Systematical Characterization of the Cotton Di19 Gene Family and the Role of GhDi19-3 and GhDi19-4 as Two Negative Regulators in Response to Salt Stress
文献类型： 外文期刊
作者： Zhao, Lanjie 1 ; Li, Youzhong 2 ; Li, Yan 1 ; Chen, Wei 1 ; Yao, Jinbo 1 ; Fang, Shengtao 1 ; Lv, Youjun 3 ; Zhang, Yongshan 1 ; Zhu, Shouhong 1 ;
作者机构： 1.Chinese Acad Agr Sci, Inst Cotton Res, State Key Lab Cotton Biol, Anyang 455000, Peoples R China
2.Xinjiang Acad Agr & Reclamat Sci, Biotechnol Res Inst, Xinjiang Prod & Construct Grp, Key Lab Crop Germplasm Enhancement & Gene Resource, Shihezi 832000, Peoples R China
3.Anyang Inst Technol, Anyang 455000, Peoples R China
关键词： cotton; Di19; zinc-finger protein; ROS; abiotic stress
期刊名称：ANTIOXIDANTS （ 2021影响因子：7.675； 五年影响因子：7.886 ）
年卷期： 2022 年 11 卷 11 期
收录情况： SCI
摘要： Drought-induced 19 (Di19) protein is a Cys2/His2 (C2H2) type zinc-finger protein, which plays a crucial role in plant development and in response to abiotic stress. This study systematically investigated the characteristics of the GhDi19 gene family, including the member number, gene structure, chromosomal distribution, promoter cis-elements, and expression profiles. Transcriptomic analysis indicated that some GhDi19s were up-regulated under heat and salt stress. Particularly, two nuclear localized proteins, GhDi19-3 and GhDi19-4, were identified as being in potential salt stress responsive roles. GhDi19-3 and GhDi19-4 decreased sensitivity under salt stress through virus-induced gene silencing (VIGS), and showed significantly lower levels of H2O2, malondialdehyde (MDA), and peroxidase (POD) as well as significantly increased superoxide dismutase (SOD) activity. This suggested that their abilities were improved to effectively reduce the reactive oxygen species (ROS) damage. Furthermore, certain calcium signaling and abscisic acid (ABA)-responsive gene expression levels showed up- and down-regulation changes in target gene-silenced plants, suggesting that GhDi19-3 and GhDi19-4 were involved in calcium signaling and ABA signaling pathways in response to salt stress. In conclusion, GhDi19-3 and GhDi19-4, two negative transcription factors, were found to be responsive to salt stress through calcium signaling and ABA signaling pathways.
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