Receptor kinase complex transmits RALF peptide signal to inhibit root growth in Arabidopsis

被引：151

作者：

Du, Changqing ^{[1
]}

Li, Xiushan ^{[1
]}

Chen, Jia ^{[1
]}

Chen, Weijun ^{[1
]}

Li, Bin ^{[1
]}

Li, Chiyu ^{[1
]}

Wang, Long ^{[1
]}

Li, Jianglin ^{[1
]}

Zhao, Xiaoying ^{[1
]}

Lin, Jianzhong ^{[1
]}

Liu, Xuanming ^{[1
]}

Luan, Sheng ^{[1
,2
]}

Yu, Feng ^{[1
]}

机构：

[1] Hunan Univ, Hunan Key Lab Plant Funct Genom & Dev Regulat, Changsha 410082, Hunan, Peoples R China

[2] Univ Calif Berkeley, Dept Plant & Microbial Biol, Berkeley, CA 94720 USA

来源：

PROCEEDINGS OF THE NATIONAL ACADEMY OF SCIENCES OF THE UNITED STATES OF AMERICA | 2016年 / 113卷 / 51期

基金：

美国国家科学基金会; 中国国家自然科学基金;

关键词：

plant hormone; feronia; phosphorylation; CYTOPLASMIC KINASE; CELL ELONGATION; PROTEIN-KINASE; ABSCISIC-ACID; FERONIA; TRANSDUCTION; INTERACTS; PHOSPHORYLATES; FAMILY; BIK1;

D O I：

10.1073/pnas.1609626113

中图分类号：

O [数理科学和化学]; P [天文学、地球科学]; Q [生物科学]; N [自然科学总论];

学科分类号：

07 ; 0710 ; 09 ;

摘要：

A number of hormones work together to control plant cell growth. Rapid Alkalinization Factor 1 (RALF1), a plant-derived small regulatory peptide, inhibits cell elongation through suppression of rhizosphere acidification in plants. Although a receptor-like kinase, FERONIA (FER), has been shown to act as a receptor for RALF1, the signaling mechanism remains unknown. In this study, we identified a receptor-like cytoplasmic kinase (RPM1-induced protein kinase, RIPK), a plasma membrane-associated member of the RLCK-VII subfamily, that is recruited to the receptor complex through interacting with FER in response to RALF1. RALF1 triggers the phosphorylation of both FER and RIPK in a mutually dependent manner. Genetic analysis of the fer-4 and ripk mutants reveals RIPK, as well as FER, to be required for RALF1 response in roots. The RALF1-FER-RIPK interactions may thus represent a mechanism for peptide signaling in plants.

引用

页码：E8326 / E8334

页数：9

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