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

文献类型： 外文期刊

第一作者： Guo, Yuan

作者： Guo, Yuan;Jiang, Qiyan;Hu, Zheng;Sun, Xianjun;Zhang, Hui;Fan, Shoujin

作者机构：

关键词： TaSAUR75; Drought; Salt; ROS; Wheat; Arabidopsis

期刊名称：CROP JOURNAL （ 影响因子：4.407； 五年影响因子：5.687 ）

ISSN： 2095-5421

年卷期： 2018 年 6 卷 2 期

页码：

收录情况： SCI

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.

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