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The Pythium periplocum elicitin PpEli2 confers broad-spectrum disease resistance by triggering a novel receptor-dependent immune pathway in plants

文献类型： 外文期刊

作者： Yang, Kun 1 ; Wang, Yi 1 ; Li, Jialu 1 ; Du, Yaxin 1 ; Zhai, Ying 2 ; Liang, Dong 1 ; Shen, Danyu 1 ; Ji, Rui 3 ; Ren, Xuexiang 4 ; Peng, Hao 2 ; Jing, Maofeng 1 ; Dou, Daolong 1 ;

作者机构： 1.Nanjing Agr Univ, Dept Plant Pathol, Key Lab Biol Interact & Crop Hlth, Nanjing 210095, Peoples R China

2.Washington State Univ, Dept Plant Pathol, Pullman, WA 99164 USA

3.Jiangsu Acad Agr Sci, Inst Plant Protect, Nanjing 210014, Peoples R China

4.Anhui Acad Agr Sci, Inst Plant Protect & Agroprod Safety, Hefei 230001, Peoples R China

5.Nanjing Agr Univ, Acad Adv Interdisciplinary Studies, Nanjing 210095, Peoples R China

期刊名称：HORTICULTURE RESEARCH （ 影响因子：8.7； 五年影响因子：9.0 ）

ISSN： 2662-6810

年卷期： 2023 年 10 卷 2 期

页码：

收录情况： SCI

摘要： Elicitins are microbe-associated molecular patterns produced by oomycetes to elicit plant defense. It is still unclear whether elicitins derived from non-pathogenic oomycetes can be used as bioactive molecules for disease control. Here, for the first time we identify and characterize an elicitin named PpEli2 from the soil-borne oomycete Pythium periplocum, which is a non-pathogenic mycoparasite colonizing the root ecosystem of diverse plant species. Perceived by a novel cell surface receptor-like protein, REli, that is conserved in various plants (e.g. tomato, pepper, soybean), PpEli2 can induce hypersensitive response cell death and an immunity response in Nicotiana benthamiana. Meanwhile, PpEli2 enhances the interaction between REli and its co-receptor BAK1. The receptor-dependent immune response triggered by PpEli2 is able to protect various plant species against Phytophthora and fungal infections. Collectively, our work reveals the potential agricultural application of non-pathogenic elicitins and their receptors in conferring broad-spectrum resistance for plant protection.

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