Uptake of mercury (Hg) by seedlings of rice (Oryza sativa L.) grown in solution culture and interactions with arsenate uptake

doi:10.1016/j.envexpbot.2004.05.001

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	Uptake of mercury (Hg) by seedlings of rice (Oryza sativa L.) grown in solution culture and interactions with arsenate uptake
	Liu, WJ; Du, X; Zhu, YG; Zhao, XS
刊名	ENVIRONMENTAL AND EXPERIMENTAL BOTANY
	2005
卷号	54 期号:1 页码:1-7
关键词	Arsenic Hydroponics Interaction Mercury Rice
DOI	10.1016/j.envexpbot.2004.05.001
英文摘要	We investigated the mercury (Hg) uptake by seedlings of rice (Oryza sativa L.) grown in solution and interactions between Hg and arsenate uptake. The results showed that increasing Hg2+ concentrations in the nutrient solution decreased both root and shoot biomass. Hg2+ at concentrations of 1.0 and 2.5 mg L-1 caused 50% reduction in root biomass. A 50% reduction in shoot biomass occurred at Hg2+ concentrations of around 0.5 mg L-1. Nevertheless, 0.5 mg As L-1 has no significant effect on plant yield. Hg accumulated in rice roots, and the Hg concentration factor in roots reached nearly 1900 at 2.5 mg Hg L-1. The addition of As slightly increased the Hg concentration in the roots. However, As concentrations in the roots decreased significantly with increasing Hg concentration in the growth solution to 1.0 or 2.5 mg Hg L-1. Shoot As concentrations decreased with increasing Hg concentrations in the growth solution, but increased again with further increase in Hg concentration to 2.5 mg L-1. Possible mechanisms of Hg uptake and interactions between Hg and As in the uptake process are also discussed. (c) 2004 Elsevier B.V All rights reserved.
学科主题	Plant Sciences ; Environmental Sciences & Ecology
WOS研究方向	Plant Sciences ; Environmental Sciences & Ecology
WOS记录号	WOS:000230237400001
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/23358]
专题	生态环境研究中心_土壤环境科学实验室
推荐引用方式 GB/T 7714	Liu, WJ,Du, X,Zhu, YG,et al. Uptake of mercury (Hg) by seedlings of rice (Oryza sativa L.) grown in solution culture and interactions with arsenate uptake[J]. ENVIRONMENTAL AND EXPERIMENTAL BOTANY,2005,54(1):1-7.
APA	Liu, WJ,Du, X,Zhu, YG,&Zhao, XS.(2005).Uptake of mercury (Hg) by seedlings of rice (Oryza sativa L.) grown in solution culture and interactions with arsenate uptake.ENVIRONMENTAL AND EXPERIMENTAL BOTANY,54(1),1-7.
MLA	Liu, WJ,et al."Uptake of mercury (Hg) by seedlings of rice (Oryza sativa L.) grown in solution culture and interactions with arsenate uptake".ENVIRONMENTAL AND EXPERIMENTAL BOTANY 54.1(2005):1-7.