Overexpression of a Grape MYB Transcription Factor Gene VhMYB2 Increases Salinity and Drought Tolerance in Arabidopsis thaliana
文献类型： 外文期刊
作者： Ren, Chuankun 1 ; Li, Zhenghao 1 ; Song, Penghui 2 ; Wang, Yu 3 ; Liu, Wanda 3 ; Zhang, Lihua 1 ; Li, Xingguo 1 ; Li, Wenhui 1 ; Han, Deguo 1 ;
作者机构： 1.Northeast Agr Univ, Minist Agr & Rural Affairs, Coll Hort & Landscape Architecture, Natl Local Joint Engn Res Ctr Dev & Utilizat Small, Harbin 150030, Peoples R China
2.Heilongjiang Acad Agr Sci, Inst Rural Revitalizat Sci & Technol, Harbin 150028, Peoples R China
3.Heilongjiang Acad Agr Sci, Hort Branch, Harbin 150040, Peoples R China
关键词： grape; VhMYB2; salinity; drought; Arabidopsis thaliana
期刊名称：INTERNATIONAL JOURNAL OF MOLECULAR SCIENCES （ 影响因子：5.6； 五年影响因子：6.2 ）
ISSN： 1661-6596
年卷期： 2023 年 24 卷 13 期
页码：
收录情况： SCI
摘要： In viticulture, the highly resistant rootstock 'Beta' is widely used in Chinese grape production to avoid the effects of soil salinization and drought on grape growth. However, the mechanism of high resistance to abiotic stress in the 'Beta' rootstock is not clear. In this study, we demonstrated that VhMYB2 as a transcription factor made a significant contribution to salinity and drought stress, which was isolated from the 'Beta' rootstock. The coding sequence of the VhMYB2 gene was 858 bp, encoding 285 amino acids. The subcellular localization of VhMYB2 was located in the nucleus of tobacco epidermal cells. Moreover, RT-qPCR found that VhMYB2 was predominantly expressed in the mature leaf and root of the grape. Under salinity and drought stress, overexpressing VhMYB2 showed a higher resistant phenotype and survival rates in A. thaliana while the transgenic lines had a survival advantage by measuring the contents of proline, chlorophyll, and MDA, and activities of POD, SOD, and CAT, and expression levels of related stress response genes. The results reveal that VhMYB2 may be an important transcription factor regulating 'Beta' resistance in response to abiotic stress.
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