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

作　　者：Kun Yang Yi Wang Jialu Li Yaxin Du Ying Zhai Dong Liang Danyu Shen Rui Ji Xuexiang Ren Hao Peng Maofeng Jing Daolong Dou 

机构地区：[1]Key Laboratory of Biological Interaction and Crop Health,Department of Plant Pathology,Nanjing Agricultural University,Nanjing 210095,China [2]Department of Plant Pathology,Washington State University,Pullman,WA 99164,USA [3]Institute of Plant Protection,Jiangsu Academy of Agricultural Sciences,Nanjing 210014,China [4]Institute of Plant Protection and Agro-Products Safety,Anhui Academy of Agricultural Sciences,Hefei 230001,China [5]Academy for Advanced Interdisciplinary Studies,Nanjing Agricultural University,Nanjing 210095,China

出　　处：《Horticulture Research》2023年第2期41-52,共12页园艺研究（英文）

基　　金：supported by the National Natural Science Foundation of China(32272495,31801715,31721004);the Natural Science Foundation of Jiangsu Province(BK20220147).

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.

关 键 词：ELICITIN SOYBEAN soil 

分 类 号：S432[农业科学—植物病理学]