植物光信号转导
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摘要
植物的生长发育受到多种环境因素的影响,而光信号是其中最重要的环境信号之一。从植物的种子萌发开始到完成整个生命周期,光参与调控其中几乎每一个生长和生理发育过程。植物自身进化了一整套复杂而精细的光信号转导系统,以应对自然界中时刻变化的光环境。经过30多年的研究,植物光生物学家确定了光受体-E3泛素化连接酶复合体-转录因子为主要调控途径的光信号转导体系。这一信号转导网络控制了植物体内将近1/3基因的表达,从而在分子层面上确保植物的正常生长发育。
Light is one of the most essential environmental factors affecting plant development and growth. Throughout the entire life cycle of plants, light mediates almost every stage of developmental processes. Plants have evolved a complicated but delicate light signal transduction network in response to dynamically changing light environment in nature. Over the past three decades, plant photobiologists have revealed a light signal transduction system, photoreceptors-E3 ubiquitin ligase complex-transcription factors. This regulatory network affects approximately one third of gene expressions throughout whole genome to ensure normal development in plants.
Light is one of the most essential environmental factors affecting plant development and growth. Throughout the entire life cycle of plants, light mediates almost every stage of developmental processes. Plants have evolved a complicated but delicate light signal transduction network in response to dynamically changing light environment in nature. Over the past three decades, plant photobiologists have revealed a light signal transduction system, photoreceptors-E3 ubiquitin ligase complex-transcription factors. This regulatory network affects approximately one third of gene expressions throughout whole genome to ensure normal development in plants.
引文
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[9]HUANG X,OUYANG X,DENG X W.Beyond repression of photomorphogenesis:role switching of COP/DET/FUS in light signaling[J].Curr Opin Plant Biol,2014,21:96-103.
[10]HOECKER U.The activities of the E3 ubiquitin ligase COP1/SPA,a key repressor in light signaling[J].Curr Opin Plant Biol,2017,37:63-69.
[11]PODOLEC R,ULM R.Photoreceptor-mediated regulation of the COP1/SPA E3 ubiquitin ligase[J].Curr Opin Plant Biol,2018,45:18-25.
[12]DENG X W,CASPAR T,QUAIL P H.cop1:a regulatory locus involved in light-controlled development and gene expression in Arabidopsis[J].Genes Dev,1991,5:1172-1182.
[13]DENG X W,MATSUI M,WEI N,et al.COP1,an Arabidopsis regulatory gene,encodes a protein with both a zinc-binding motif and a G beta homologousdomain[J].Cell,1992,71:791-801.
[14]LEE J,HE K,STOLC V,et al.Analysis of transcription factor HY5genomic binding sites revealed its hierarchical role in light regulation of development[J].Plant Cell,2007,19:731-749.
[15]OSTERLUND M T,HARDTKE C S,WEI N,et al.Targeted destabilization of HY5 during light-regulated development of Arabidopsis[J].Nature,2000,405:462-466.
[16]ANG L H,DENG X W.Regulatory hierarchy of photomorphogenic loci:allele-specific and light-dependent interaction between the HY5and COP1 loci[J].Plant Cell,1994,6:613-628.
[17]XU X,PAIK I,ZHU L,et al.Illuminating progress in Phytochromemediated light signaling pathways[J].Trends Plant Sci,2015,20:641-650.
[2]C H R I S T I E J M,A R VA I A S,B A X T E R K J,e t a l.Plant UVR8 photoreceptor senses UV-B by tryptophan-mediated disruption of cross-dimer salt bridges[J].Science,2012,335:1492-1496.
[3]GALLAGHER S,SHORT T W,RAY P M,et al.Light-mediated changes in two proteins found associated with plasma membrane fractions from pea stem sections[J].Proc Natl Acad Sci USA,1988,85:8003-8007.
[4]LIN C,ROBERTSON D E,AHMAD M,et al.Association of flavin adenine dinucleotide with the Arabidopsis blue light receptor CRY1[J].Science,1995,269:968-970.
[5]GUO H,YANG H,MOCKLER T,et al.Regulation of flowering time by Arabidopsis photoreceptors[J].Science,1998,279:1360-1363.
[6]SHARROCK R A,QUAIL P H.Novel phytochrome sequences in Arabidopsis thaliana:structure,evolution,and differential expression of a plant regulatory photoreceptor family[J].Genes Dev,1989,3:1745-1757.
[7]LI J,LI G,WANG H,et al.Phytochrome signaling mechanisms[J].Arabidopsis Book,2011,9:e148.
[8]LAU O S,DENG X W.The photomorphogenic repressors COP1 and DET1:20 years later[J].Trends Plant Sci,2012,17:584-593.
[9]HUANG X,OUYANG X,DENG X W.Beyond repression of photomorphogenesis:role switching of COP/DET/FUS in light signaling[J].Curr Opin Plant Biol,2014,21:96-103.
[10]HOECKER U.The activities of the E3 ubiquitin ligase COP1/SPA,a key repressor in light signaling[J].Curr Opin Plant Biol,2017,37:63-69.
[11]PODOLEC R,ULM R.Photoreceptor-mediated regulation of the COP1/SPA E3 ubiquitin ligase[J].Curr Opin Plant Biol,2018,45:18-25.
[12]DENG X W,CASPAR T,QUAIL P H.cop1:a regulatory locus involved in light-controlled development and gene expression in Arabidopsis[J].Genes Dev,1991,5:1172-1182.
[13]DENG X W,MATSUI M,WEI N,et al.COP1,an Arabidopsis regulatory gene,encodes a protein with both a zinc-binding motif and a G beta homologousdomain[J].Cell,1992,71:791-801.
[14]LEE J,HE K,STOLC V,et al.Analysis of transcription factor HY5genomic binding sites revealed its hierarchical role in light regulation of development[J].Plant Cell,2007,19:731-749.
[15]OSTERLUND M T,HARDTKE C S,WEI N,et al.Targeted destabilization of HY5 during light-regulated development of Arabidopsis[J].Nature,2000,405:462-466.
[16]ANG L H,DENG X W.Regulatory hierarchy of photomorphogenic loci:allele-specific and light-dependent interaction between the HY5and COP1 loci[J].Plant Cell,1994,6:613-628.
[17]XU X,PAIK I,ZHU L,et al.Illuminating progress in Phytochromemediated light signaling pathways[J].Trends Plant Sci,2015,20:641-650.