Metabolic profiles in the xylem sap of Brassica juncea exposed to cadmium

文献类型： 外文期刊

第一作者： Yang, Zhen

作者： Yang, Zhen;Tan, Piaopiao;Huang, Zhihao;Sun, Zhenzhen;Liu, Zhixiang;Zeng, Chaozhen;Yang, Zhen;Tan, Piaopiao;Huang, Zhihao;Sun, Zhenzhen;Liu, Zhixiang;Zeng, Chaozhen;Liu, Lili;Tong, Jianhua;Yan, Mingli;Zeng, Chaozhen;Tong, Jianhua;Yan, Mingli

作者机构：

期刊名称：PHYSIOLOGIA PLANTARUM （ 影响因子：6.4； 五年影响因子：5.9 ）

ISSN： 0031-9317

年卷期： 2023 年 175 卷 2 期

页码：

收录情况： SCI

摘要： Metabolic profiles in xylem sap are considered a fundamental mechanism for Cadmium (Cd) detoxification in plants. However, the metabolic mechanism of Brassica juncea xylem sap in response to Cd is still unclear. Here, we investigated the effects on the metabolomics of B. juncea xylem sap treated with Cd at different times by utilizing a nontargeted liquid chromatography-mass spectrometry (LC-MS)-based metabolomics method for further elucidating the response mechanism of Cd exposure. The findings indicated that 48 h and 7 days Cd exposure caused significant differences in metabolic profiles of the B. juncea xylem sap. Those differential metabolites are primarily involved in amino acids, organic acids, lipids, and carbohydrates, and most of them were downregulated, which played essential roles in response to Cd stress. Furthermore, B. juncea xylem sap resisted 48-h Cd exposure via regulation of glycerophospholipid metabolism, carbon metabolism, aminoacyl-tRNA biosynthesis, glyoxylate and dicarboxylate metabolism, linoleic acid metabolism, C5-branched dibasic acid metabolism, alpha-linolenic acid metabolism, cyanoamino acid metabolism, ABC transporters, biosynthesis of amino acids, and pyrimidine metabolism; whereas alpha-linolenic acid metabolism, glycerophospholipid metabolism, photosynthesis, and oxidative phosphorylation were regulated for resisting 7-day Cd exposure.

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