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Cyanobacteria-Mediated Arsenic Redox Dynamics Is Regulated by Phosphate in Aquatic Environments
Zhang, Siyu; Rensing, Christopher; Zhu, Yong-Guan
2014
Source PublicationENVIRONMENTAL SCIENCE & TECHNOLOGY
ISSN0013-936X
Volume48Issue:2Pages:994-1000
AbstractStudies of cyanobacteria in environments where. arsenic (As) and phosphate (P) both occur in significant concentrations have so far only,focused on the effect of P on As(V) toxicity and bioaccumulation,. with little attention to the influence of P on As redox transformations.. Our study revealed that As(III) oxidation by Synechocystis appeared to be more effective with increased P levels. We demonstrated that the higher As(III) percentage in the medium under P-limited conditions was due to enhanced As(V) uptake and the subsequent efflux of intracellularly reduced As(III) which in turn contributed to higher As(III) concentrations in the medium. Arsenic redox changes by Synechocystis under p-limited conditions is a dynamic cyclic process. that includes the following: surface As(III) oxidation (either in the periplasm or near the outer membrane), As(V)uptake, intracellular As (V) reduction, and As(III) efflux. These observations not only expand our understanding of how P influences microbial As redox metabolisms but also provide insights into the biogeochemical coupling between As and P in As contaminated eutrophic aquatic environments and artificial wetland-paddy fields.
Department城市与区域生态国家重点实验室
Citation statistics
Document Type期刊论文
Identifierhttps://ir.rcees.ac.cn/handle/311016/9131
Collection城市与区域生态国家重点实验室
土壤环境科学实验室
Recommended Citation
GB/T 7714
Zhang, Siyu,Rensing, Christopher,Zhu, Yong-Guan. Cyanobacteria-Mediated Arsenic Redox Dynamics Is Regulated by Phosphate in Aquatic Environments[J]. ENVIRONMENTAL SCIENCE & TECHNOLOGY,2014,48(2):994-1000.
APA Zhang, Siyu,Rensing, Christopher,&Zhu, Yong-Guan.(2014).Cyanobacteria-Mediated Arsenic Redox Dynamics Is Regulated by Phosphate in Aquatic Environments.ENVIRONMENTAL SCIENCE & TECHNOLOGY,48(2),994-1000.
MLA Zhang, Siyu,et al."Cyanobacteria-Mediated Arsenic Redox Dynamics Is Regulated by Phosphate in Aquatic Environments".ENVIRONMENTAL SCIENCE & TECHNOLOGY 48.2(2014):994-1000.
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