SAPK10-mediated phosphorylation on WRKY72 releases its suppression on jasmonic acid biosynthesis and bacterial blight resistance in rice
作者单位：State Key Lab of Rice BiologyChina National Rice Research Institute
会议名称：《华东六省一市生物化学与分子生物学会联盟2019年学术与教学交流会》
会议日期：2019年
学科分类：09[农学] 0904[农学-植物保护] 090401[农学-植物病理学] 090402[农学-农业昆虫与害虫防治]
关 键 词：bacterial blight jasmonic acid protein phosphorylation RNA directed DNA methylation rice(Oryza sativa L.) SnRK2 WRKY
摘 要：Bacterial blight caused by the infection of Xanthomonas oryzae ***(Xoo) is a devastating disease that severely challenges the yield of ***,we report the identification of a SAPK10-WRKY72-AOS1 module,through which Xoo infection stimulates the suppression of JA biosynthesis to cause Xoo ***72 directly binds to the W-box in the promoter of JA biosynthesis gene AOS1,and represses its transcription via inducing DNA hypermethylation on the target site,which finally led to lower endogenous JA level and higher Xoo ***-inducible SnRK2 type kinase SAPK10 phosphorylates WRKY72 at Thr *** SAPK10-mediated phosphorylation impairs the DNA binding ability of WRKY72,and releases its suppression on AOS1 and JA *** work highlights a module of how pathogen stimuli lead to plant susceptibility,as well as a potential pathway for ABA-JA interplay with post-translational modification and epigenetic regulation mechanism involved.