摘要
MYB transcription factors are widely involved in the development of and physiological processes in plants.Here,we isolated the chrysanthemum R2R3-MYB family transcription factor CmMYB15,a homologous gene of AtMYB15.It was demonstrated that CmMYB15 expression was induced by aphids and that CmMYB15 could bind to AC elements,which usually exist in the promoter of lignin biosynthesis genes.Overexpression of CmMYB15 in chrysanthemum enhanced the resistance of aphids.Additionally,the content of lignin and the expression of several lignin biosynthesis genes increased.In summary,the results indicate that CmMYB15 regulates lignin biosynthesis genes that enhance the resistance of chrysanthemum to aphids.
基金
supported by the National Natural Science Foundation of China(Grant No.31672192)
the Program for Key Research and Development,Jiangsu,China(Grant No.BE2017318)
the National Key Research and Development Program of China(2018YFD1000402)
the Fundamental Research Funds for the Central Universities(KJQN201812).
