数字农科院2.0

The Monocot-Specific Receptor-like Kinase SDS2 Controls Cell Death and Immunity in Rice

文献类型： 外文期刊

作者： Jiangbo Fan; Pengfei Bai; Yuese Ning; Jiyang Wang; Xuetao Shi; Yehui Xiong; Kai Zhang;Feng He; Chongyang Zhang;Ruyi Wang; Xiangzong Meng; Jinggeng Zhou; Mo Wang; Gautam Shirsekar; Chan Ho Park; Maria Bellizzi; Wende Liu; Jong-Seong Jeon; Ye Xia; Libo Shan; Guo-Liang Wang

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期刊名称： Cell Host & Microbe

ISSN： 1931-3128

年卷期： 2018 年 23 卷 4.0 期

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收录情况： JCR（2021版）

摘要： Programmed cell death (PCD) plays critical roles in plant immunity but must be regulated to prevent excessive damage. The E3 ubiquitin ligase SPL11 negatively regulates PCD and immunity in plants. We show that SPL11 cell-death suppressor 2 (SDS2), an S-domain receptor-like kinase, positively regulates PCD and immunity in rice by engaging and regulating SPL11 and related kinases controlling defense responses. An sds2 mutant shows reduced immune responses and enhanced susceptibility to the blast fungus Magnaporthe oryzae. Conversely, SDS2 over-expression induces constitutive PCD accompanied by elevated immune responses and enhanced resistance to M. oryzae. SDS2 interacts with and phosphorylates SPL11, which in turn ubiquitinates SDS2, leading to its degradation. In addition, SDS2 interacts with related receptor-like cytoplasmic kinases, OsRLCK118/176, that positively regulate immunity by phosphorylating the NADPH oxidase OsRbohB to stimulate ROS production. Thus, a plasma membrane-resident protein complex consisting of SDS2, SPL11, and OsRLCK118/176 controls PCD and immunity in rice.

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