Metabolic Profiles of Brassica juncea Roots in Response to Cadmium Stress

Brassica juncea has great application potential in phytoremediation of cadmium (Cd)-contaminated soil because of its excellent Cd accumulating and high biomass. In this study, we compared the effects of Cd under 48 h and 7 d stress in roots of Brassica juncea using metabolite profiling. The results...

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Bibliographic Details
Published in:Metabolites 2021-06, Vol.11 (6), p.383
Main Authors: Tan, Piaopiao, Zeng, Chaozhen, Wan, Chang, Liu, Zhe, Dong, Xujie, Peng, Jiqing, Lin, Haiyan, Li, Mei, Liu, Zhixiang, Yan, Mingli
Format: Article
Language:English
Subjects:
Amino acids
Apoptosis
Biosynthesis
Brassica juncea
Cadmium
cadmium stress
Carbohydrates
Discriminant analysis
Flavonoids
Heavy metals
Isoleucine
Linoleic acid
Linolenic acid
Lipids
Metabolic pathways
Metabolism
metabolite profiling
Metabolites
Metabolomics
Organic acids
pathway analysis
Physiology
Phytoremediation
Principal components analysis
Roots
Soil pollution
tRNA
Valine
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Summary:Brassica juncea has great application potential in phytoremediation of cadmium (Cd)-contaminated soil because of its excellent Cd accumulating and high biomass. In this study, we compared the effects of Cd under 48 h and 7 d stress in roots of Brassica juncea using metabolite profiling. The results showed that many metabolic pathways and metabolites in Brassica juncea roots were altered significantly in response to Cd stress. We found that significant differences in levels of amino acids, organic acids, carbohydrates, lipids, flavonoids, alkaloids, and indoles were induced by Cd stress at different times, which played a pivotal role in the adaptation of Brassica juncea roots to Cd stress. Meanwhile, Brassica juncea roots could resist 48 h Cd stress by regulating the biosynthesis of amino acids, linoleic acid metabolism, aminoacyl-tRNA biosynthesis, glycerophospholipid metabolism, ABC transporters, arginine biosynthesis, valine, leucine and isoleucine biosynthesis, and alpha-linolenic acid metabolism; however, they regulated alpha-linolenic acid metabolism, glycerophospholipid metabolism, ABC transporters, and linoleic acid metabolism to resist 7 d Cd stress. A metabolomic expedition to the response of Brassica juncea to Cd stress will help to comprehend its tolerance and accumulation mechanisms of Cd.
ISSN:2218-1989
2218-1989
DOI:10.3390/metabo11060383