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	Arsenic hyperaccumulator Pteris vittata L. and its arsenic accumulation
	Chen T. B. ; Wei C. Y. ; Huang Z. C. ; Huang Q. F. ; Lu Q. G. ; Fan Z. L.
	2002
英文摘要	An arsenic hyperaccumulator Pteris vittata L. (Chinese brake) was first discovered in China by means of field survey and greenhouse cultivation. Field survey showed that Chinese brake had large accumulating capacity to arsenic ; the orders of arsenic content in different parts of the fern were as follows: leaves>leafstalks>roots, which is totally different from that of ordinary plants; bioaccamulation coefficients of the above ground parts of the fern decreased as a power function of soil arsenic contents. In the control of pot trials with normal unpolluted soil containing 9 mg/kg of arsenic, the bioaccumulation coefficients of the above ground parts and rhizoids of Chinese brake were as high as 71 and 80 respectively. Greenhouse cultivation in the contaminated soil from mining areas has shown that more than 1 times greater arsenic can be accumulated in the leaves of the fern than that of field samples with the largest content of 5070 mg/kg As on a dry matter basis. During greenhouse cultivation, arsenic content in the leaves of the fern increased linearly with time prolonging. Not only has Chinese brake extraordinary tolerance and accumulation to arsenic, but it grew rapidly with great biomass, wide distribution and easy adaptation to different environmental conditions as well. Therefore, it has great potential in future remediation of arsenic contamination. It also demonstrates important value for studies of arsenic physiology and biochemistry such as arsenic absorption, translocation and detoxification mechanisms in plants.
出处	Chinese Science Bulletin
卷	47
期	11
页	902-905
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/311030/24216]
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.,Wei C. Y.,Huang Z. C.,et al. Arsenic hyperaccumulator Pteris vittata L. and its arsenic accumulation. 2002.

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