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Oomycete Nudix effectors display WY-Nudix conformation and mRNA decapping activity
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作者 Baodian Guo Qinli Hu +8 位作者 Bangwei Wang Deqiang Yao Haonan Wang Guanghui Kong Chenyang Han Suomeng Dong Fengquan Liu weiman xing Yuanchao Wang 《Journal of Integrative Plant Biology》 SCIE CAS CSCD 2024年第8期1548-1552,共5页
Phytopathogens secrete effectors to promote colonization of their host plants.These effectors modulate host immune responses by interfering with various pathways,but little is known about their biochemical activities.... Phytopathogens secrete effectors to promote colonization of their host plants.These effectors modulate host immune responses by interfering with various pathways,but little is known about their biochemical activities.Several recent reports indicate that some phytopathogen effectors have Nudix hydrolase activity,including Avr3b from Phytophthora sojae(Dong et al.,2011),AvrM14 from Melampsora lini (McCombe et al.,2023),and RipN from Ralstonia solanacearum (Sun et al.,2019). 展开更多
关键词 plants PHYTOPHTHORA BIOCHEMICAL
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Phytophthora sojae Effector PsAvh240 Inhibits Host Aspartic Protease Secretion to Promote Infection 被引量:15
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作者 Baodian Guo Haonan Wang +13 位作者 Bo Yang Wenjing Jiang Maofeng Jing Haiyang Li Yeqiang Xia Yuanpeng Xu Qinli Hu Fangfang Wang Feng Yu Yan Wang Wenwu Ye Suomeng Dong weiman xing Yuanchao Wang 《Molecular Plant》 SCIE CAS CSCD 2019年第4期552-564,共13页
Plants secrete defense molecules into the extracellular space (the apoplast) to combat attacking microbes. However, the mechanisms by which successful pathogens subvert plant apoplastic immunity remain poorly understo... Plants secrete defense molecules into the extracellular space (the apoplast) to combat attacking microbes. However, the mechanisms by which successful pathogens subvert plant apoplastic immunity remain poorly understood. In this study, we show that PsAvh240, a membrane-localized effector of the soybean pathogen Phytophthora sojae, promotes P. sojae infection in soybean hairy roots. We found that PsAvh240 interacts with the soybean-resistant aspartic protease GmAP1 in planta and suppresses the secretion of GmAP1 into the apoplast. By solving its crystal structure we revealed that PsAvh240 contain six a helices and two WY motifs. The first two a helices of PsAvh240 are responsible for its plasma membrane-localization and are required for PsAvh240's interaction with GmAP1. The second WY motifs of two PsAvh240 molecules form a handshake arrangement resulting in a handshake-like dimer. This dimerization is required for the effector's repression of GmAP1 secretion. Taken together, these data reveal that PsAvh240 localizes at the plasma membrane to interfere with GmAP1 secretion, which represents an effective mechanism by which effector proteins suppress plant apoplastic immunity. 展开更多
关键词 Phytophthora sojae effector handshake-like dimer soybean aspartic protease plant apoplastic immunity effector triggered susceptibility
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