Hydrogenotroph

Hydrogenotrophs are organisms that are able to metabolize molecular hydrogen as a source of energy. An example of hydrogenotrophy is performed by carbon dioxide reducing organisms.[1] They utilize CO2 and H2 to produce methane, CH4, by the following reaction:

CO2 + 4H2 → CH4 + 2H2O

Other hydrogenotrophic metabolic pathways include acetogenesis and sulfate reduction.[2]

References

  1. ↑ Stams, J.M., and Plugge, C.M. (2010) The microbiology of methanogenesis. In Reay, D., Smith, P., and Van Amstel, A., eds. Methane and Climate Change, 14-26.
  2. ↑ Vianna, M.E., Holtgraewe S., Seyfarth, I., Conrads, G., and Horz, H.P. (2008) Quantitative analysis of three hydrogenotrophic microbial groups, methanogenic archaea, sulfate-reducing bacteria, and acetogenic bacteria, within plaque biofilms associated with human periodontal disease. Journal of Bacteriology, 190(10):3779-3785.
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