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

Tianqiao Song, You Zhang, Qi Zhang, Xiong Zhang, Danyu Shen, Junjie Yu, Mina Yu, Xiayan Pan, Huijuan Cao, Mingli Yong, Zhongqiang Qi, Yan Du, Rongsheng Zhang, Xiaole Yin, Junqing Qiao, Youzhou Liu, Wende Liu, Wenxian Sun, Zhengguang Zhang, Yuanchao Wang, Daolong Dou, Zhenchuan Ma () and Yongfeng Liu ()
Additional contact information
Tianqiao Song: Jiangsu Academy of Agricultural Sciences
You Zhang: Jiangsu Academy of Agricultural Sciences
Qi Zhang: Nanjing Agricultural University
Xiong Zhang: Nanjing Agricultural University
Danyu Shen: Nanjing Agricultural University
Junjie Yu: Jiangsu Academy of Agricultural Sciences
Mina Yu: Jiangsu Academy of Agricultural Sciences
Xiayan Pan: Jiangsu Academy of Agricultural Sciences
Huijuan Cao: Jiangsu Academy of Agricultural Sciences
Mingli Yong: Jiangsu Academy of Agricultural Sciences
Zhongqiang Qi: Jiangsu Academy of Agricultural Sciences
Yan Du: Jiangsu Academy of Agricultural Sciences
Rongsheng Zhang: Jiangsu Academy of Agricultural Sciences
Xiaole Yin: Jiangsu Academy of Agricultural Sciences
Junqing Qiao: Jiangsu Academy of Agricultural Sciences
Youzhou Liu: Jiangsu Academy of Agricultural Sciences
Wende Liu: Chinese Academy of Agricultural Sciences
Wenxian Sun: Jilin Agricultural University
Zhengguang Zhang: Nanjing Agricultural University
Yuanchao Wang: Nanjing Agricultural University
Daolong Dou: Nanjing Agricultural University
Zhenchuan Ma: Nanjing Agricultural University
Yongfeng Liu: Jiangsu Academy of Agricultural Sciences

Nature Communications, 2021, vol. 12, issue 1, 1-15

Abstract: Abstract 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.

Date: 2021
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DOI: 10.1038/s41467-021-22660-9

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