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Effector Cs02526 from Ciboria shiraiana induces cell death and modulates plant immunity

文献类型： 外文期刊

作者： Zhang, Shuai 1 ; Li, Ruolan 1 ; Fan, Wei 1 ; Chen, Xuefei 1 ; Liu, Shuman 1 ; Zhu, Panpan 2 ; Gu, Xiaohui 1 ; Wang, Shuchang 3 ; Zhao, Aichun 1 ;

作者机构： 1.Southwest Univ, Inst Sericulture & Syst Biol, State Key Lab Resource Insects, Chongqing 400715, Peoples R China

2.Guizhou Univ Tradit Chinese Med, Resource Inst Chinese & Ethn Mat Med, Guiyang 550025, Peoples R China

3.Chinese Acad Trop Agr Sci, Inst Environm & Plant Protect, Haikou 570100, Peoples R China

期刊名称：PLANT PHYSIOLOGY （ 影响因子：6.5； 五年影响因子：7.6 ）

ISSN： 0032-0889

年卷期： 2024 年

页码：

收录情况： SCI

摘要： Sclerotinia disease is one of the most devastating fungal diseases worldwide, as it reduces the yields of many economically important crops. Pathogen-secreted effectors play crucial roles in infection processes. However, key effectors of Ciboria shiraiana, the pathogen primarily responsible for sclerotinia disease in mulberry (Morus spp.), remain poorly understood. In this study, we identified and functionally characterized the effector Cs02526 in C. shiraiana and found that Cs02526 could induce cell death in a variety of plants. Moreover, Cs02526-induced cell death was mediated by the central immune regulator brassinosteroid insensitive 1-associated receptor kinase 1, dependent on a 67-amino acid fragment. Notably, Cs02526 homologs were widely distributed in hemibiotrophic and necrotrophic phytopathogenic fungi, but the homologs failed to induce cell death in plants. Pretreatment of plants with recombinant Cs02526 protein enhanced resistance against both C. shiraiana and Sclerotinia sclerotiorum. Furthermore, the pathogenicity of C. shiraiana was diminished upon spraying plants with synthetic dsRNA-Cs02526. In conclusion, our findings highlight the cell death-inducing effector Cs02526 as a potential target for future biological control strategies against plant diseases. An effector in Ciboria shiraiana induces cell death, and treatment with its double-stranded RNA or protein improves plant resistance to pathogens.

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