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	EFFECTIVENESS OF APPLYING ARSENATE REDUCING BACTERIA TO ENHANCE ARSENIC REMOVAL FROM POLLUTED SOILS BY PTERIS VITTATA L
	Wang G.
	2012
关键词	phytoremediation soil remediation soil metal uptake soil microbial biomass arsenic leaching growth-promoting rhizobacteria microbial community structure contaminated soils mycorrhizal fungi brassica-juncea uptake kinetics holcus-lanatus drinking-water metal uptake heavy-metal
英文摘要	Arsenic is a common contaminant in soils and water. It is well established that the fern Pteris vittata L. is an As hyperaccumulator and therefore has potential to phyroremediate As-polluted soils. Also, it is accepted that rhizosphere microflora play an enhancing role in plant uptake of metallic elements from soils. Studies showed that hydroponiclly grown P. Vittata accumulated arsenite more than the arsenate form of As apparently because arsenate and phosphate are analogues and therefore its absorption is inhibited by phosphate. The objective of this study was to determine whether addition of five different arsenate-reducing bacteria would enhance arsenic uptake by P. vittata grown in arsenic polluted soils in a field experiment. Results showed that addition of the As reducing bacteria promoted the growth of P. vittata, increased As accumulation, activated soil insoluble As, and reduced As leaching compared to the untreated control. Plant biomass increased by 53% and As uptake by 44%. As leaching was reduced by 29% to 71% depending on the As reducing bacterium. The results in their entirety permitted some insight into the mechanisms by which the arsenate reducing bacteria enhanced the effectiveness of P. vittata to remove As from the polluted soil.
出处	International Journal of Phytoremediation
卷	14
期	1
页	89-99
收录类别	SCI
ISSN号	1522-6514
内容类型	SCI/SSCI论文
源URL	[http://ir.igsnrr.ac.cn/handle/311030/26720]
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	Wang G.. EFFECTIVENESS OF APPLYING ARSENATE REDUCING BACTERIA TO ENHANCE ARSENIC REMOVAL FROM POLLUTED SOILS BY PTERIS VITTATA L. 2012.

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