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

Dates

Year
2008

Citation

Kulp, T R, Hoeft, S E, Asao, M, Madigan, M T, Hollibaugh, J T, Fisher, J C, Stolz, J F, Culbertson, C W, Miller, L G, and Oremland, R S, 2008, Arsenic(III) Fuels Anoxygenic Photosynthesis in Hot Spring Biofilms from Mono Lake, California: Science, v. 321, iss. 5891, p. 967-970.

Summary

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 cyanobacteria. A pure culture of a photosynthetic bacterium grew as a photoautotroph when As(III) was used as the sole photosynthetic electron donor. The strain contained genes encoding a putative As(V) reductase but no detectable homologs of the [...]

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  • USGS National Research Program

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Added to ScienceBase on Fri Apr 19 10:35:40 MDT 2013 by processing file <b>Microbial Biogeochemistry of Aquatic Environments.xml</b> in item <a href="https://www.sciencebase.gov/catalog/item/504216b7e4b04b508bfd3347">https://www.sciencebase.gov/catalog/item/504216b7e4b04b508bfd3347</a>

Additional Information

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Type Scheme Key
DOI http://sciencebase.gov/vocab/identifierScheme 10.1126/science.1160799

Citation Extension

journalScience
parts
typePages
value967-970
typeVolume
value321
typeIssue
value5891
citationTypeJournal Article

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