Overexpression of CmMYB15 provides chrysanthemum resistance to aphids by regulating the biosynthesis of lignin
Overexpression of CmMYB15 provides chrysanthemum resistance to aphids by regulating the biosynthesis of lignin
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CmMYB15 的过表达通过调节木质素的生物合成提供菊花对蚜虫的抗性
DOI：
10.1038/s41438-019-0166-y
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发表时间：
2019-07-11
影响因子：
8.7
通讯作者：
Chen, Sumei
中科院分区：
文献类型：
--
作者：
An, Cong;Sheng, Liping;Chen, Sumei
MYB转录因子广泛参与植物的发育和生理过程。在这里，我们分离了菊花R2 R3-MYB家族转录因子CmMYB 15，AtMYB 15的同源基因。结果表明，CmMYB 15基因的表达受蚜虫诱导，并且CmMYB 15基因可以与木质素合成基因启动子中的AC元件结合。CmMYB 15在菊花中的过表达增强了蚜虫的抗性。此外，木质素含量和几个木质素生物合成基因的表达增加。综上所述，结果表明，CmMYB 15调节木质素生物合成基因，增强菊花对蚜虫的抗性。
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.