Microbial Arsenic Methylation in Soil and Uptake and Metabolism of Methylated Arsenic in Plants: A Review

被引：55
作者：
Di, Xuerong [1 ,2 ]
Beesley, Luke [3 ]
Zhang, Zulin [3 ,4 ]
Zhi, Suli [1 ]
Jia, Yan [2 ]
Ding, Yongzhen [1 ]
机构：
[1] Minist Agr & Rural Affairs, Agroenvironm Protect Inst, Tianjin 300191, Peoples R China
[2] Chinese Acad Sci, Inst Proc Engn, Beijing 100190, Peoples R China
[3] James Hutton Inst, Aberdeen AB15 8QH, Scotland
[4] Wuhan Univ Technol, State Key Lab Silicate Mat Architectures, Hubei Key Lab Mineral Resources Proc & Environm, Sch Resources & Environm Engn, Wuhan 430070, Peoples R China
来源：
INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH | 2019年 / 16卷 / 24期
基金：
美国国家科学基金会;
关键词：
arsenic methylation; arsenic volatilization; microbes; bioremediation; S-ADENOSYLMETHIONINE METHYLTRANSFERASE; TRIMETHYLARSINE GAS; PSEUDOMONAS-PUTIDA; RICE; VOLATILIZATION; SPECIATION; TOXICITY; ACCUMULATION; BIOVOLATILIZATION; DIMETHYLARSENATE;
D O I：
10.3390/ijerph16245012
中图分类号：
X [环境科学、安全科学];
学科分类号：
08 ; 0830 ;
摘要：
Arsenic (As) poses a risk to the human health in excess exposure and microbes play an important role in the toxicity of As. Arsenic methylation mediated by microbes is a key driver of As toxicity in the environment and this paper reviews the role of microbial arsenic methylation and volatilization in the biogeochemical cycle of arsenic. In specific, little is presently known about the molecular mechanism and gene characterization of arsenic methylation. The uptake of methylated arsenic in plants is influenced by microbial arsenic methylation in soil, thus enhancing the volatilization of methylated arsenic is a potential mitigation point for arsenic mobility and toxicity in the environment. On the other hand, the potential risk of methylated arsenic on organisms is also discussed. And the directions for future research, theoretical reference for the control and remediation of arsenic methylation, are presented.
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页数：13
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