Cotton STARD Gene Family: Characterization, Evolution, and Expression Profiles During Salt Stress
文献类型: 外文期刊
作者: Ruifeng Cui;Jiuguang Sun;Shuyan Li;Yupeng Cui;Cun Rui;Minshan Sun;Wuwei Ye
作者机构:
关键词: cotton;gene expression;gene family;salt stress;STARD
期刊名称: Genes
ISSN: 2073-4425
年卷期: 2025 年 16 卷 7 期
页码:
收录情况: SCIE(2025版)
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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