Archives of Microbiology

, Volume 166, Issue 3, pp 184–192

Disproportionation of inorganic sulfur compounds by the sulfate-reducing bacterium Desulfocapsa thiozymogenes gen. nov., sp. nov.

Authors

  • P. H. Janssen
    • Max-Planck-Institut für terrestrische Mikrobiologie, Karl-von-Frisch-Strasse, D-35043 Marburg, Germany Tel. +49-6421-178830; Fax +49-6421-178809
  • Alexandra Schuhmann
    • Max-Planck-Institut für terrestrische Mikrobiologie, Karl-von-Frisch-Strasse, D-35043 Marburg, Germany Tel. +49-6421-178830; Fax +49-6421-178809
  • F. Bak
    • Max-Planck-Institut für terrestrische Mikrobiologie, Karl-von-Frisch-Strasse, D-35043 Marburg, Germany Tel. +49-6421-178830; Fax +49-6421-178809
  • Werner Liesack
    • Max-Planck-Institut für terrestrische Mikrobiologie, Karl-von-Frisch-Strasse, D-35043 Marburg, Germany Tel. +49-6421-178830; Fax +49-6421-178809
Original paper

DOI: 10.1007/s002030050374

Cite this article as:
Janssen, P., Schuhmann, A., Bak, F. et al. Arch Microbiol (1996) 166: 184. doi:10.1007/s002030050374

Abstract

A new strictly anaerobic, gram-negative bacterium was isolated from the sediment of a freshwater lake after enrichment with thiosulfate as the energy source. The strain, named Bra2 (DSM 7269), is able to grow by disproportionation of thiosulfate or sulfite to sulfate plus sulfide. Elemental sulfur is also disproportionated to sulfate and sulfide, but this only supports growth if free sulfide is chemically removed from the culture, e.g., by precipitation with amorphous ferric hydroxide. Growth is also possible by coupling the reduction of sulfate to sulfide with the oxidation of ethanol, propanol, or butanol to the corresponding fatty acid. The cells are rod-shaped, motile, and have genomic DNA with a mol% G+C content of 50.7. Cytochromes are present, but desulfoviridin is not. The new strain was shown to be related to, but distinct from members of the genus Desulfobulbus on the basis of physiological characteristics and by comparative sequence analysis of its 16S rDNA. Strain Bra2 is described as the type strain of a new taxon, Desulfocapsa thiozymogenes gen. nov., sp. nov.

Key words SulfurThiosulfateSulfiteDisproportionation (thiosulfatesulfite)SulfatereductionFerric ironDesulfocapsa thiozymogenesDesulfobulbus

Copyright information

© Springer-Verlag Berlin Heidelberg 1996