Grapevine bZIP transcription factor bZIP45 regulates VvANN1 and confers drought tolerance in Arabidopsis
文献类型： 外文期刊
作者： Niu, Shuaike 1 ; Gu, Xiangyang 1 ; Zhang, Qian 1 ; Tian, Xuemin 1 ; Chen, Zhan 2 ; Liu, Jingru 1 ; Wei, Xiaoju 1 ; Yan, Chengxiang 1 ; Liu, Ziwen 1 ; Wang, Xiaoji 1 ; Zhu, Zhengge 1 ;
作者机构： 1.Hebei Normal Univ, Coll Life Sci,Hebei Key Lab Mol & Cellular Biol, Hebei Res Ctr Basic Discipline Cell Biol,Minist Ed, Hebei Collaborat Innovat Ctr Cell Signaling & Envi, Shijiazhuang, Peoples R China
2.Shijiazhuang Inst Pomol, Hebei Acad Agr & Forestry Sci, Grape Breeding, Shijiazhuang, Peoples R China
关键词： grapevine; annexin; bZIP transcription factor; drought stress; ROS
期刊名称：FRONTIERS IN PLANT SCIENCE （ 影响因子：5.6； 五年影响因子：6.8 ）
ISSN： 1664-462X
年卷期： 2023 年 14 卷
页码：
收录情况： SCI
摘要： Drought is a severe environmental condition that restricts the vegetative growth and reduces the yield of grapevine (Vitis vinifera L.). However, the mechanisms underlying grapevine response and adaptation to drought stress remain unclear. In the present study, we characterized an ANNEXIN gene, VvANN1, which plays a positive role in the drought stress response. The results indicated that VvANN1 was significantly induced by osmotic stress. Expression of VvANN1 in Arabidopsis thaliana enhanced osmotic and drought tolerance through modulating the level of MDA, H2O2, and O-2(center dot-) at the seedling stage, implying that VvANN1 might be involved in the process of ROS homeostasis under drought or osmotic stress conditions. Moreover, we used yeast one-hybridization and chromatin immunoprecipitation assays to show that VvbZIP45 could regulate VvANN1 expression by directly binding to the promoter region of VvANN1 in response to drought stress. We also generated transgenic Arabidopsis that constitutively expressed the VvbZIP45 gene (35S::VvbZIP45) and further produced VvANN1Pro::GUS/35S::VvbZIP45 Arabidopsis plants via crossing. The genetic analysis results subsequently indicated that VvbZIP45 could enhance GUS expression in vivo under drought stress. Our findings suggest that VvbZIP45 may modulate VvANN1 expression in response to drought stress and reduce the impact of drought on fruit quality and yield.
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