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	Cellular distribution of arsenic and other elements in hyperaccumulator Pteris nervosa and their relations to arsenic accumulation
	Chen T. B. ; Huang Z. C. ; Huang Y. Y. ; Xie H. ; Liao X. U.
	2003
关键词	hyperaccumulator Pteris nervosa arsenic element microanalysis SRXRF localization vittata compartmentation phosphorus speciation phosphate cadmium fern zinc
英文摘要	Synchrotron radiation X-ray fluorescence spectroscopy (SRXRF) was used to study the cellular distributions of arsenic and other elements in root, petiole, pinna of a newly discovered arsenic hyperaccumulator, Pteris nervosa. It was shown that there was a trend in P. nervosa to transport arsenic from cortex tissue to vascular tissue in root, and keep arsenic in vascular during transportation in petiole, and transport arsenic from vascular tissue to adaxial cortex tissues in midrib of pinnae. More arsenic was accumulated in mesophyll than in epidermis in pinnae. The distributions of some elements, such as K, Ca, Mn, Fe, Cu, Zn, in petiole, midrib and pinna were similar to that of arsenic, indicating that those cations might cooperate with arsenic in those transportation processes; whereas the distributions of Cl and Br in pinna were the reverse of that of arsenic, indicating that those anions might compete with arsenic in pinna of P. nervosa.
出处	Chinese Science Bulletin
卷	48
期	15
页	1586-1591
收录类别	SCI
语种	英语
ISSN号	1001-6538
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/24217]
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	Chen T. B.,Huang Z. C.,Huang Y. Y.,et al. Cellular distribution of arsenic and other elements in hyperaccumulator Pteris nervosa and their relations to arsenic accumulation. 2003.

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