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Article|11 Jul 2019|OPEN
Overexpression of CmMYB15 provides chrysanthemum resistance to aphids by regulating the biosynthesis of lignin
Cong An1 , Liping Sheng1 , Xinping Du1 , Yinjie Wang1 , Yi Zhang1 , Aiping Song1 , Jiafu Jiang1 , Zhiyong Guan1 , Weimin Fang1 , Fadi Chen1 and Sumei Chen,1 ,
1State Key Laboratory of Crop Genetics and Germplasm Enhancement, the Key Laboratory of Landscaping, Ministry of Agriculture, College of Horticulture, Nanjing Agricultural University, Nanjing 210095, China
*Corresponding author. E-mail: chensm@njau.edu.cn

Horticulture Research 6,
Article number: 84 (2019)
doi: https://doi.org/10.1038/s41438-019-0166-y
Views: 1162

Received: 17 Feb 2019
Revised: 10 May 2019
Accepted: 17 May 2019
Published online: 11 Jul 2019

Abstract

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.