数字农科院2.0

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

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

作者机构：

期刊名称： Nature Communications

ISSN： 2041-1723

年卷期： 2021 年 12 卷 1 期

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收录情况： JCR（2021版）

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. © 2021, The Author(s).

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