数字农科院2.0

GhSERAT1 enhanced the resistance of cotton to cadmium by maintaining the microscopic integrity of chloroplasts in cotton

文献类型： 外文期刊

作者： Yuan Meng;Yuping Sun;Ning Wang;Shuyan Li;Lijun Guan;Yapeng Fan;Xuke Lu;Nan Xu;Shuai Wang;Hui Huang;Xiugui Chen;Junjuan Wang;Lanjie Zhao;Lixue Guo;Hongyu Nan;Xiaoping Zhu;Keyun Feng;Kunpeng Zhang;Wuwei Ye

作者机构：

关键词： Blade structure;Cd2+ stress;Chloroplast;Cysteine;Expression patterns

期刊名称： Journal of Hazardous Materials Advances

ISSN： 2772-4166

年卷期： 2025 年 17 卷

页码：

收录情况： ESCI（2025版）

摘要： Cysteine metabolism is essential for plants to alleviate cadmium (Cd2+) stress. Investigating the function of serine acetyltransferase (SAT), the pivotal enzyme in cysteine synthesis, in combating Cd2+ stress is highly significant. This study conducted a bioinformatics analysis of the SAT gene family and identified key candidate genes, GhSERAT1;1 and GhSERAT1;2, that respond to Cd2+ stress. Plants subjected to gene silencing of GhSERAT1;1 and GhSERAT1;2 through virus-induced gene silencing exhibited a notable reduction in cysteine and glutathione levels, an increase in intracellular malondialdehyde content, and heightened sensitivity to Cd2+ stress. Compared with non-silenced plants, those with silenced genes displayed poorer growth conditions, decreased biomass, and more pronounced damage to chloroplast and leaf structures when exposed to Cd2+ stress. This study integrated the primary enzyme involved in cysteine synthesis with Cd2+ stress, elucidating the relationship between Cd2+ and cysteine. These findings significantly enhance our understanding of cysteine synthesis genes and contribute to developing Cd2+-resistant plant breeding strategies.

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