Methylation of MYBA1 is Associated with the Coloration in "Manicure Finger" Grape Skin

文献类型： 外文期刊

第一作者： Xia, Hui

作者： Xia, Hui;Shen, Yanqiu;Wang, Jin;Deng, Honghong;Lin, Lijin;Lv, Xiulan;Deng, Qunxian;Xu, Kunfu;Liang, Dong;Hu, Rongping

作者机构：

关键词： anthocyanin; coloration difference; DNA methylation; grape; MYBA1; UFGT

期刊名称：JOURNAL OF AGRICULTURAL AND FOOD CHEMISTRY （ 影响因子：5.895； 五年影响因子：6.048 ）

ISSN： 0021-8561

年卷期： 2021 年 69 卷 51 期

页码：

收录情况： SCI

摘要： The "Manicure Finger" grape is notable for its fingerlike berries with a bright red top and yellow base; however, the mechanism underlying this color difference remains unknown. This study showed that the anthocyanin concentration and the expression levels of anthocyanin-related genes in the top skin were notably higher than those in the basal skin. The expression levels of DFR, UFGT, and GST were significantly correlated with the anthocyanin content. The promoters of the two VvUFGT alleles can be activated by VvMYBA1, which was verified by the yeast one-hybrid assay, the dual-luciferase reporter gene assay, and the electrophoretic mobility shift assay. Moreover, the methylation level of the VvMYBA1 promoter (-1488 to -1083 bp) in the top skin was significantly lower than that in the basal skin and was positively correlated with the anthocyanin content. Our data suggest that methylation levels of the VvMYBA1 promoter play a crucial role in regulating grape skin coloration.

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