OsMPK4 promotes phosphorylation and degradation of IPA1 in response to salt stress to confer salt tolerance in rice

Meiru Jia; Nan Luo; Xiangbing Meng; Xiaoguang Song; Yanhui Jing; Liquan Kou; Guifu Liu; Xiahe Huang; Yingchun Wang; Jiayang Li; Bing Wang; Hong Yu

doi:10.1016/j.jgg.2022.06.009

OsMPK4 promotes phosphorylation and degradation of IPA1 in response to salt stress to confer salt tolerance in rice

doi: 10.1016/j.jgg.2022.06.009

a. State Key Laboratory of Plant Genomics and National Center for Plant Gene Research, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing 100101, China;
b. University of Chinese Academy of Sciences, Beijing 100049, China;
c. State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing 100101, China

基金项目:

This work was supported by the National Natural Science Foundation of China (31788103, 32122064, 32122012), the Chinese Academy of Sciences (XDA24030504, 2019099), China Agricultural Research System (CARS-01-4), and the China Postdoctoral Science Foundation (2019M650885).

详细信息

通讯作者:
Bing Wang,E-mail:bingwang@genetics.ac.cn

Hong Yu,E-mail:hyu@genetics.ac.cn

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出版历程
- 收稿日期: 2022-04-14
- 修回日期: 2022-06-20
- 录用日期: 2022-06-30
- 网络出版日期: 2023-03-17

OsMPK4 promotes phosphorylation and degradation of IPA1 in response to salt stress to confer salt tolerance in rice

a. State Key Laboratory of Plant Genomics and National Center for Plant Gene Research, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing 100101, China;
b. University of Chinese Academy of Sciences, Beijing 100049, China;
c. State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Innovation Academy for Seed Design, Chinese Academy of Sciences, Beijing 100101, China

Funds:

摘要

摘要: Salt stress adversely affects plant growth, development, and crop yield. Rice (Oryza sativa L.) is one of the most salt-sensitive cereal crops, especially at the early seedling stage. Mitogen-activated protein kinase (MAPK/MPK) cascades have been shown to play critical roles in salt response in Arabidopsis. However, the roles of the MPK cascade signaling in rice salt response and substrates of OsMPK remain largely unknown. Here, we report that the salt-induced OsMPK4-Ideal Plant Architecture 1 (IPA1) signaling pathway regulates the salt tolerance in rice. Under salt stress, OsMPK4 could interact with IPA1 and phosphorylate IPA1 at Thr180, leading to degradation of IPA1. Genetic evidence shows that IPA1 is a negative regulator of salt tolerance in rice, whereas OsMPK4 promotes salt response in an IPA1-dependent manner. Taken together, our results uncover an OsMPK4-IPA1 signal cascade that modulates the salt stress response in rice and sheds new light on the breeding of salt-tolerant rice varieties.
- Oryza sativa /
- MPK /
- OsMPK4 /
- IPA1 /
- Salt tolerance
Abstract: Salt stress adversely affects plant growth, development, and crop yield. Rice (Oryza sativa L.) is one of the most salt-sensitive cereal crops, especially at the early seedling stage. Mitogen-activated protein kinase (MAPK/MPK) cascades have been shown to play critical roles in salt response in Arabidopsis. However, the roles of the MPK cascade signaling in rice salt response and substrates of OsMPK remain largely unknown. Here, we report that the salt-induced OsMPK4-Ideal Plant Architecture 1 (IPA1) signaling pathway regulates the salt tolerance in rice. Under salt stress, OsMPK4 could interact with IPA1 and phosphorylate IPA1 at Thr180, leading to degradation of IPA1. Genetic evidence shows that IPA1 is a negative regulator of salt tolerance in rice, whereas OsMPK4 promotes salt response in an IPA1-dependent manner. Taken together, our results uncover an OsMPK4-IPA1 signal cascade that modulates the salt stress response in rice and sheds new light on the breeding of salt-tolerant rice varieties.
- Oryza sativa /
- MPK /
- OsMPK4 /
- IPA1 /
- Salt tolerance

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OsMPK4 promotes phosphorylation and degradation of IPA1 in response to salt stress to confer salt tolerance in rice

doi: 10.1016/j.jgg.2022.06.009

通讯作者:
Bing Wang,E-mail:bingwang@genetics.ac.cn

Hong Yu,E-mail:hyu@genetics.ac.cn

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OsMPK4 promotes phosphorylation and degradation of IPA1 in response to salt stress to confer salt tolerance in rice

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留言板

OsMPK4 promotes phosphorylation and degradation of IPA1 in response to salt stress to confer salt tolerance in rice

doi: 10.1016/j.jgg.2022.06.009

通讯作者: Bing Wang,E-mail:bingwang@genetics.ac.cn Hong Yu,E-mail:hyu@genetics.ac.cn

计量

出版历程

OsMPK4 promotes phosphorylation and degradation of IPA1 in response to salt stress to confer salt tolerance in rice

计量

出版历程

目录

通讯作者:
Bing Wang,E-mail:bingwang@genetics.ac.cn

Hong Yu,E-mail:hyu@genetics.ac.cn