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	Interactive effects of selenium and arsenic on their uptake by Pteris vittata L. under hydroponic conditions
	Feng R. W. ; Wei C. Y. ; Tu S. X. ; Sun X.
	2009
关键词	Arsenic Antagonistic Chinese brake fern Interactive effects Selenium Orthogonal rotation regression design chinese brake fern oxidative stress supplementation accumulation phosphorus growth antioxidant ryegrass clover plants
英文摘要	The interactive effects of selenium (Se) and arsenic (As) on plant uptake of Se and As have rarely been documented. In this study, the interactive effects of As and Se on their uptake by Chinese brake fern (Pteris vittata), an As-hyperaccumulator and Se-accumulator, were explored in two hydroponic experiments based on a two-factor, five-level central composite design. At Se levels of less than 2.5 mgL(-1), increasing amounts of As stimulated the uptake of Se in Chinese brake fern roots, possibly because of the beneficial effects of Se. In contrast, at Se concentrations greater than 2.5 mgL(-1), As suppressed the uptake of Se in Chinese brake fern roots. Uptake of As by both fronds and roots of Chinese brake fern was suppressed by the addition of Se, indicating the antagonistic effects of Se on As. in addition, at Se concentrations of less than 2.5 mgL(-1), As stimulated the translocation of Se from roots to fronds; meanwhile, the addition of Se resulted in reduced translocation of As from roots to fronds. These findings demonstrate the interactive effects of As and Se on their uptake by Chinese brake fern. (C) 2008 Elsevier B.V. All rights reserved.
出处	Environmental and Experimental Botany
卷	65
期	2-3
页	363-368
收录类别	SCI
语种	英语
ISSN号	0098-8472
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/24039]
专题	地理科学与资源研究所_历年回溯文献
推荐引用方式 GB/T 7714	Feng R. W.,Wei C. Y.,Tu S. X.,et al. Interactive effects of selenium and arsenic on their uptake by Pteris vittata L. under hydroponic conditions. 2009.

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