PnSCR82,a small cysteine-rich secretory protein of Phytophthora nicotianae,can enhance defense responses in plants  

作　　者：WANG Ya-di LI Fei ZHANG Xin LIU Ting-li LIANG Wen-xing LI De-long 

机构地区：[1]College of Plant Health and Medicine,Key Laboratory of Integrated Crop Pest Management of Shandong Province,Qingdao Agricultural University,Qingdao 266109,P.R.China [2]Hunan Academy of Agricultural Sciences,Changsha 410125,P.R.China [3]Provincial key laboratory of agrobiology,Jiangsu Academy of Agricultural Sciences,Nanjing 210014,P.R.China

出　　处：《Journal of Integrative Agriculture》2022年第3期751-761,共11页农业科学学报（英文版）

基　　金：supported by the National Natural Science Foundation of China(31972218,31501590,and 31601615);the Program for Talents in Qingdao Agricultural University,China(6631114307);the Independent Innovation of Agricultural Sciences in Jiangsu Province,China(CX(18)3012)。

摘　　要：A number of plant pathogenic species of Phytophthora are known to produce different classes of secretory proteins during interactions with their hosts.Although several small cysteine-rich(SCR)secretory proteins,conserved in oomycete pathogens,have been identified in Phytophthora,their specific involvement in these interactions remains unknown.In this study,an SCR effector encoded by Pn SCR82 in P.nicotianae was identified and shown to have similarities to P.cactorum phytotoxic protein,Pc F(Phytophthora cactorum Fragaria).Agroinfection with potato virus X vector,Pn SCR82,was capable of inducing plant hypersensitive cell death in Nicotiana benthamiana and Solanum lycopersicum.Real-time PCR results indicated that transiently expressed Pn SCR82 in N.benthamiana leaves activated the jasmonate,salicylic acid and ethylene signaling pathways.Transient expression of Pn SCR82 enhanced plant resisitance to P.capsici.In summary,our results demonstrated that P.nicotianae Pn SCR82 elicits defensive responses in N.benthamiana and may potentially play a significant role in future crop protection programs.

关 键 词：small cysteine-rich secretory protein defense responses RESISTANCE 

分 类 号：S435.32[农业科学—农业昆虫与害虫防治]