Receptor-like kinases OsRLK902-1 and OsRLK902-2 form immune complexes with OsRLCK185 to regulate rice blast resistance
文献类型： 外文期刊
第一作者： Liang, Jiahui
作者： Liang, Jiahui;Lu, Ling;Zhou, Houli;Fang, Jianbo;Hou, Hongna;Chen, Lizhe;Cao, Chang;Diao, Zhijuan;Tang, Dingzhong;Li, Shengping;Zhao, Yaofei;Yang, Dewei;Diao, Zhijuan;Tang, Dingzhong;Li, Shengping;Li, Shengping
作者机构：
关键词： Disease resistance; M. oryzae; OsRLCK185; OsRLK902; receptor-like kinase; rice; rice blast
期刊名称：JOURNAL OF EXPERIMENTAL BOTANY （ 影响因子：6.9； 五年影响因子：8.0 ）
ISSN： 0022-0957
年卷期： 2024 年 75 卷 5 期
页码：
收录情况： SCI
摘要： Receptor-like kinases (RLKs) are major regulators of the plant immune response and play important roles in the perception and transmission of immune signals. RECEPTOR LIKE KINASE 902 (RLK902) is at the key node in leucine-rich repeat receptor-like kinase interaction networks and positively regulates resistance to the bacterial pathogen Pseudomonas syringae in Arabidopsis. However, the function of RLK902 in fungal disease resistance remains obscure. In this study, we found that the expression levels of OsRLK902-1 and OsRLK902-2, encoding two orthologues of RLK902 in rice, were induced by Magnaporthe oryzae, chitin, and flg22 treatment. osrlk902-1 and osrlk902-2 knockout mutants displayed enhanced susceptibility to M. oryzae. Interestingly, the osrlk902-1 rlk902-2 double mutant exhibited similar disease susceptibility, hydrogen peroxide production, and callose deposition to the two single mutants. Further investigation showed that OsRLK902-1 interacts with and stabilizes OsRLK902-2. The two OsRLKs form a complex with OsRLCK185, a key regulator in chitin-triggered immunity, and stabilize it. Taken together, our data demonstrate that OsRLK902-1 and OsRLK902-2, as well as OsRLCK185 function together in regulating disease resistance to M. oryzae in rice. Receptor-like kinases OsRLK902-1 and OsRLK902-2 are required for rice blast resistance by forming immune complexes with OsRLCK185 and stabilizing OsRLCK185, a key regulator in chitin-triggered immunity.
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