Function of the auxin-responsive gene TaSAUR75 under salt and drought stress

被引：73
|
作者：
Guo, Yuan [1 ]
Jiang, Qiyan [1 ]
Hu, Zheng [1 ]
Sun, Xianjun [1 ]
Fan, Shoujin [2 ]
Zhang, Hui [1 ]
机构：
[1] Chinese Acad Agr Sci, Natl Key Facil Crop Gene Resources & Genet Improv, Inst Crop Sci, Beijing 100081, Peoples R China
[2] Shandong Normal Univ, Coll Life Sci, Jinan 250014, Shandong, Peoples R China
来源：
CROP JOURNAL | 2018年 / 6卷 / 02期
关键词：
TaSAUR75; Drought; Salt; ROS; Wheat; Arabidopsis; GENOME-WIDE ANALYSIS; PROMOTE CELL EXPANSION; CLIMATE-CHANGE; NACL STRESS; ARABIDOPSIS; EXPRESSION; TOLERANCE; FAMILY; RICE; SALINITY;
D O I：
10.1016/j.cj.2017.08.005
中图分类号：
S3 [农学（农艺学）];
学科分类号：
0901 ;
摘要：
Small auxin-upregulated RNAs (SAURs) are genes regulated by auxin and environmental factors. In this study, we identified a SAUR gene in wheat, TaSAUR75. Under salt stress, TaSAUR75 is downregulated in wheat roots. Subcellular localization revealed that TaSAUR75 was localized in both the cytoplasm and nucleus. Overexpression of TaSAUR75 increased drought and salt tolerance in Arabidopsis. Transgenic lines showed higher root length and survival rate and higher expression of some stress-responsive genes than control plants under salt and drought stress. Less H2O2 accumulated in transgenic lines than in control plants under drought stress. Our findings reveal a positive regulatory role of the auxin-responsive gene TaSAUR75 in plant responses to drought and salt stress and provide a candidate gene for improvement of abiotic stress tolerance in crop breeding. (C) 2017 "Crop Science Society of China and Institute of Crop Science, CAAS". Production and hosting by Elsevier B.V. on behalf of KeAi Communications Co., Ltd.
引用
收藏
页码：181 / 190
页数：10
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