Cotton STARD Gene Family: Characterization, Evolution, and Expression Profiles During Salt Stress

文献类型： 外文期刊

第一作者： Cui, Ruifeng

作者： Cui, Ruifeng;Sun, Jiuguang;Li, Shuyan;Cui, Yupeng;Rui, Cun;Sun, Minshan;Ye, Wuwei

作者机构：

关键词： cotton; STARD; gene family; salt stress; gene expression

期刊名称：GENES （ 影响因子：2.8； 五年影响因子：3.2 ）

ISSN：

年卷期： 2025 年 16 卷 7 期

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收录情况： SCI

摘要： Background: Cotton, a key global economic crop, suffers yield and quality losses due to salt stress. This study aims to analyze the cotton STARD gene family and its role in salt stress responses. Methods: We conducted a genome-wide analysis of the STARD gene family in four cotton species, using phylogenetic trees, chromosomal mapping, and collinearity analyses to explore their evolutionary relationships and expansion mechanisms. We also examined gene structures, conserved motifs, and promoter cis-elements. Results: STARD genes are evenly distributed across the four cotton species. Segmental duplication was found to be the main driver of gene expansion, with most pairs undergoing purifying selection. Distinct structural features and potential roles in plant growth and stress responses were identified. Notably, 11 GhSTARD genes showed significant expression changes under salt stress, especially GhSTARD45 in root tissues. Conclusions: This study provides new insights into the function and salt stress response mechanisms of the cotton STARD gene family, suggesting GhSTARD45 plays a key role in root-mediated salt tolerance and highlighting the potential of STARD genes in enhancing cotton's salt tolerance.

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