The SALT OVERLY SENSITIVE 2-CONSTITUTIVE TRIPLE RESPONSE1 module coordinates plant growth and salt tolerance in Arabidopsis

Li, Qinpei1; Fu, Haiqi1; Yu, Xiang1; Wen, Xing2; Guo, Hongwei2; Guo, Yan1; Li, Jingrui1

2023-09-01

10.1093/jxb/erad368

JOURNAL OF EXPERIMENTAL BOTANY   Impact Factor & Quartile

0022-0957

1460-2431

["High salinity stress promotes plant ethylene biosynthesis and triggers the ethylene signalling response. However, the precise mechanism underlying how plants transduce ethylene signalling in response to salt stress remains largely unknown. In this study, we discovered that SALT OVERLY SENSITIVE 2 (SOS2) inhibits the kinase activity of CONSTITUTIVE TRIPLE RESPONSE1 (CTR1) by phosphorylating the 87th serine (S87). This phosphorylation event activates the ethylene signalling response, leading to enhanced plant salt resistance. Furthermore, through genetic analysis, we determined that the loss of CTR1 or the gain of SOS2-mediated CTR1 phosphorylation both contribute to improved plant salt tolerance. Additionally, in the sos2 mutant, we observed compromised proteolytic processing of ETHYLENE INSENSITIVE 2 (EIN2) and reduced nuclear localization of EIN2 C-terminal fragments (EIN2-C), which correlate with decreased accumulation of ETHYLENE INSENSITIVE 3 (EIN3). Collectively, our findings unveil the role of the SOS2-CTR1 regulatory module in promoting the activation of the ethylene signalling pathway and enhancing plant salt tolerance.","Plants employ the SOS2-CTR1 regulatory module to precisely regulate ethylene signalling pathway activation, thereby effectively coordinating plant growth and salt tolerance in response to environmental salinity stress."]

CTR1 ethylene signal transduction phosphorylation plant salt tolerance salt stress SOS2

SCI

English

Others

Plant Sciences

Plant Sciences

WOS:001083045800001

OXFORD UNIV PRESS

PLANT & ANIMAL SCIENCE

Web of Science

1.China Agr Univ, Coll Biol Sci, State Key Lab Plant Environm Resilience, Beijing 100193, Peoples R China
2.Southern Univ Sci & Technol, Inst Plant & Food Sci, Dept Biol, Shenzhen 518055, Peoples R China

Li, Qinpei,Fu, Haiqi,Yu, Xiang,et al. The SALT OVERLY SENSITIVE 2-CONSTITUTIVE TRIPLE RESPONSE1 module coordinates plant growth and salt tolerance in Arabidopsis[J]. JOURNAL OF EXPERIMENTAL BOTANY,2023.

Li, Qinpei.,Fu, Haiqi.,Yu, Xiang.,Wen, Xing.,Guo, Hongwei.,...&Li, Jingrui.(2023).The SALT OVERLY SENSITIVE 2-CONSTITUTIVE TRIPLE RESPONSE1 module coordinates plant growth and salt tolerance in Arabidopsis.JOURNAL OF EXPERIMENTAL BOTANY.

Li, Qinpei,et al."The SALT OVERLY SENSITIVE 2-CONSTITUTIVE TRIPLE RESPONSE1 module coordinates plant growth and salt tolerance in Arabidopsis".JOURNAL OF EXPERIMENTAL BOTANY (2023).