Photosynthetic response of desert plants to small rainfall events in the Junggar Basin, northwest China

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• 作者：Y. Wu ; X. J. Zheng ; Y. Li
• 关键词：leaf water uptake ; photosynthetic rate ; plant functional types ; stomatal conductance ; trichome ; water ; use efficiency
• 刊名：Photosynthetica
• 出版年：2016
• 出版时间：March 2016
• 年：2016
• 卷：54
• 期：1
• 页码：3-11
• 全文大小：486 KB
• 参考文献：Asbjornsen H., Goldsmith G.R., Alvarado-Barrientos M.S. et al.: Ecohydrological advances and applications in plant-water relations research: a review. — J. Plant Ecol. 4: 3–22, 2011.CrossRef
  Bassiri Rad H., Tremmel D.C., Virginia R.A. et al.: Short-term patterns in water and nitrogen acquisition by two desert shrubs following a simulated summer rain. — Plant Ecol. 145: 27–36, 1999.CrossRef
  Boucher J.F., Munson A.D., Bernier P.Y.: Foliar absorption of dew influences shoot water potential and root growth in Pinus strobus seedlings. — Tree Physiol. 15: 819–823, 1995.CrossRef
  Breshears D.D., McDowell N.G., Goddard K.L. et al.: Foliar absorption of intercepted rainfall improves woody plant water status most during drought. — Ecology 89: 41–47, 2008.CrossRef PubMed
  Briggs J.M., Knapp A.K.: Interannual variability in primary production in tallgrass prairie: climate, soil moisture, topographic position, and fire as determinants of aboveground biomass. — Am. J. Bot. 82: 1024–1030, 1995.CrossRef
  Burgess S.S.O., Dawson T.E.: The contribution of fog to the water relations of Sequoia sempervirens (D. Don): foliar uptake and prevention of dehydration. — Plant Cell Environ. 27: 1023–1034, 2004.CrossRef
  Dougherty R.L., Lauenroth W.K., Singh J.S.: Response of a grassland cactus to frequency and size of rainfall events in a North American shortgrass steppe. — J. Ecol. 84: 177–183, 1996.CrossRef
  Fay, P.A., Carlisle J.D., Knapp A.K. et al.: Productivity responses to altered rainfall patterns in a C4-dominated grassland. — Oecologia 137: 245–251, 2003.CrossRef PubMed
  Fu Q.S., Yang R.C., Wang H.S. et al: Leaf morphological and ultrastructural performance of eggplant (Solanum melongena L.) in response to water stress. — Photosynthetica 51: 109–114, 2013.CrossRef
  Gouvra E., Grammatikopoulos G.: Beneficial effects of direct foliar water uptake on shoot water potential of five chasmophytes. — Can. J. Bot. 81: 1278–1284, 2003.CrossRef
  Grammatikopoulos G., Manetas Y.: Direct absorption of water by hairy leaves of Phlomis fruticosa and its contribution to drought avoidance. — Can. J. Bot. 72: 1805–1811, 1994.CrossRef
  Kitajima M., Butler W.L.: Quenching of chlorophyll fluorescence and primary photochemistry in chloroplasts by dibromothymoquinone. — Biochim. Biophys. Acta 376: 105–115, 1975.CrossRef PubMed
  Limm E.B., Dawson T.E.: Polystichum munitum (Dryopteridaceae) varies geographically in its capacity to absorb fog water by foliar uptake within the redwood forest ecosystem. — Am. J. Bot. 97: 1121–1128, 2010.CrossRef PubMed
  Limm E.B., Simonin K.A., Bothman A.G., Dawson T.E.: Foliar water uptake: a common water acquisition strategy for plants of the redwood forest. — Oecologia 161: 449–459, 2009.CrossRef PubMed PubMedCentral
  Liu R., Li Y., Wang Q.X.: Variations in water and CO2 fluxes over a saline desert in western China. — Hydrol. Process. 26: 513–522, 2012.CrossRef
  Loik M.E., Breshears D.D., Lauenroth W.K., Belnap J.: A multiscale perspective of water pulses in dryland ecosystems: climatology and ecohydrology of the western USA. — Oecologia 141: 269–281, 2004.CrossRef PubMed
  Ma J., Zheng X.J., Li Y.: The response of CO2 flux to rain pulses at a saline desert. — Hydrol. Process. 26: 4029–4037, 2012.CrossRef
  Martin C.E., von Willert D.J.: Leaf epidermal hydathodes and the ecophysiological consequences of foliar water uptake in species of Crassula from the Namib Desert in southern Africa. — Plant Biol. 2: 229–242, 2000.CrossRef
  Maxwell K., Johnson G.N.: Chlorophyll fluorescence-a practical guide. — J. Exp. Bot. 51: 659–668, 2000.CrossRef PubMed
  Munné-Bosch S., Alegre L.: Role of dew on the recovery of water-stressed Melissa officinalis L. plants. — J. Plant Physiol. 154: 759–766, 1999.CrossRef
  Munné-Bosch S., Nogués S., Alegre L.: Diurnal variations of photosynthesis and dew adsorption by leaves in two evergreen shrubs growing in mediterranean field conditions. — New Phytol. 144: 109–119, 1999.CrossRef
  Munné-Bosch S.: Direct foliar absorption of rainfall water and its biological significance in dryland ecosystems. — J. Arid Environ. 74: 417–418, 2010.CrossRef
  Nobel P.S.: Water relations and photosynthesis of a desert CAM plant, Agave deserti. — Plant Physiol. 58: 576–582, 1976.CrossRef PubMed PubMedCentral
  Noy-Meir I.: Desert ecosystems: Environment and producers. — Annu. Rev. Ecol. Syst. 4: 25–51, 1973.CrossRef
  Oliveira R.S., Dawson T.E., Burgess S.S.O.: Evidence for direct water absorption by the shoot of the desiccation-tolerant plant Vellozia flavicans in the savannas of Central Brazil. — J. Trop. Ecol. 21: 585–588, 2005.CrossRef
  Owens M.K., Lyons R.K., Alejandro C.L.: Rainfall partitioning within semiarid juniper communities: effects of event size and canopy cover. — Hydrol. Process. 20: 3179–3189, 2006.CrossRef
  Reynolds J.F., Kemp P.R., Ogle K., Fernández R.J.: Modifying the ‘pulse-reserve’ paradigm for deserts of North America: precipitation pulses, soil water, and plant responses. — Oecologia 141: 194–210, 2004.CrossRef PubMed
  Sala O.E., Lauenroth W.K.: Small rainfall events: an ecological role in semiarid region. — Oecologia 53: 301–304, 1982.CrossRef
  Simonin K.A., Santiago L.S., Dawson T.E.: Fog interception by Sequoia sempervirens (D. Don) crowns decouples physiology from soil water deficit. — Plant Cell Environ. 32: 882–892, 2009.CrossRef PubMed
  Tange T., Yanaga K., Osawa H., Masumori M.: Effects of evening and nighttime leaf wetting on stomatal behavior of Cryptomeria japonica growing in dry soil. — Photosynthetica 47: 313–316, 2009.CrossRef
  Wang Y.T.: [Analyzes of precipitation pattern in south of Gurbantunggut desert and response of different functional type plants to small rainfall events.] — PhD. Thesis. University of Chinese Academy of Sciences, Beijing 2009. [In Chinese]
  Wang Y.T., Tang L.S.: [Responses of different life-form plants in Gurbantunggut desert to small rainfall events.] — Chin. J. Ecol. 28: 1028–1034, 2009. [In Chinese]
  Weaver T.: Distribution of root biomass in well-drained surface soils. — Am. Midl. Nat. 107: 393–395, 1982.CrossRef
  Xu G.Q., Li Y.: [Root distribution of three desert shrubs and their response to precipitation under co-occurring conditions.] — Acta Ecol. Sin. 29: 130–137, 2009. [In Chinese]CrossRef
  Xu H., Li Y.: Water-use strategy of three central Asian desert shrubs and their responses to rain pulse events. — Plant Soil 285: 5–17, 2006.CrossRef
  Yates D.J., Hutley L.B.: Foliar uptake of water by wet leaves of Sloanea woollsii, an Australian subtropical rainforest tree. — Aust. J. Bot. 43: 157–167, 1995.CrossRef
  Zheng X.J., Wang Q.X., Liu R., Li Y.: [Dew input in saline desert ecosystem in Southeast edge of Junggar Basin.] — Prog. Nat. Sci. 19: 1175–1186, 2009. [In Chinese]
  Zheng Y.L., Feng Y.L.: [Fog water absorption by the leaves of epiphytes and non-epiphytes in Xishuangbanna.] — Chin. J. Appl. Ecol. 17: 977–981, 2006. [In Chinese]
  Zhuang Y.L., Zhao W.Z.: [Experimental study of effects of artificial dew on Bassia dasyphylla and Agriophyllum squarrosum.] — J. Desert Res. 30: 1068–1074, 2010. [In Chinese]
  
