Arsenic(III) Fuels Anoxygenic Photosynthesis in Hot Spring Biofilms from Mono Lake, California

@article{Kulp2008ArsenicIIIFA,
  title={Arsenic(III) Fuels Anoxygenic Photosynthesis in Hot Spring Biofilms from Mono Lake, California},
  author={T. R. Kulp and S. Hoeft and M. Asao and M. Madigan and J. Hollibaugh and J. Fisher and J. Stolz and C. Culbertson and L. Miller and R. Oremland},
  journal={Science},
  year={2008},
  volume={321},
  pages={967 - 970}
}
Phylogenetic analysis indicates that microbial arsenic metabolism is ancient and probably extends back to the primordial Earth. In microbial biofilms growing on the rock surfaces of anoxic brine pools fed by hot springs containing arsenite and sulfide at high concentrations, we discovered light-dependent oxidation of arsenite [As(III)] to arsenate [As(V)] occurring under anoxic conditions. The communities were composed primarily of Ectothiorhodospira-like purple bacteria or Oscillatoria-like… Expand
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