Sulfate-reducing bacteria
（重定向自Sulfate reducing bacteria）
![Desulfovibrio vulgaris is the best-studied sulfate-reducing bacteria species; the bar in the upper right is 0.5 micrometre long.](/Images/godic/202502/14/Dvulgaris_micrograph4832.JPG")
![Sludge from a pond; the black color is due to metal sulfides that result from the action of sulfate-reducing bacteria.](/Images/godic/202502/14/Teichschlamm14832.jpg")
![Corrosion dans des conditions anaérobies provoquées par des bactéries du genre Desulfovibrio](/Images/godic/202502/14/Bacterial_Anaerobic_Corrosion-fr.svg4832.png")
Sulfate-reducing bacteria are those bacteria and archaea that can obtain energy by oxidizing organic compounds or molecular hydrogen (H2) while reducing sulfate (SO2−
4) to hydrogen sulfide (H2S). In a sense, these organisms "breathe" sulfate rather than oxygen in a form of anaerobic respiration.