GmSAP5, a soybean A20/AN1 domain-containing stress-associated protein gene activated by GmAREB3, increases drought stress resistance in soybean by mediating ABA signaling
文献类型： 外文期刊
作者： Hou, Zehao 1 ; Zhang, Xiangzhan 1 ; Tang, Yimiao 2 ; Yu, Taifei 1 ; Zheng, Lei 1 ; Chen, Jun 1 ; Zhou, Yongbin 1 ; Liu, Yongwei 3 ; Chen, Ming 1 ; Xu, Zhao-Shi 1 ; Ma, Youzhi 1 ;
作者机构： 1.Chinese Acad Agr Sci, Inst Crop Sci, Key Lab Biol & Genet Improvement Triticeae Crops, Minist Agr,Natl Key Facil Crop Gene Res & Genet I, Beijing 100081, Peoples R China
2.Beijing Acad Agr & Forestry Sci, Beijing Engn Res Ctr Hybrid Wheat, Municipal Key Lab Mol Genet Hybrid Wheat, Beijing 100097, Peoples R China
3.Hebei Acad Agr & Forestry Sci, Inst Genet & Physiol, Plant Genet Engn Ctr Hebei Prov, Shijiazhuang 050051, Hebei, Peoples R China
4.Chinese Acad Agr Sci, Zhengzhou Fruit Res Inst, Zhengzhou 450009, Henan, Peoples R China
关键词： Soybean; GmSAP5; GmAREB3; Drought stress; ABA
期刊名称：CROP JOURNAL （ 影响因子：4.647； 五年影响因子：5.781 ）
ISSN： 2095-5421
年卷期： 2022 年 10 卷 6 期
页码：
收录情况： SCI
摘要： Drought stress impairs crop growth and productivity. Stress-associated proteins (SAPs), a class of zinc finger proteins containing the A20/AN1 domain, function in various stress responses in plants. However, little is known about the function of SAPs in drought-stress responses in soybean, an oil and protein crop. We report that a GmSAP5 protein confers drought tolerance by increasing sensitivity to abscisic acid (ABA) and reducing stomatal aperture. Overexpression and RNA interference of GmSAP5 in soybean hairy roots resulted in elevated resistance and sensitivity to drought stress, respectively. ABA and proline contents increased in GmSAP5-overexpressing plants under water-deficit conditions. Lower water loss rates and higher relative water contents were observed in GmSAP5-overexpressing plants, resulting in increased drought-stress resistance. A yeast one-hybrid assay and luciferase transient transcriptional activity assay showed that GmAREB3, an AREB/ABF transcription factor, could bind to the promoter of GmSAP5 and activate its expression. These results suggest that GmSAP5 acts downstream of GmAREB3 and improves drought-stress resistance by mediating ABA signaling.(c) 2022 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. 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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