The OsBSK1-2-MAPK module regulates blast resistance in rice  

作　　者：Shengping Li Xinquan Xiang Zhijuan Diao Na Xia Ling Lu Jing Zhang Zhiwei Chen Dingzhong Tang 

机构地区：[1]State Key Laboratory of Ecological Control of Fujian-Taiwan Crop Pests,Key Laboratory of Ministry of Education for Genetics,Breeding and Multiple Utilization of Crops,Plant Immunity Center,Fujian Agriculture and Forestry University,Fuzhou 350002,Fujian,China [2]College of Life Science,Fujian Agriculture and Forestry University,Fuzhou 350002,Fujian,China [3]Ministerial and Provincial Joint Innovation Centre for Safety Production of Cross-Strait Crops,Fujian Agriculture and Forestry University,Fuzhou 350002,Fujian,China [4]Fujian Provincial Key Laboratory of Crop Breeding by Design,Fujian Agriculture and Forestry University,Fuzhou 350002,Fujian,China

出　　处：《The Crop Journal》2024年第1期110-120,共11页作物学报（英文版）

基　　金：This work was supported by the National Key Research and Development Program of China(2022YFF1001500);Key Program of Technology and Science in Fujian province(2020NZ08016).

摘　　要：Receptor-like cytoplasmic kinase OsBSK1-2 was reported to play an important role in regulation of response to rice blast,but the signaling pathway remained unknown.In this study,we identified OsMAPKKK18 and previously uncharacterized MAPKKKs OsMAPKKK16 and OsMAPKKK19 that interact with OsBSK1-2.Expression of all three MAPKKKs was induced by Magnaporthe oryzae infection,and all three induced cell death when transiently expressed in Nicotiana benthamiana leaves.Knockout of OsMAPKKK16 and OsMAPKKK18 compromised blast resistance and overexpression of OsMAPKKK19 increased blast resistance,indicating that all three MAPKKKs are involved in regulation of rice blast response.Furthermore,both OsMAPKKK16 and OsMAPKKK19 interacted with and phosphorylated OsMKK4 and OsMKK5,and chitin-induced MAPK activation was suppressed in osmapkkk16 and osbsk1-2 mutants.OsMAPKKK18 was earlier reported to interact with and phosphorylate OsMKK4 and affect chitin-induced MAPK activation,suggesting that OsBSK1-2 is involved in regulation of immunity through multiple MAPK signaling pathways.Unlike BSK1 in Arabidopsis,OsBSK1-2 was not involved in response to avirulent M.oryzae strains.Taken together,our results revealed important roles of OsMAPKKK16/18/19 and a OsBSK1-2-OsMAPKKK16/18/19-OsMKK4/5 module in regulating response to rice blast.

关 键 词：Disease resistance Magnaporthe oryzae Oriza sativa Rice blast 

分 类 号：S435.111.41[农业科学—农业昆虫与害虫防治]