Screening of Cd-safe genotypes of Chinese cabbage in field condition and Cd accumulation in relation to organic acids in two typical genotypes under long-term Cd stress

doi:10.1007/s11356-015-4838-3

	Screening of Cd-safe genotypes of Chinese cabbage in field condition and Cd accumulation in relation to organic acids in two typical genotypes under long-term Cd stress
	Wang, Xu 1,2,3; Shi, Yi 2; Chen, Xin 2; Huang, Bin 2
刊名	ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
	2015-11-01
卷号	22 期号:21 页码:16590-16599
关键词	Cadmium Chinese Cabbage Genotype (Brassica Pekinensis L.) Organic Acid Tolerance Field Experiment Long-term Cd Stress
ISSN号	0944-1344
DOI	10.1007/s11356-015-4838-3
英文摘要	A 65-day field experiment was conducted to select cadmium (Cd)-safe genotypes (CSGs) among 21 Chinese cabbage genotypes in a low Cd-contaminated soil (0.66 mg kg(-1)). Seven CSGs were identified based on their Cd tolerance, shoot Cd concentrations, Cd enrichment factors (EFs), and translocation factors (TFs). Then, Beijingxin3, a typical CSG, together with Qiuxiang, a typical non-CSG for comparison, was selected for a subsequent 80-day field micro-plot experiment under four levels of Cd stress to evaluate the reliability of CSG screening and the role of organic acids in Cd accumulation and tolerance. Beijingxin3 was confirmed to be safe to grow in soil with Cd level up to 3.39 mg kg(-1), with Cd accumulation in its shoots well below the permitted level, and Qiuxiang was still poor in tolerating low Cd stress (1.31 mg kg(-1)). With increasing the Cd stress, Cd accumulation and citrate concentrations increased in shoots and roots of both genotypes, and oxalate concentrations increased significantly in Beijingxin3 roots. Both oxalate and citrate concentrations were significantly positively related to Cd accumulation for Beijingxin3 roots. High accumulation in oxalate and citrate induced by Cd stress in Beijingxin3 roots could benefit its internal tolerance to long-term Cd stress with more Cd accumulation in its roots and less Cd accumulation in its shoots.
WOS研究方向	Environmental Sciences & Ecology
语种	英语
出版者	SPRINGER HEIDELBERG
WOS记录号	WOS:000363964700031
内容类型	期刊论文
源URL	[http://210.72.129.5/handle/321005/122259]
专题	中国科学院沈阳应用生态研究所
通讯作者	Wang, Xu
作者单位	1.Univ Chinese Acad Sci, Beijing 100049, Peoples R China 2.Chinese Acad Sci, Inst Appl Ecol, State Key Lab Forest & Soil Ecol, Shenyang 110164, Peoples R China 3.Shenyang Agr Univ, Coll Sci, Shenyang 110866, Peoples R China
推荐引用方式 GB/T 7714	Wang, Xu,Shi, Yi,Chen, Xin,et al. Screening of Cd-safe genotypes of Chinese cabbage in field condition and Cd accumulation in relation to organic acids in two typical genotypes under long-term Cd stress[J]. ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,2015,22(21):16590-16599.
APA	Wang, Xu,Shi, Yi,Chen, Xin,&Huang, Bin.(2015).Screening of Cd-safe genotypes of Chinese cabbage in field condition and Cd accumulation in relation to organic acids in two typical genotypes under long-term Cd stress.ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH,22(21),16590-16599.
MLA	Wang, Xu,et al."Screening of Cd-safe genotypes of Chinese cabbage in field condition and Cd accumulation in relation to organic acids in two typical genotypes under long-term Cd stress".ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH 22.21(2015):16590-16599.