The DET1-COP1-HY5 Pathway Constitutes a Multipurpose Signaling Module Regulating Plant Photomorphogenesis and Thermomorphogenesis

被引：182

作者：

Delker, Carolin ^{[1
]}

Sonntag, Louisa ^{[1
]}

James, Geo Velikkakam ^{[2
]}

Janitza, Philipp ^{[1
]}

Ibanez, Carla ^{[1
]}

Ziermann, Henriette ^{[1
]}

Peterson, Tom ^{[1
]}

Denk, Kathrin ^{[1
]}

Mull, Steffi ^{[1
]}

Ziegler, Joerg ^{[1
]}

Davis, Seth Jon ^{[2
,3
]}

Schneeberger, Korbinian ^{[2
]}

Quint, Marcel ^{[1
]}

机构：

[1] Leibniz Inst Plant Biochem, Dept Mol Signal Proc, D-06120 Halle, Germany

[2] Max Planck Inst Plant Breeding Res, Dept Plant Dev Biol, D-50829 Cologne, Germany

[3] Univ York, Dept Biol, York YO10 5DD, N Yorkshire, England

来源：

CELL REPORTS | 2014年 / 9卷 / 06期

关键词：

BHLH TRANSCRIPTION FACTOR; HIGH-TEMPERATURE; ARABIDOPSIS-THALIANA; HYPOCOTYL ELONGATION; SEEDLING PHOTOMORPHOGENESIS; AUXIN BIOSYNTHESIS; CELL EXPANSION; PHYTOCHROME-A; SPA GENES; LIGHT;

D O I：

10.1016/j.celrep.2014.11.043

中图分类号：

Q2 [细胞生物学];

学科分类号：

071009 ; 090102 ;

摘要：

Developmental plasticity enables plants to respond to elevated ambient temperatures by adapting their shoot architecture. On the cellular level, the basic-helix-loop-helix (bHLH) transcription factor PHYTOCHROME INTERACTING FACTOR 4 (PIF4) coordinates this response by activating hormonal modules that in turn regulate growth. In addition to an unknown temperature-sensing mechanism, it is currently not understood how temperature regulates PIF4 activity. Using a forward genetic approach in Arabidopsis thaliana, we present extensive genetic evidence demonstrating that the DE-ETIOLATED 1 (DET1)-CONSTITUTIVE PHOTOMORPHOGENIC 1 (COP1)-ELONGATED HYPOCOTYL 5 (HY5)-dependent photomorphogenesis pathway transcriptionally regulates PIF4 to coordinate seedling growth in response to elevated temperature. Our findings demonstrate that two of the most prevalent environmental cues, light and temperature, share a much larger set of signaling components than previously assumed. Similar to the toolbox concept in animal embryonic patterning, multipurpose signaling modules might have evolved in plants to translate various environmental stimuli into adaptational growth processes.

引用

页码：1983 / 1989

页数：7

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