A Mitogen-Activated Protein Kinase Cascade Module, MKK3-MPK6 and MYC2, Is Involved in Blue Light-Mediated Seedling Development in Arabidopsis

被引：121

作者：

Sethi, Vishmita ^{[1
]}

Raghuram, Badmi ^{[1
]}

Sinha, Alok Krishna ^{[1
]}

Chattopadhyay, Sudip ^{[1
,2
]}

机构：

[1] Natl Inst Plant Genome Res, New Delhi 110067, India

[2] Natl Inst Technol, Dept Biotechnol, Durgapur 713209, India

来源：

PLANT CELL | 2014年 / 26卷 / 08期

关键词：

HELIX TRANSCRIPTION FACTOR; GENE-EXPRESSION; PHOTOMORPHOGENIC GROWTH; SIGNALING PATHWAYS; JAZ REPRESSORS; ABSCISIC-ACID; HIGHER-PLANTS; BZIP PROTEIN; MAP KINASE; JASMONATE;

D O I：

10.1105/tpc.114.128702

中图分类号：

Q5 [生物化学]; Q7 [分子生物学];

学科分类号：

071010 ; 081704 ;

摘要：

Mitogen-activated protein kinase (MAPK) pathways are involved in several signal transduction processes in eukaryotes. Light signal transduction pathways have been extensively studied in plants; however, the connection between MAPK and light signaling pathways is currently unknown. Here, we show that MKK3-MPK6 is activated by blue light in a MYC2-dependent manner. MPK6 physically interacts with and phosphorylates a basic helix-loop-helix transcription factor, MYC2, and is phosphorylated by a MAPK kinase, MKK3. Furthermore, MYC2 binds to the MPK6 promoter and regulates its expression in a feedback regulatory mechanism in blue light signaling. We present mutational and physiological studies that illustrate the function of the MKK3-MPK6-MYC2 module in Arabidopsis thaliana seedling development and provide a revised mechanistic view of photomorphogenesis.

引用

页码：3343 / 3357

页数：15

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