The responses of Arabidopsis thaliana to cadmium exposure explored via metabolite profiling

	The responses of Arabidopsis thaliana to cadmium exposure explored via metabolite profiling
	Sun, Xiumei; Zhang, Jixiu; Zhang, Haijun; Ni, Yuwen; Zhang, Qing; Chen, Jiping; Guan, Yafeng
刊名	chemosphere
	2010-02-01
卷号	78 期号:7 页码:840-845
关键词	Arabidopsis thaliana Heavy metals Oxidative stress Metabolite profiling
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.
WOS标题词	science & technology ; life sciences & biomedicine
类目[WOS]	environmental sciences
研究领域[WOS]	environmental sciences & ecology
关键词[WOS]	heavy-metal stress ; raffinose family oligosaccharides ; membrane-lipid-composition ; oxidative stress ; amino-acids ; plants ; mechanisms ; tolerance ; phytochelatins ; metabolomics
收录类别	SCI
语种	英语
WOS记录号	WOS:000274666800009
公开日期	2015-11-17
内容类型	期刊论文
源URL	[http://159.226.238.44/handle/321008/141889]
专题	大连化学物理研究所_中国科学院大连化学物理研究所
作者单位	Chinese Acad Sci, Dalian Inst Chem Phys, Dalian 116023, Peoples R China
推荐引用方式 GB/T 7714	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.
APA	Sun, Xiumei.,Zhang, Jixiu.,Zhang, Haijun.,Ni, Yuwen.,Zhang, Qing.,...&Guan, Yafeng.(2010).The responses of Arabidopsis thaliana to cadmium exposure explored via metabolite profiling.chemosphere,78(7),840-845.
MLA	Sun, Xiumei,et al."The responses of Arabidopsis thaliana to cadmium exposure explored via metabolite profiling".chemosphere 78.7(2010):840-845.