Joint effects of arsenic and cadmium on plant growth and metal bioaccumulation: A potential Cd-hyperaccumulator and As-excluder Bidens pilosa L

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	Joint effects of arsenic and cadmium on plant growth and metal bioaccumulation: A potential Cd-hyperaccumulator and As-excluder Bidens pilosa L
	Sun, YB; Zhou, QX; Liu, WT; An, J; Xu, ZQ; Wang, L; Zhou, QX, Chinese Acad Sci, Inst Appl Ecol, Key Lab Terr Ecol Proc, Shenyang 110016, Peoples R China
刊名	JOURNAL OF HAZARDOUS MATERIALS
	2009
卷号	165 期号:1-3 页码:1023-1028
关键词	Bidens PiL.sa L. Cd-hyperaccumulator Phytoremediation Co-contamination Of Cd And As Joint Effect
ISSN号	0304-3894
英文摘要	Joint effects of arsenic (As) and cadmium (Cd) on the growth of Bidens pilosa L. and its uptake and accumulation of As and Cd were investigated using the field pot-culture experiment. The results showed that single Cd (<= 25 mg kg(-1)) and As (<= 50 mg kg(-1)) treatments could promote the growth of B. pilosa, resulting in 34.5-104.4% and 21.0-43.0%, respectively, increase in the dry biomass of shoots while compared with that under the control conditions. However. under the co-contamination of As and Cd, there was an antagonistic effect on the growth of the plant. The concentrations of As and Cd accumulated in tissues of the plant increased with an increase of As and Cd in soils. In particular, the levels of Cd in stems and leaves reached 103.0 and 110.0 mg kg(-1), respectively. when soil Cd was 10 mg kg(-1). Furthermore, the BF and TF values of Cd were greater than 1.0. However, the highest content of As in roots of the plant was only 13.5 mg kg(-1) when soil As was at a high level, i.e. 125 mg kg(-1), and the TF values of As were less than 0.1, indicating that B. pilosa can be considered as a potential Cd hyperaccumulator and As excluder. The presence of As had inhibitory effects oil Cd absorption by the plant, in particular, the accumulation of Cd in stems, leaves and shoots decreased significantly, with 42.8-53.1, 49.3-66.4 and 37.6-59.5%, respectively, reduction when the level of soil As was up to 125 mg kg(-1) compared with that under no addition of As. Whereas, when Cd was added to soils, it could facilitate As accumulation in tissues of the plants and the As concentrations in shoots increased with increasing Cd spiked in soils. The interactive effects of Cd and As may be potential for phytoremediation of Cd and/or As contamination soils. (C) 2008 Elsevier B.V. All rights reserved.
学科主题	Engineering, Environmental ; Engineering, Civil ; Environmental Sciences
语种	英语
WOS记录号	WOS:000266121700137
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/321005/54151]
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, Inst Appl Ecol, Key Lab Terr Ecol Proc, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Sun, YB,Zhou, QX,Liu, WT,et al. Joint effects of arsenic and cadmium on plant growth and metal bioaccumulation: A potential Cd-hyperaccumulator and As-excluder Bidens pilosa L[J]. JOURNAL OF HAZARDOUS MATERIALS,2009,165(1-3):1023-1028.
APA	Sun, YB.,Zhou, QX.,Liu, WT.,An, J.,Xu, ZQ.,...&Zhou, QX, Chinese Acad Sci, Inst Appl Ecol, Key Lab Terr Ecol Proc, Shenyang 110016, Peoples R China.(2009).Joint effects of arsenic and cadmium on plant growth and metal bioaccumulation: A potential Cd-hyperaccumulator and As-excluder Bidens pilosa L.JOURNAL OF HAZARDOUS MATERIALS,165(1-3),1023-1028.
MLA	Sun, YB,et al."Joint effects of arsenic and cadmium on plant growth and metal bioaccumulation: A potential Cd-hyperaccumulator and As-excluder Bidens pilosa L".JOURNAL OF HAZARDOUS MATERIALS 165.1-3(2009):1023-1028.