A novel protein elicitor (Cs08297) from Ciboria shiraiana enhances plant disease resistance
文献类型： 外文期刊
作者： Zhang, Shuai 1 ; Li, Ruolan 1 ; Fan, Wei 1 ; Chen, Xuefei 1 ; Tao, Caiquan 1 ; Liu, Shuman 1 ; Zhu, Panpan 2 ; 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, Peoples R China
3.Chinese Acad Trop Agr Sci, Inst Environm & Plant Protect, Haikou, Peoples R China
关键词：
cell death;
期刊名称：MOLECULAR PLANT PATHOLOGY （ 影响因子：4.9； 五年影响因子：5.6 ）
ISSN： 1464-6722
年卷期： 2024 年 25 卷 11 期
页码：
收录情况： SCI
摘要： Ciboria shiraiana is a necrotrophic fungus that causes mulberry sclerotinia disease resulting in huge economic losses in agriculture. During infection, the fungus uses immunity elicitors to induce plant tissue necrosis that could facilitate its colonization on plants. However, the key elicitors and immune mechanisms remain unclear in C. shiraiana. Herein, a novel elicitor Cs08297 secreted by C. shiraiana was identified, and it was found to target the apoplast in plants to induce cell death. Cs08297 is a cysteine-rich protein unique to C. shiraiana, and cysteine residues in Cs08297 were crucial for its ability to induce cell death. Cs08297 induced a series of defence responses in Nicotiana benthamiana, including the burst of reactive oxygen species (ROS), callose deposition, and activation of defence-related genes. Cs08297 induced-cell death was mediated by leucine-rich repeat (LRR) receptor-like kinases BAK1 and SOBIR1. Purified His-tagged Cs08297-thioredoxin fusion protein triggered cell death in different plants and enhanced plant resistance to diseases. Cs08297 was necessary for sclerotial development, oxidative-stress adaptation, and cell wall integrity but negatively regulated virulence of C. shiraiana. In conclusion, our results revealed that Cs08297 is a novel fungal elicitor in fungi inducing plant immunity. Furthermore, its potential to enhance plant resistance provides a new target to control agricultural diseases biologically.
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