Impact of waterlogging on the uptake of arsenic by hyperaccumulator and tolerant plant

CORC > 地理科学与资源研究所 > 中国科学院地理科学与资源研究所 > 研究生部

	Impact of waterlogging on the uptake of arsenic by hyperaccumulator and tolerant plant
	Wan, Xiao-ming; Lei, Mei; Chen, Tong-bin; Yang, Jun; Zhou, Xiao-yong; Zhou, Guang-dong
刊名	CHEMISTRY AND ECOLOGY
	2015
卷号	31 期号:1 页码:53-63
关键词	redox potential speciation lead Pteris vittata arsenic Holcus lanatus
英文摘要	A significant proportion of arsenic (As)-contaminated sites are temporarily or permanently under reducing condition, which may affect phytoextraction efficiency using the As-hyperaccumulator Pteris vittata L. In this work, a pot experiment was conducted to investigate the solubility and redox species of As in soil.The uptake of As by two populations of P. vittata and As-tolerant grass Holcus lanatus under different water regimes was examined. Waterlogging decreased the redox potential from 350 to −50mV, leading to an approximately 40% reduction of As(V) to As(III) and an increased dissolved As concentration by 150%–300%. The changes in the speciation and concentration of As influenced its uptake by plants. A population collected from a temporarily waterlogged riverside in Guangxi province (GX population) had ninefold higher shoot As concentration under the waterlogged condition than that under the nonwaterlogged condition, indicating that it preferred taking up As in the form of As(III). By contrast, a population of P. vittata collected from a dry land in Yunnan province (YN population) and H. lanatus demonstrated a preference to As(V). The GX population was an appropriate species for the phytoextraction of waterlogged sites. These results implied the importance of habitat ecology on the extraction efficiency of hyperaccumulators.
关键词[WOS]	arsenic; Holcus lanatus; lead; Pteris vittata; redox potential; speciation
收录类别	SCI
语种	英语
公开日期	2015-03-09
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/31531]
专题	地理科学与资源研究所_研究生部
推荐引用方式 GB/T 7714	Wan, Xiao-ming,Lei, Mei,Chen, Tong-bin,et al. Impact of waterlogging on the uptake of arsenic by hyperaccumulator and tolerant plant[J]. CHEMISTRY AND ECOLOGY,2015,31(1):53-63.
APA	Wan, Xiao-ming,Lei, Mei,Chen, Tong-bin,Yang, Jun,Zhou, Xiao-yong,&Zhou, Guang-dong.(2015).Impact of waterlogging on the uptake of arsenic by hyperaccumulator and tolerant plant.CHEMISTRY AND ECOLOGY,31(1),53-63.
MLA	Wan, Xiao-ming,et al."Impact of waterlogging on the uptake of arsenic by hyperaccumulator and tolerant plant".CHEMISTRY AND ECOLOGY 31.1(2015):53-63.