The Raf-like MAPKKKs STY8, STY17, and STY46 negatively regulate Botrytis cinerea resistance by limiting MKK7 protein accumulation in Arabidopsis
文献类型： 外文期刊
作者： Chen, Lijuan 1 ; Xiao, Jiahui 1 ; Li, You 1 ; Song, Yuxiao 1 ; Liu, Jun 1 ; Zhou, Qi 1 ; Sun, Ting 1 ; Wang, Hong-Bin 3 ; Liu, Bing 1 ;
作者机构： 1.Sun Yat Sen Univ, Sch Life Sci, Guangdong Prov Key Lab Plant Resources, Guangzhou 510275, Peoples R China
2.Guangzhou Univ Chinese Med, Sch Pharmaceut Sci, Inst Med Plant Physiol & Ecol, Guangzhou 510006, Peoples R China
3.Guangdong Acad Agr Sci, Key Lab South Subtrop Fruit Biol & Genet Resource, Guangdong Prov Key Lab Trop & Subtrop Fruit Tree, Minist Agr & Rural Affairs,Inst Fruit Tree Res, Guangzhou, Peoples R China
关键词： Arabidopsis; SERINE/THREONINE/TYROSINE KINASE; MKK7; chitin signaling; Botrytis cinerea
期刊名称：PLANT JOURNAL （ 影响因子：7.2； 五年影响因子：7.9 ）
ISSN： 0960-7412
年卷期： 2023 年
页码：
收录情况： SCI
摘要： Plant diseases, which seriously damage crop production, are in most cases caused by fungal pathogens. In this study, we found that the Raf-like MAPKKKs STY8 (SERINE/THREONINE/TYROSINE KINASE 8), STY17, and STY46 negatively regulate resistance to the fungal pathogen Botrytis cinerea through jasmonate response in Arabidopsis. Moreover, STY8/STY17/STY46 homologs negatively contribute to chitin signaling. We further identified MKK7 as the MAPKK component interacting with STY8/STY17/STY46 homologs. MKK7 positively contributes to resistance to B. cinerea and chitin signaling. Furthermore, we found that STY8/STY17/STY46 homologs negatively affect the accumulation of MKK7, in accordance with the opposite roles of MKK7 and STY8/STY17/STY46 homologs in defense against B. cinerea. These results provide new insights into the mechanisms precisely regulating plant immunity via Raf-like MAPKKKs.
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