CmMYB8 encodes an R2R3 MYB transcription factor which represses lignin and flavonoid synthesis in chrysanthemum
CmMYB8 encodes an R2R3 MYB transcription factor which represses lignin and flavonoid synthesis in chrysanthemum
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CmMYB8 编码 R2R3 MYB 转录因子，抑制菊花中木质素和类黄酮的合成
DOI：
10.1016/j.plaphy.2020.02.010
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发表时间：
2020
影响因子：
6.5
通讯作者：
Chen Fadi
中科院分区：
文献类型：
--
作者：
Zhu Lu;Guan Yunxiao;Zhang Zhaohe;Song Aiping;Chen Sumei;Jiang Jiafu;Chen Fadi
R2R3-MYB transcription factors are important regulators of the growth and development of plants. Here,CmMYB8a chrysanthemum gene encoding an R2R3-MYB transcription factor, was isolated and functionally characterized. The gene was transcribed throughout the plant, but most strongly in the stem. WhenCmMYB8was over-expressed, a number of genes encoding components of lignin synthesis were down-regulated, and the plants’ lignin content was reduced. The composition of the lignin in the transgenic plants was also altered, and its S/G ratio was reduced. A further consequence of the over-expression ofCmMYB8was to lessen the transcript abundance of key genes involved in flavonoid synthesis, resulting in a reduced accumulation of flavonoids. The indication is that the CmMYB8 protein participates in the negative regulation of both lignin and flavonoid synthesis.
