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VvMYB15 and VvWRKY40 Positively Co-regulated Anthocyanin Biosynthesis in Grape Berries in Response to Root Restriction

文献类型： 外文期刊

作者： Li, Dongmei 1 ; Wang, Zhenping 2 ; Sun, Sijie 1 ; Xiao, Kun 1 ; Cao, Minghao 1 ; Li, Xiangyi 1 ; Ma, Chao 1 ; Zhang, Caixi 1 ; Wang, Lei 1 ; Lian, Hongli 1 ; Wang, Shiping 1 ;

作者机构： 1.Shanghai Jiao Tong Univ, Sch Agr & Biol, Dept Plant Sci, Shanghai, Peoples R China

2.Ningxia Univ, Sch Agr & Biol, Yinchuan, Ningxia, Peoples R China

3.Shandong Acad Agr Sci, Inst Agro Food Sci & Technol, Key Lab Agroprod Proc Technol Shandong, Jinan, Peoples R China

关键词： anthocyanin; VvMYB15; VvWRKY40; root restriction; grape

期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：5.754； 五年影响因子：6.612 ）

ISSN： 1664-462X

年卷期： 2021 年 12 卷

页码：

收录情况： SCI

摘要： In most grapevine planting regions, especially in south of China, plenty of rainfall and high water level underground are the characteristic of the area, a series of problem during fruit ripening easily caused poor color quality. Thereby affecting fruit quality, yield and economic benefits. The accumulation of anthocyanin is regulated by transcriptional regulatory factor and a series of cultivation measures, root restriction can make plants in the environment of stress and stress relief, root restriction induced the higher expression of VvMYB15 and VvWRKY40, and consistent with anthocyanin accumulation. Whether and how root restriction-inducible VvMYB15 and VvWRKY40 transcription factor regulate anthocyanin synthesis in grape berry is still unclear. In this study, we identified that the transient overexpression of VvMYB15 and VvWRKY40 alone or both in strawberry fruits and grape berries can promote anthocyanin accumulation and increase the expression level of anthocyanin biosynthetic genes, indicating VvMYB15 and VvWRKY40 play a positive regulator of anthocyanin biosynthesis. Furthermore, we confirmed that both VvMYB15 and VvWRKY40 specifically bind to the promoter region of VvF3 ' 5 ' H and VvUFGT, and the expression of VvF3 ' 5 ' H and VvUFGT is further activated through the heterodimer formation between VvMYB15 and VvWRKY40. Finally, we confirmed that VvMYB15 promoted anthocyanin accumulation by interacting with VvWRKY40 in grape berries, our findings provide insights into a mechanism involving the synergistic regulation of root restriction-dependent coloration and biosynthesis via a VvMYB15 and VvWRKY40 alone or both in grape berries.

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