Knockdown of Gh_A05G1554 (GhDHN_03) and Gh_D05G1729 (GhDHN_04) Dehydrin genes, Reveals their potential role in enhancing osmotic and salt tolerance in cotton

文献类型： 外文期刊

第一作者： Kirungu, Joy Nyangasi

作者： Kirungu, Joy Nyangasi;Magwanga, Richard Odongo;Pu, Lu;Cai, Xiaoyan;Xu, Yuanchao;Hou, Yuqing;Zhou, Zhongli;Wang, Kunbo;Liu, Fang;Zhou, Yun;Cai, Yingfan;Hao, Fushun

作者机构：

关键词： Cotton; Osmotic-salt stress; Dehydrins; Virus-induced gene silencing (VIGS); Oxidant-antioxidant enzymes

期刊名称：GENOMICS （ 影响因子：5.736； 五年影响因子：4.939 ）

ISSN： 0888-7543

年卷期： 2020 年 112 卷 2 期

页码：

收录情况： SCI

摘要： In this investigation, whole-genome identification and functional characterization of the cotton dehydrin genes was carried out. A total of 16, 7, and 7 dehydrin proteins were identified in G. hirsutum, G. arboreum and G. raimondii, respectively. Through RNA sequence data and RT-qPCR validation, Gh_A05G1554 (GhDHN_03) and Gh_D05G1729 (GhDHN_04) were highly upregulated, and knockdown of the two genes, significantly reduced the ability of the plants to tolerate the effects of osmotic and salt stress. The VIGS-plants recorded significantly higher concentration levels of oxidants, hydrogen peroxide (H2O2) and malondialdehyde (MDA), furthermore, the four stress responsive genes GhLEA2, Gh_D12G2017 (CDKF4), Gh_A07G0747 (GPCR) and a transcription factor, trihelix, Gh_A05G2067, were significantly downregulated in VIGS-plants, but upregulated in wild types under osmotic and salt stress condition. The result indicated that dehydrin proteins are vital for plants and can be exploited in developing a more osmotic and salt stress-resilient germplasm to boost and improve cotton production.

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