The bHLH transcription factor regulated gene OsWIH2 is a positive regulator of drought tolerance in rice
文献类型： 外文期刊
作者： Gu, Xiangyang 1 ; Gao, Shuxin 1 ; Li, Jing 1 ; Song, Pengyu 1 ; Zhang, Qian 1 ; Guo, Jinfeng 1 ; Wang, Xiaoyan 1 ; Han, Xiaoyu 1 ; Wang, Xiaoji 1 ; Zhu, Ying 2 ; Zhu, Zhengge 1 ;
作者机构： 1.Hebei Normal Univ, Hebei Collaborat Innovat Ctr Cell Signaling, Minist Educ,Key Lab Mol & Cellular Biol, Coll Life Sci,Hebei Key Lab Mol & Cellular Biol, Shijiazhuang 050024, Hebei, Peoples R China
2.Zhejiang Acad Agr Sci, Inst Virol & Biotechnol, State Key Lab Managing Biot & Chem Treats Qual &, Hangzhou 310021, Peoples R China
关键词： OsWIH2; Drought stress; Oryza sativa; Transcriptional regulation
期刊名称：PLANT PHYSIOLOGY AND BIOCHEMISTRY （ 影响因子：5.437； 五年影响因子：5.731 ）
ISSN： 0981-9428
年卷期： 2021 年 169 卷
页码：
收录情况： SCI
摘要： Drought is a major abiotic stress limiting crop growth and yield. In this study, we characterized a novel drought tolerance induced WIH gene in rice, OsWIH2. Overexpression of OsWIH2 in rice resulted in significantly higher drought tolerance, probably due to the decreased water loss rate and reactive oxygen species (ROS) accumulation under drought stress. We identified a long-chain fatty acid HOTHEAD (HTH) that interacted with OsWIH2 using yeast two-hybrid screening. OsWIH2 is an enzyme which is involved in fatty acid synthesis. We further demonstrated that the drought-inducible bHLH transcription factor OsbHLH130 could activate the expression of OsWIH2. Overall, our results suggest that drought stress may induce OsbHLH130 accumulation, which in turn activates OsWIH2 expression, and the latter improves rice drought tolerance by participating in cuticular wax biosynthesis and reducing the water loss rate as well as ROS accumulation. This research provides new genes for crop improvement.
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