Identification of a Novel Cysteine Rich Effector SCR2 from Plant Oomycete Pathogens
作者单位：College of Plant ProtectionNanjing Agricultural University The Key Laboratory of Integrated Management of Crop Diseases and PestsMinistry of Education The Sainsbury LaboratoryNorwich Research Park Wageningen UR Plant BreedingWageningen University and Research Centre
会议名称：《中国植物病理学会2016年学术年会》
会议日期：2016年
学科分类：09[农学] 0904[农学-植物保护] 090401[农学-植物病理学]
摘 要：Oomycete,a group of filamentous plant pathogens,is responsible for most notorious crop diseases such as potato late blight that threaten the global food *** has been known that many small cysteine rich（SCR） effectorgenes are highly inducedduring oomycete infection,however,the molecular mode of actions of SCR effectors remain largely unknown.A preliminary bioinformatics analysis combined with high-throughputin planta screening assay resulted in the identification of a Phytophthora infestans cysteine rich effector SCR2,which could trigger significant reactive oxygen burst,defence related gene induction and hypersensitive response in Nicotiana *** many other SCR effectors,SCR2 orthologs are wildly presented in oomycete plant pathogens,including species from Phytophthora,Hyaloperonospora,Pythium and *** induced gene silencing（VIGS） found that SCR2 induced host immunity required immune hub regulator BAK1 and akinase MAPKKKξ.Furthermore,chemical inhibition assay suggested that Serine proteases are also involved in SCR2 *** summary,we identified a novel SCR effector with priming host immunity *** biochemical functions of SCR2 and the mechanisms of recognition deserve further investigations.