Genome-Wide Characterization of the SAMS Gene Family in Cotton Unveils the Putative Role of GhSAMS2 in Enhancing Abiotic Stress Tolerance
文献类型： 外文期刊
作者： Kilwake, Joseph Wanjala 1 ; Umer, Muhammad Jawad 1 ; Wei, Yangyang 2 ; Mehari, Teame Gereziher 3 ; Magwanga, Richard Odongo 1 ; Xu, Yanchao 1 ; Hou, Yuqing 1 ; Wang, Yuhong 1 ; Shiraku, Margaret Linyerera 1 ; Kirungu, Joy Nyangasi 1 ; Cai, Xiaoyan 1 ; Zhou, Zhongli 1 ; Peng, Renhai 2 ; Liu, Fang 1 ;
作者机构： 1.Chinese Acad Agr Sci, Inst Cotton Res, State Key Lab Cotton Biol, Anyang 455000, Peoples R China
2.Anyang Inst Technol, Biol & Food Engn, Anyang 455000, Peoples R China
3.Nantong Univ, Sch Life Sci, Nantong 226007, Peoples R China
4.Jaram Oginga Odinga Univ Sci & Technol JOOUST, Sch Biol Phys Math & Actuarial Sci SBPMAS, POB 21040601, Bondo, Kenya
5.Zhengzhou Univ, Sch Agr Sci, Zhengzhou 450001, Peoples R China
关键词： S-adenosyl-L-methionine synthetase; virus-induced gene silencing; SAMS2; abiotic stress; upland cotton
期刊名称：AGRONOMY-BASEL （ 影响因子：3.7； 五年影响因子：4.0 ）
ISSN：
年卷期： 2023 年 13 卷 2 期
页码：
收录情况： SCI
摘要： The most devastating abiotic factors worldwide are drought and salinity, causing severe bottlenecks in the agricultural sector. To acclimatize to these harsh ecological conditions, plants have developed complex molecular mechanisms involving diverse gene families. Among them, S-adenosyl-L-methionine synthetase (SAMS) genes initiate the physiological, morphological, and molecular changes to enable plants to adapt appropriately. We identified and characterized 16 upland cotton SAMS genes (GhSAMSs). Phylogenetic analysis classified the GhSAMSs into three major groups closely related to their homologs in soybean. Gene expression analysis under drought and salt stress conditions revealed that GhSAMS2, which has shown the highest interaction with GhCBL10 (a key salt responsive gene), was the one that was most induced. GhSAMS2 expression knockdown via virus-induced gene silencing (VGIS) enhanced transgenic plants' susceptibility to drought and salt stress. The TRV2:GhSAMS2 plants showed defects in terms of growth and physiological performances, including antioxidative processes, chlorophyll synthesis, and membrane permeability. Our findings provide insights into SAMS genes' structure, classification, and role in abiotic stress response in upland cotton. Moreover, they show the potential of GhSAMS2 for the targeted improvement of cotton plants' tolerance to multiple abiotic stresses.
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