A bacterial kinase phosphorylates OSK1 to suppress stomatal immunity in rice.
A bacterial kinase phosphorylates OSK1 to suppress stomatal immunity in rice.
复制标题
细菌激酶磷酸化 OSK1 以抑制水稻气孔免疫
DOI:
10.1038/s41467-021-25748-4
复制
发表时间:
2021-09-16
影响因子:
16.6
通讯作者:
Sun W
中科院分区:
文献类型:
--
作者:
Wang S;Li S;Wang J;Li Q;Xin XF;Zhou S;Wang Y;Li D;Xu J;Luo ZQ;He SY;Sun W
The Xanthomonas outer protein C2 (XopC2) family of bacterial effectors is widely found in plant pathogens and Legionella species. However, the biochemical activity and host targets of these effectors remain enigmatic. Here we show that ectopic expression of XopC2 promotes jasmonate signaling and stomatal opening in transgenic rice plants, which are more susceptible to Xanthomonas oryzae pv. oryzicola infection. Guided by these phenotypes, we discover that XopC2 represents a family of atypical kinases that specifically phosphorylate OSK1, a universal adaptor protein of the Skp1-Cullin-F-box ubiquitin ligase complexes. Intriguingly, OSK1 phosphorylation at Ser53 by XopC2 exclusively increases the binding affinity of OSK1 to the jasmonate receptor OsCOI1b, and specifically enhances the ubiquitination and degradation of JAZ transcription repressors and plant disease susceptibility through inhibiting stomatal immunity. These results define XopC2 as a prototypic member of a family of pathogenic effector kinases and highlight a smart molecular mechanism to activate jasmonate signaling. XopC2 effectors are present in many plant bacterial pathogens. Here the authors show that XopC2 has kinase activity and enhances disease susceptibility by phosphorylating the OSK1 protein, which increases its interaction with the jasmonate receptor COI1b to promote JA signaling and stomatal opening.
登录
查看更多内容
影响因子:
30.3
作者:
Kim JG;Stork W;Mudgett MB
通讯作者:
Mudgett MB
DOI:
10.1073/pnas.0907200106
发表时间:
2009-08-18
影响因子:
11.1
作者:
Ge, Jianning;Xu, Hao;Shao, Feng
通讯作者:
Shao, Feng
影响因子:
64.8
作者:
Feng, Feng;Yang, Fan;Zhou, Jian-Min
通讯作者:
Zhou, Jian-Min
DOI:
10.1126/science.1171647
发表时间:
2009-05-08
期刊:
Science (New York, N.Y.)
影响因子:
--
作者:
Boller T;He SY
通讯作者:
He SY
影响因子:
9.8
作者:
Kannan N;Taylor SS;Zhai Y;Venter JC;Manning G
通讯作者:
Manning G