Demethylation of arsenic limits its volatilization in fungi
作者: Shiming SuXibai ZengQiufen FengLingyu BaiLili ZhangSheng JiangAiguo LiRan DuanXiurong WangCuixia WuYanan Wang
作者单位: 1Institute of Environment and Sustainable Development in Agriculture, Chinese Academy of Agricultural Sciences/Key Laboratory of Agro-Environment, Ministry of Agriculture, Beijing, PR China
2College of Resource and Environment, Hunan Agricultural University, Changsha, Hunan Province, PR China
3Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, PR China
刊名: Environmental Pollution, 2015, Vol.204 , pp.141-144
来源数据库: Elsevier Journal
DOI: 10.1016/j.envpol.2015.04.025
关键词: DemethylationFungiArsenicDMAXAS
英文摘要: Abstract(#br)Arsenic (As) biomethylation is increasingly being regarded as a promising method to volatize As from the environment; however, the As volatilization efficiency of most microorganisms is low. Here, the speciation transformation of dimethylarsinic acid (DMA) as an important methylation intermediate in the cells of Fusarium oxysporum CZ-8F1, Penicillium janthinellum SM-12F4, and Trichoderma asperellum SM-12F1 were investigated. These fungal strains have been certified to volatilize As from As-loaded environment. In situ X-ray absorption near edge structure (XANES) indicated that demethylation of DMA with methylarsonic acid (MMA), arsenate [As(V)], and arsenite [As(III)] as intermediates or products occurred in fungal cells after exposure to DMA for 15 days. 36.7–55.7% of the...
全文获取路径: Elsevier  (合作)
影响因子:3.73 (2012)

  • volatilization 蒸发
  • arsenic 
  • fungi 真菌
  • limits 范围