The N-terminus of an Ustilaginoidea virens Ser-Thr-rich glycosylphosphatidylinositol-anchored protein elicits plant immunity as a MAMP

文献类型： 外文期刊

第一作者： Song, Tianqiao

作者： Song, Tianqiao;Zhang, You;Yu, Junjie;Yu, Mina;Pan, Xiayan;Cao, Huijuan;Yong, Mingli;Qi, Zhongqiang;Du, Yan;Zhang, Rongsheng;Yin, Xiaole;Qiao, Junqing;Liu, Youzhou;Liu, Yongfeng;Zhang, Qi;Zhang, Xiong;Zhang, Zhengguang;Wang, Yuanchao;Dou, Daolong;Ma, Zhenchuan;Liu, Wende;Sun, Wenxian

作者机构：

期刊名称：NATURE COMMUNICATIONS （ 影响因子：14.919； 五年影响因子：15.805 ）

ISSN：

年卷期： 2021 年 12 卷 1 期

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收录情况： SCI

摘要： Many pathogens infect hosts through specific organs, such as Ustilaginoidea virens, which infects rice panicles. Here, we show that a microbe-associated molecular pattern (MAMP), Ser-Thr-rich Glycosyl-phosphatidyl-inositol-anchored protein (SGP1) from U. virens, induces immune responses in rice leaves but not panicles. SGP1 is widely distributed among fungi and acts as a proteinaceous, thermostable elicitor of BAK1-dependent defense responses in N. benthamiana. Plants specifically recognize a 22 amino acid peptide (SGP1 N terminus peptide 22, SNP22) in its N-terminus that induces cell death, oxidative burst, and defense-related gene expression. Exposure to SNP22 enhances rice immunity signaling and resistance to infection by multiple fungal and bacterial pathogens. Interestingly, while SGP1 can activate immune responses in leaves, SGP1 is required for U. virens infection of rice panicles in vivo, showing it contributes to the virulence of a panicle adapted pathogen.Ustilaginoidea virens is a fungal pathogen that infects rice via the panicles. Here, the authors show that U. virens SGP1, a conserved Ser-Thr-rich glycosyl-phosphatidyl-inositol-anchored protein, elicits immune responses in rice leaves while contributing to virulence in panicles.

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