Affiliation:
1. Hunan Provincial Key Laboratory of Forestry Biotechnology, College of Life Science and Technology Central South University of Forestry and Technology Changsha China
2. Hunan Provincial Base for Scientific and Technological Innovation Cooperation on Forest Resource Biotechnology Changsha China
3. College of Life Sciences, Hunan Key Laboratory of Economic Crops Genetic Improvement and Integrated Utilization Hunan University of Science and Technology Xiangtan China
4. Hunan Provincial Key Laboratory of Phytohormones and Growth Development, College of Bioscience and Biotechnology Hunan Agricultural University Changsha China
5. Crop Research Institute Hunan Academy of Agricultural Sciences Changsha China
Abstract
AbstractMetabolic 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.
Funder
National Natural Science Foundation of China
Subject
Cell Biology,Plant Science,Genetics,General Medicine,Physiology
Cited by
4 articles.
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