Concurrent methylation and demethylation of arsenic by fungi and their differential expression in the protoplasm proteome
作者: Shiming SuXibai ZengLingyu BaiYanan WangLili ZhangMansheng LiCuixia Wu
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
2Shanghai Synchrotron Radiation Facility, Shanghai Institute of Applied Physics, Chinese Academy of Sciences, Shanghai, PR China
3Beijing Proteome Research Center, Beijing, PR China
刊名: Environmental Pollution, 2017, Vol.225 , pp.620-627
来源数据库: Elsevier Journal
DOI: 10.1016/j.envpol.2017.03.030
关键词: DemethylationMMA(V)XANESFungiiTRAQ
英文摘要: Abstract(#br)Microbial methylation and demethylation are central to arsenic's (As) biogeochemical cycling. Here, the transformations of monomethylarsonic acid (MMA(V)) (50 mg L −1 ) for 15 days in cells of As-methylating fungi, Fusarium oxysporum CZ-8F1, Penicillium janthinellum SM-12F4, and Trichoderma asperellum SM-12F1, were evaluated, and trace concentrations of As(III) and As(V) were observed in fungal cell extracts. Trace amounts of DMA(V) were also detected in MMA(V) and P . janthinellum SM-12F4 incubations. In situ X-ray absorption near edge structure (XANES) indicated that after exposure to MMA(V) (500 mg L −1 ) for 15 days, 28.6–48.6% of accumulated As in fungal cells was DMA(V), followed by 18.4–30.3% from As(V), 0–28.1% from As(III), and 4.8–28.9% from MMA(V). The concurrent...
全文获取路径: Elsevier  (合作)
影响因子:3.73 (2012)

  • protoplasm 原生质
  • demethylation 脱甲基
  • arsenic 
  • differential 差动的
  • expression 表示
  • fungi 真菌
  • their 他们的