Effects of Se on the uptake of essential elements in Pteris vittata L.

	Effects of Se on the uptake of essential elements in Pteris vittata L.
	Feng, Renwei 1,2; Wei, Chaoyang 1; Tu, Shuxin 2; Wu, Fengchang 3
刊名	PLANT AND SOIL
	2009-12-01
卷号	325 期号:1-2 页码:123-132
关键词	Dual Effects Fe Inhibition Regulation Stimulation
文献子类	Article
英文摘要	Selenium has been proven to be an antioxidant in plants at low dosages. To understand better the mechanisms of Se toxicity and benefit to plants, more investigations about effects of Se on the uptake of essential elements in plants would be desirable. In this study, hydroponic (nutrient solution culture) and pot (soil culture) experiments were simultaneously conducted to investigate the effects of Se on the uptake and distribution of essential elements in Pteris vittata. L (Chinese brake fern), an arsenic (As)-hyperaccumulator and a selenium (Se)-accumulator. Chinese brake fern took up much more Se in nutrient solution culture than in soil culture, with the highest Se content recorded as 1,573 mg kg(-1) in the roots, demonstrating remarkable tolerance to Se. In soil culture, Chinese brake fern also accumulated high content of Se, with the highest content measured as 81 mg kg(-1) and 233 mg kg(-1), in the fronds and roots, respectively. In soil culture, the addition of Se suppressed the uptake of most measured elements, including magnesium (Mg), potassium (K), phosphorus (P), iron (Fe), copper (Cu) and zinc (Zn). In nutrient solution culture, when the Se content in the tissues of Chinese brake fern was relatively low, the supplementation of Se suppressed the uptake of most essential elements; however, with the increase of Se content, stimulation effects of Se on the uptake of Ca, Mg, K were observed. An initial decrease followed by a rapid increase of Fe content in the fronds of Chinese brake fern was found with Se addition and tissue Se content increasing in nutrient solution culture, suggesting antagonistic and synergic roles of Se on these elements under low and high Se exposure, respectively. We suggest that Ca, Mg, K may be involved in the tolerance mechanism of Se, and that the regulation of Fe accumulation by Se in the fronds might be partially due to the dual effects of Se on Chinese brake fern.
WOS关键词	OXIDATIVE STRESS ; HYDROPONIC CONDITIONS ; ARSENIC ACCUMULATION ; WHITE CLOVER ; PEA-PLANTS ; SELENIUM ; GROWTH ; ANTIOXIDANT ; NUTRITION ; PHOSPHATE
语种	英语
出版者	SPRINGER
WOS记录号	WOS:000272383900011
内容类型	期刊论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/67945]
专题	中国科学院地理科学与资源研究所
通讯作者	Wei, Chaoyang
作者单位	1.Chinese Acad Sci, Inst Geog Sci & Nat Resources Res, Beijing 100101, Peoples R China 2.Huazhong Agr Univ, Coll Resources & Environm, Wuhan 430070, Peoples R China 3.Chinese Res Inst Environm Sci, Beijing 100012, Peoples R China
推荐引用方式 GB/T 7714	Feng, Renwei,Wei, Chaoyang,Tu, Shuxin,et al. Effects of Se on the uptake of essential elements in Pteris vittata L.[J]. PLANT AND SOIL,2009,325(1-2):123-132.
APA	Feng, Renwei,Wei, Chaoyang,Tu, Shuxin,&Wu, Fengchang.(2009).Effects of Se on the uptake of essential elements in Pteris vittata L..PLANT AND SOIL,325(1-2),123-132.
MLA	Feng, Renwei,et al."Effects of Se on the uptake of essential elements in Pteris vittata L.".PLANT AND SOIL 325.1-2(2009):123-132.