共 64 条
Phytochrome interacting factors 4 and 5 control seedling growth in changing light conditions by directly controlling auxin signaling
被引:482
作者:
Hornitschek, Patricia
Kohnen, Markus V.
Lorrain, Severine
Rougemont, Jacques
[2
,3
]
Ljung, Karin
[4
]
Lopez-Vidriero, Irene
[5
]
Franco-Zorrilla, Jose M.
[5
]
Solano, Roberto
[5
]
Trevisan, Martine
Pradervand, Sylvain
[1
,6
]
Xenarios, Ioannis
[6
]
Fankhauser, Christian
[1
]
机构:
[1] Univ Lausanne, Fac Biol & Med, Ctr Integrat Genom, Genom Technol Facil, CH-1015 Lausanne, Switzerland
[2] Ecole Polytech Fed Lausanne, Sch Life Sci, Bioinformat & Biostat Core Facil, CH-1015 Lausanne, Switzerland
[3] Ecole Polytech Fed Lausanne, Swiss Inst Bioinformat, CH-1015 Lausanne, Switzerland
[4] Swedish Univ Agr Sci, Umea Plant Sci Ctr, SE-90183 Umea, Sweden
[5] Ctr Nacl Biotecnol Consejo Super Invest Cient, Dept Genet Mol Plantas, Madrid 28049, Spain
[6] Swiss Inst Bioinformat, Vital IT, CH-1015 Lausanne, Switzerland
基金:
瑞士国家科学基金会;
关键词:
shade avoidance;
phytochrome;
phytochrome-interacting factor;
auxin;
ChIP sequencing;
Arabidopsis thaliana;
SHADE-AVOIDANCE RESPONSES;
PROTEIN-BINDING MICROARRAYS;
BHLH TRANSCRIPTION FACTORS;
ARABIDOPSIS-THALIANA;
NEGATIVE REGULATOR;
GENOMIC ANALYSIS;
HIGH-TEMPERATURE;
CIRCADIAN CLOCK;
PLANT-GROWTH;
BIOSYNTHESIS;
D O I:
10.1111/j.1365-313X.2012.05033.x
中图分类号:
Q94 [植物学];
学科分类号:
071001 ;
摘要:
Plant growth is strongly influenced by the presence of neighbors that compete for light resources. In response to vegetational shading shade-intolerant plants such as Arabidopsis display a suite of developmental responses known as the shade-avoidance syndrome (SAS). The phytochrome B (phyB) photoreceptor is the major light sensor to mediate this adaptive response. Control of the SAS occurs in part with phyB, which controls protein abundance of phytochrome-interacting factors 4 and 5 (PIF4 and PIF5) directly. The shade-avoidance response also requires rapid biosynthesis of auxin and its transport to promote elongation growth. The identification of genome-wide PIF5-binding sites during shade avoidance revealed that this bHLH transcription factor regulates the expression of a subset of previously identified SAS genes. Moreover our study suggests that PIF4 and PIF5 regulate elongation growth by controlling directly the expression of genes that code for auxin biosynthesis and auxin signaling components.
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页码:699 / 711
页数:13
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