Cadmium tolerance and accumulation characteristics of Bidens pilosa L. as a potential Cd-hyperaccumulator

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	Cadmium tolerance and accumulation characteristics of Bidens pilosa L. as a potential Cd-hyperaccumulator
	Sun, YB; Zhou, QX; Wang, L; Liu, WT; Zhou, QX, Chinese Acad Sci, Key Lab Terrestrial Ecol Proc, Inst Appl Ecol, Shenyang 110016, Peoples R China
刊名	JOURNAL OF HAZARDOUS MATERIALS
	2009
卷号	161 期号:2-3 页码:808-814
关键词	Bidens PiL.sa L. Cd-hyperaccumulator Tolerance Bioaccumulation Factor Translocation Factor
ISSN号	0304-3894
英文摘要	Recently, researchers are becoming interested in using hyperaccumulators for decontamination of heavy metal polluted soils, whereas few species that hyperaccumulate cadmium (Cd) has been identified in the plant kingdom. In this study, the physiological mechanisms at the seedling stage and growth responses and Cd uptake and accumulation at flowering and mature stages of Bidens pilosa L. under Cd treatments were investigated. At the seedling stage, when soil Cd was lower than 16 mg kg(-1), the plant did not show obvious symptom of phytoxicity, and the alterations of chlorophyll (CHL), superoxide dismutase (SOD), peroxidase (POD), malondialdehyde (MDA), and soluble protein (SP) did not have significant differences when compared with the control. At the flowering and mature stages, under low Cd treatments (<= 16 mg kg(-1)), the application of Cd could facilitate plant growth, resulting in 3.9-11.0% and 5.9-13.8%, respectively, increase in shoots dry biomass compared with the control. The Cd concentrations in stems, leaves and shoots exceeded 100 mg kg(-1) when soil Cd was at 8 mg kg(-1), and they were positively correlated with Cd concentration in soils, the bioaccumulation factor (BF) and translocation factor (TF) values were all greater than 1.0. Thus, it is clear that B. pilosa has the basic characteristics of a Cd-hyperaccumulator. Ail the results elementarily indicated that B. pilosa is a potential Cd-hyperaccumulating plant. (C) 2008 Elsevier B.V. All rights reserved.
学科主题	Engineering ; Environmental ; Civil ; Engineering ; Environmental Sciences
语种	英语
WOS记录号	WOS:000262292400028
资助机构	Ministry of Science and Technology, People's Republic of China [2006AA06Z386]; Joint Sino-Russian Centre of Natural Resources and Eco-Environmental Science, Chinese Academy of Sciences
公开日期	2011-09-23
内容类型	期刊论文
源URL	[http://210.72.129.5/handle/321005/54275]
专题	沈阳应用生态研究所_沈阳应用生态研究所
通讯作者	Zhou, QX, Chinese Acad Sci, Key Lab Terrestrial Ecol Proc, Inst Appl Ecol, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Sun, YB,Zhou, QX,Wang, L,et al. Cadmium tolerance and accumulation characteristics of Bidens pilosa L. as a potential Cd-hyperaccumulator[J]. JOURNAL OF HAZARDOUS MATERIALS,2009,161(2-3):808-814.
APA	Sun, YB,Zhou, QX,Wang, L,Liu, WT,&Zhou, QX, Chinese Acad Sci, Key Lab Terrestrial Ecol Proc, Inst Appl Ecol, Shenyang 110016, Peoples R China.(2009).Cadmium tolerance and accumulation characteristics of Bidens pilosa L. as a potential Cd-hyperaccumulator.JOURNAL OF HAZARDOUS MATERIALS,161(2-3),808-814.
MLA	Sun, YB,et al."Cadmium tolerance and accumulation characteristics of Bidens pilosa L. as a potential Cd-hyperaccumulator".JOURNAL OF HAZARDOUS MATERIALS 161.2-3(2009):808-814.