首页|VvWRKY5 positively regulates wounding-induced anthocyanin accumulation in grape by interplaying with VvMYBA1 and promoting jasmonic acid biosynthesis
VvWRKY5 positively regulates wounding-induced anthocyanin accumulation in grape by interplaying with VvMYBA1 and promoting jasmonic acid biosynthesis
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Wounding stress induces the biosynthesis of various secondary metabolites in plants,including anthocyanin.However,the underlying molecular mechanism remains elusive.Here,we reported that a transcription factor,VvWRKY5,promotes wounding-induced antho-cyanin accumulation in grape(Vitis vinifera).Biochemical and molecular analyses demonstrated that wounding stress significantly increased anthocyanin content,and VvMYBA1 plays an essential role in this process.VvWRKY5 could interact with VvMYBA1 and amplify the activation effect of VvMYBA1 on its target gene VvUFGT.The transcript level of VvWRKY5 was notably induced by wounding treatment.Moreover,our data demonstrated that VvWRKY5 could promote the synthesis of j asmonic acid(JA),a phytohormone that acts as a positive modulator in anthocyanin accumulation,by directly binding to the W-box element in the promoter of the JA biosynthesis-related gene VvLOX and enhancing its activities,and this activation was greatly enhanced by the VvWRKY5-VvMYBA1 protein complex.Collectively,our findings show that VvWRKY5 plays crucial roles in wounding-induced anthocyanin synthesis in grape and elucidates the transcriptional regulatory mechanism of wounding-induced anthocyanin accumulation.
College of Horticulture,Shenyang Agricultural University,Shenyang 110866,China
National & Local Joint Engineering Research Center of Northern Horticultural Facilities Design and Application Technology(Liaoning),Shenyang 110866,China
China Agriculture Research SystemNational Natural Science Foundation of ChinaMajor Agricultural Science Projects of Liaoning ProvinceScience and Technology Program of Shenyang
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