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题名: The responses of Arabidopsis thaliana to cadmium exposure explored via metabolite profiling
作者: Sun, Xiumei1;  Zhang, Jixiu1;  Zhang, Haijun1;  Ni, Yuwen1;  Zhang, Qing1;  Chen, Jiping1;  Guan, Yafeng1
关键词: Arabidopsis thaliana ;  Heavy metals ;  Oxidative stress ;  Metabolite profiling
刊名: CHEMOSPHERE
发表日期: 2010-02-01
DOI: 10.1016/j.chemosphere.2009.11.045
卷: 78, 期:7, 页:840-845
收录类别: SCI
文章类型: Article
WOS标题词: Science & Technology ;  Life Sciences & Biomedicine
类目[WOS]: Environmental Sciences
研究领域[WOS]: Environmental Sciences & Ecology
英文摘要: The metabolic responses of Arabidopsis thaliana to cadmium exposure was characterized in this study. A. thaliana was cultivated in medium contaminated with different cadmium concentrations (0, 5 and 50 mu M, respectively) for 2 weeks. Metabolite analyses were performed using gas chromatography-mass spectrometry. More than 80 metabolites characterized by retention time indices and specific mass fragments were identified. The levels of carbohydrates, organic acids, amino acids, and other stress-responsive metabolites changed under cadmium stress. Treated plants showed increased levels of Ala, beta-ala, Pro, Set, putrescine, Suc and other metabolites with compatible solute-like properties, notably 4-aminobutyric acid, glycerol, raffinose and trehalose, compared to control (untreated) plants. Studies indicated that concentrations of antioxidants (alfa-tocopherol, campesterol, beta-sitosterol and isoflavone) also increased significantly. These results confirm the important role of antioxidant defences in the mechanisms of plant-resistance to cadmium stress. Our results suggested that metabolic profiling is a powerful tool that can rapidly classify environmentally modified plants and simplify the process of cadmium-stress responses. These data will be helpful for better understanding of mechanisms of plant adaptation to cadmium stress at the metabolite level. (C) 2009 Elsevier Ltd. All rights reserved.
关键词[WOS]: HEAVY-METAL STRESS ;  RAFFINOSE FAMILY OLIGOSACCHARIDES ;  MEMBRANE-LIPID-COMPOSITION ;  OXIDATIVE STRESS ;  AMINO-ACIDS ;  PLANTS ;  MECHANISMS ;  TOLERANCE ;  PHYTOCHELATINS ;  METABOLOMICS
语种: 英语
WOS记录号: WOS:000274666800009
Citation statistics: 
内容类型: 期刊论文
URI标识: http://cas-ir.dicp.ac.cn/handle/321008/141889
Appears in Collections:中国科学院大连化学物理研究所_期刊论文

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作者单位: 1.Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China

Recommended Citation:
Sun, Xiumei,Zhang, Jixiu,Zhang, Haijun,et al. The responses of Arabidopsis thaliana to cadmium exposure explored via metabolite profiling[J]. CHEMOSPHERE,2010,78(7):840-845.
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