• 作者单位：Y. Wu (1) (2)
  X. J. Zheng (1)
  Y. Li (1)
  
  1. State Key Lab of Oasis and Desert Ecology, Xinjiang Institute of Ecology and Geography, Chinese Academy of Sciences, Urumqi, Xinjiang, China
  2. University of Chinese Academy of Sciences, Beijing, China
  
• 刊物类别：Biomedical and Life Sciences
• 刊物主题：Life Sciences
  Plant Physiology
  
• 出版者：Springer Netherlands
• ISSN：1573-9058

文摘

Small rainfall events (≤ 5 mm) have short intervals, but account for a large proportion of the annual rainfall frequency in arid lands. To explore possible strategies used by desert plants to utilize the small rainfall events, we investigated the photosynthetic responses of 28 species to 1 mm and 6 mm of simulated rainfall in the Junggar Basin, northwest China. The species were grouped into four plant functional types: short-life-cycle herbs, long-life-cycle herbs, non-phreatophyte shrubs, and phreatophyte shrubs. The results showed that the net photosynthetic rate, stomatal conductance, and transpiration rate increased in most of the herbs, but they responded differently to the rainfall treatments. However, the water-use efficiency did not significantly differ after 1 and 6 mm rainfall treatments in most of the shrubs. The maximum water absorption by leaves and the percentage increase of a leaf water content (LWC) were higher in the herbs than those in the shrubs. Plants with dense trichomes had the highest LWC. The results suggested that the desert plants benefited from the micro-environment humidity provided by the small rainfall events. Additional key words leaf water uptake photosynthetic rate plant functional types stomatal conductance trichome water-use efficiency