhong R, Lee C, Zhou J, McCarthy RL, Ye ZH (2008) A battery of transcription factors involved in the regulation of secondary cell wall biosynthesis in Arabidopsis. Plant Cell 20, 2763–2782.
Zhong R, Richardson EA, Ye ZH (2007) The MYB46 transcription factor is a direct target of SND1 and regulates secondary wall biosynthesis in Arabidopsis. Plant Cell 19, 2776–2792.
Zhong R, Ye ZH (2007) Regulation of cell wall biosynthesis. Curr. Opin. Plant Biol. 10, 564–572.
Zhong R, Ye ZH (1999) I?1, a gene regulating interfascicular ?ber differentiation in Arabidopsis, encodes a homeodomain-leucine zipper protein. Plant Cell 11, 2139–2152.
Zhong R, Ye ZH (2001) Alteration of auxin polar transport in th Arabidopsis i?1 mutants. Plant Physiol. 126, 549–563.
Zhou J, Lee C, Zhong R, Ye ZH (2009) MYB58 and MYB63 ar transcriptional activators of the lignin biosynthetic pathway durinsecondary cell wall formation in Arabidopsis. Plant Cell 21, 248–266.
Zhou JM, Trifa Y, Silva H, Pontier D, Lam E, Shah J, Klessig DF (2000) NPR1 differentially interacts with members of the TGA/OBF family of transcription factors that bind an element of the PR-1 gene required for induction by salicylic acid. Mol. Plant-Microbe Interact. 13, 191–202.
Zhou N, Tootle TL, Tsui F, Klessig DF, Glazebrook J (1998) PAD4 functions upstream from salicylic acid to control defense responses in Arabidopsis. Plant Cell 10, 1021–1030.
Zhou Y, Setz N, Niemietz C, Qu H, Of?er CE, Tyerman SD, Patrick JW (2007) Aquaporins and unloading of phloem-imported water in coats of developing bean seeds. Plant Cell Environ. 30, 1566– 1577.
Zhu S, Jeong RD, Venugopal SC, Lapchyk L, Navarre D, Kachroo A, Kachroo P (2011) SAG101 forms a ternary complex with EDS1 and is required for resistance signaling against turnip crinkle virus. PLoS Pathog. 7, e1002318.
Zimmermann U, Schneider H, Wegner L, Haase A (2004) Water ascent in tall trees: Does evolution of land plants rely on a highly metastable state? New Phytol. 162, 575– 615.
Zwieniecki MA, Holbrook NM (2000) Bordered pit structure and vessel wall surface properties. Implications for embolism repair. Plant Physiol. 123, 1015–1020.
Zwieniecki MA, Holbrook NM (2009) Confronting Maxwell’s demon: Biophysics of xylem embolism repair. Trends Plant Sci. 14, 530– 534.
Zwieniecki MA, Melcher PJ, Feild TS, Holbrook NM (2004) A poten- tial role for xylem-phloem interactions in the hydraulic architecture of trees: Effects of phloem girdling on xylem hydraulic conductance. Tree Physiol. 24, 911–917.
Zwieniecki MA, Melcher PJ, Holbrook NM (2001a) Hydraulic proper- ties of individual xylem vessels of Fraxinus americana. J. Exp. Bot. 52, 257–264.
Zwieniecki MA, Melcher PJ, Holbrook NM (2001b) Hydrogel con- trol of xylem hydraulic resistance in plants. Science 291, 1059– 1062.