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| 集胞藻(Synechocystis sp. PCC6803)对砷吸收转化特性的初步研究 | |
| 引用本文： | 张兵,王利红,徐玉新,尹西翔.集胞藻(Synechocystis sp. PCC6803)对砷吸收转化特性的初步研究[J].生态毒理学报,2011,6(6):629-633. |
| 作者姓名： | 张兵 王利红 徐玉新 尹西翔 |
| 作者单位： | 1. 山东农业大学资源与环境学院,泰安 271018;中国科学院生态环境研究中心,北京 100085 2. 山东省科学院,济南,250014 3. 山东农业大学资源与环境学院,泰安,271018 4. 中国科学院城市环境研究所,厦门,361021 |
| 基金项目： | 山东省博士基金(No.BS2009HZ024) |
| 摘 要： | 砷是一种广泛存在于环境中的有毒物质.集胞藻属于单细胞藻类,广泛分布在淡水生态环境中.采用营养液培养的方法探讨了集胞藻(Synechocystis sp.PCC6803)对砷的累积和转化特性.当集胞藻分别暴露于2和100 μM的无机As(Ⅲ)和As(Ⅴ)14 d后,体内的砷形态均以As(Ⅴ)为主,并且在100 μM浓度处... |
| 关 键 词： | 集胞藻 三价砷 五价砷 |
| 收稿时间： | 2011/3/28 0:00:00 |
| 修稿时间： | 2011/5/24 0:00:00 |
Study on Absorption and Transformation of Arsenic in Blue Alga (Synechocystis sp. PCC6803) |
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| Zhang Bing,Wang Lihong,Xu Yuxin and Yin Xixiang.Study on Absorption and Transformation of Arsenic in Blue Alga (Synechocystis sp. PCC6803)[J].Asian Journal of Ecotoxicology,2011,6(6):629-633. | |
| Authors: | Zhang Bing Wang Lihong Xu Yuxin and Yin Xixiang |
| Institution: | 1. College of Resources and Environment, Shandong Agricultural University, Taian 271000 2. Research Center for Eco-Environmental Sciences, Chinese Academy of Sciences, Beijing 100085;Shandong Academy of Sciences, Jinan 250014;College of Resources and Environment, Shandong Agricultural University, Taian 271000;Institute of Urban Environment, Chinese Academy of Sciences, Xiamen 361021 |
| Abstract: | Arsenic(As) is a highly toxic and widespread environmental contaninant.Synechocystics belongs to unicallular algae which is widely distributed in fresh-water.Synechocystis sp.PCC6803 cultivated in medium was exposed to arsenite and arsenate in order to investigate uptake,accumulation and transformation of arsenic species in Synechocystis.After exposed to both arsenite(2 μM) and arsenate(100 μM) 14 days,As(V) was the main species in Synechocystis.DMA was detected in Synechocystis treated with arsenate at 100 μM.The result showed that mechanisms of arsenic reduction and oxidation were present in Synechocystis simultaneously,and mechanisms of arsenic methylation only can be induced at high concentration of arsenate.The kinetics of arsenite and arsenate uptake of Synechocystise showed that the the uptake rate of As(Ⅲ) was faster than that of As(V),while the affinity of As(V) was higher than that of As(Ⅲ) in Synechocystis.Purification effect of Synechocystis for arsenic solution was studied as well.Purification efficiency of Synechocystis can reach 41% in 72 hours,that clarified Synechocystis have the ability to repair arsenic pollution water. |
| Keywords: | Synechocystis arsenite arsenate |
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