The Desulfo-bacteria reduce sulfur, sulfates, or other sulfur compounds to H2S.
In the 1984 issue of Bergey's Manual of Systematic Bacteriology (Vol 1. page 663) there are 9 genera of sulfur-reducing bacteria. Some reduce elemental sulfur and other reduce sulfur compounds. They all produce hydrogen sulfide. Hydrogen sulfide is the gas which gives rotten or boiled eggs their characteristic odor.
Click on Genus Desulfovibrio for the diary of an attempt to isolate bacteria of this genus.
I.. Bacteia able to oxidize acetate completely to CO2 using elemental sulfur as the electron acceptor. Sulfate is never reduced. Dissimilatory sulfur-reducing bacteria.GenusDesulfuromonas
II. Bacteria capable of dissimilatory sulfate reduction. Sulfite, thiosulfate, or other oxidized sulfur compounds may also serve as electron acceptors. Dissimilatory sulfate-reducing bacteria
1. Cells are rod shaped, helical, vibrioid, or spirilloid, occasionally straight and are motile. Incomplete oxidation of lactate to acetate and carbon dioxide is common. Some strains use fatty acids that may be oxidized completely. Genus Desulfovibrio
2. Genus Desulfomonas
6 more genera to be installed later.
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