Accumulation and Transformation of Arsenic in the Blue-Green Alga Synechocysis sp PCC6803

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	Accumulation and Transformation of Arsenic in the Blue-Green Alga Synechocysis sp PCC6803
	Yin, Xi-Xiang ; Wang, L. H. ; Bai, R. ; Huang, H. ; Sun, Guo-Xin
刊名	WATER AIR AND SOIL POLLUTION
	2012
卷号	223 期号:3 页码:1183－1190
关键词	Arsenic Tolerance Accumulation Metabolism Remediation Synechocysis sp PCC6803
ISSN号	0049-6979
中文摘要	Synechocysis sp. PCC6803 is a unicellular blue alga which ubiquitously exists in aquatic system and is considered to play a role in arsenic cycling. Our results showed that Synechocysis can accumulate arsenic as much as 1.0 and 0.9 gkg(-1) DW when exposed to 0.5 mM arsenate and arsenite for 14 days, respectively. In addition, arsenic species in cells were assayed under different exposure conditions and it was found that inorganic arsenic, including arsenate and arsenite, is the dominant species. Organic methylated arsenicals can only be detected exposed to higher arsenic concentration range (100-500 mu M). Arsenate is the dominant arsenic species and presents more than 80% of the total arsenic in cells. Efflux of both arsenate and arsenite was observed. When treated with 2.67 mu M arsenite, Synechocysis can rapidly oxidize arsenite to arsenate and accumulate As rapidly. The observed arsenic oxidation in solute is solely caused by cellular oxidation. Given the robust ability of As accumulation, it can serve as a phytoremediation organism to efficiently remove arsenic from aquatic environments.
WOS记录号	WOS:000303385500021
公开日期	2014-11-05
内容类型	期刊论文
源URL	[http://ir.rcees.ac.cn/handle/311016/7855]
专题	生态环境研究中心_城市与区域生态国家重点实验室
推荐引用方式 GB/T 7714	Yin, Xi-Xiang,Wang, L. H.,Bai, R.,et al. Accumulation and Transformation of Arsenic in the Blue-Green Alga Synechocysis sp PCC6803[J]. WATER AIR AND SOIL POLLUTION,2012,223(3):1183－1190.
APA	Yin, Xi-Xiang,Wang, L. H.,Bai, R.,Huang, H.,&Sun, Guo-Xin.(2012).Accumulation and Transformation of Arsenic in the Blue-Green Alga Synechocysis sp PCC6803.WATER AIR AND SOIL POLLUTION,223(3),1183－1190.
MLA	Yin, Xi-Xiang,et al."Accumulation and Transformation of Arsenic in the Blue-Green Alga Synechocysis sp PCC6803".WATER AIR AND SOIL POLLUTION 223.3(2012):1183－1190.