Calcineurin B-like interacting protein kinase 31 confers resistance to sheath blight via modulation of ROS homeostasis in rice
文献类型： 外文期刊
作者： Chen, Huan 1 ; Lin, Qiujun 1 ; Li, Zhuo 1 ; Chu, Jin 3 ; Dong, Hai 3 ; Mei, Qiong 1 ; Xuan, Yuanhu 1 ;
作者机构： 1.Shenyang Agr Univ, Coll Plant Protect, Shenyang, Peoples R China
2.Liaoning Acad Agr Sci, Inst Agr Qual Stand & Testing Technol, Shenyang, Peoples R China
3.Liaoning Acad Agr Sci, Inst Plant Protect, Shenyang, Peoples R China
4.Shenyang Agr Univ, Coll Plant Protect, Shenyang 110866, Peoples R China
关键词： CIPK31; homeostasis; resistance; rice; ROS; sheath blight
期刊名称：MOLECULAR PLANT PATHOLOGY （ 影响因子：4.9； 五年影响因子：5.9 ）
ISSN： 1464-6722
年卷期： 2023 年 24 卷 3 期
页码：
收录情况： SCI
摘要： Sheath blight (ShB) severely threatens rice cultivation and production; however, the molecular mechanism of rice defence against ShB remains unclear. Screening of transposon Ds insertion mutants identified that Calcineurin B-like protein-interacting protein kinase 31 (CIPK31) mutants were more susceptible to ShB, while CIPK31 overexpressors (OX) were less susceptible. Sequence analysis indicated two haplotypes of CIPK31: Hap_1, with significantly higher CIPK31 expression, was less sensitive to ShB than the Hap_2 lines. Further analyses showed that the NAF domain of CIPK31 interacted with the EF-hand motif of respiratory burst oxidase homologue (RBOHA) to inhibit RBOHA-induced H2O2 production, and RBOHA RNAi plants were more susceptible to ShB. These data suggested that the CIPK31-mediated increase in resistance is not associated with RBOHA. Interestingly, the study also found that CIPK31 interacted with catalase C (CatC); cipk31 mutants accumulated less H2O2 while CIPK31 OX accumulated more H2O2 compared to the wild-type control. Further analysis showed the interaction of the catalase domain of CatC with the NAF domain of CIPK31 by which CIPK31 inhibits CatC activity to accumulate more H2O2.
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