The Desulfo-bacteria reduce sulfur, sulfates, or other sulfur compounds to H2S.
Bergey's Manual of Systematic Bacteriology (Vol 1. page 666. (1984)) has additional information. This genus has 9 species which differ considerably in size and biochemical capabilities. Beginners should find it fairly easy to isolate strains of this genus in any geographic area. They are found in the anaerobic bottom muds of freshwater, brackish, and marine sites.
Click on Genus Desulfovibrio for the diary of an attempt to isolate bacteria of this genus.
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
Concentration, grams/ liter
|Medium B||Medium C||Medium D|
|MgSO4 . 7 H2O||2.0||2.0||---|
|CaCl2 . 2H2O||---||0.06||0.1|
|FeSO4 . 7 H2O||0.5||0.004||0.004|
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