文献类型： 外文期刊
作者： Yang, Ruizhen 1 ; Yang, Ziyi 1 ; Xing, Meng 1 ; Jing, Yexing 1 ; Zhang, Yunwei 1 ; Zhang, Kewei 4 ; Zhou, Yun 5 ; Zhao, Huixian 2 ; Qiao, Weihua 1 ; Sun, Jiaqiang 1 ;
作者机构： 1.Chinese Acad Agr Sci, Inst Crop Sci, State Key Lab Crop Gene Resources & Breeding, Beijing 100081, Peoples R China
2.Northwest A&F Univ, Coll Life Sci, Yangling 712100, Shaanxi, Peoples R China
3.Chinese Acad Agr Sci, Natl Nanfan Res Inst Sanya, Sanya 572024, Hainan, Peoples R China
4.Zhejiang Normal Univ, Inst Plant Genet & Dev Biol, Coll Chem & Life Sci, Jinhua 321004, Zhejiang, Peoples R China
5.Henan Univ, Sch Life Sci, State Key Lab Crop Stress Adaptat & Improvement, Kaifeng 475001, Henan, Peoples R China
6.Northwest A&F Univ, State Key Lab Crop Stress Biol Arid Areas, Yangling 712100, Shaanxi, Peoples R China
关键词： Wheat; TaBZR1; Salt stress; ABA; ROS
期刊名称：JOURNAL OF GENETICS AND GENOMICS （ 影响因子：5.9； 五年影响因子：5.9 ）
ISSN： 1673-8527
年卷期： 2023 年 50 卷 11 期
页码：
收录情况： SCI
摘要： Brassinosteroids (BRs) are vital plant steroid hormones involved in numerous aspects of plant life including growth, development, and responses to various stresses. However, the underlying mechanisms of how BR regulates abiotic stress responses in wheat (Triticum aestivum L.) remain to be elucidated. Here, we find that BR signal core transcription factor BRASSINAZOLE-RESISTANT1 (TaBZR1) is significantly upregulated by salt treatment. Overexpression of Tabzr1-1D (a gain-of-function TaBZR1 mutant protein) improves wheat salt tolerance. Furthermore, we show that TaBZR1 binds directly to the G-box motif in the promoter of ABA biosynthesis gene TaNCED3 to activate its expression and promotes ABA accumulation. Moreover, TaBZR1 associates with the promoters of ROS-scavenging genes TaGPX2 and TaGPX3 to activate their expression. Taken together, our results elucidate that TaBZR1 improves salt-stress tolerance by activating some genes involved in the biosynthesis of ABA and ROS scavenging in wheat, which gives us a new strategy to improve the salt tolerance of wheat.Copyright (c) 2023, The Authors. Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, and Genetics Society of China. Published by Elsevier Limited and Science Press. This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).
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