Sulfate-reducing microorganisms or sulfate-reducing prokaryotes are a group composed of sulfate-reducing bacteria and sulfate-reducing archaea, both of which can perform anaerobic respiration utilizin
Desulfovibrio vulgaris is the best-studied sulfate-reducing microorganism species; the bar in the upper right is 0.5 micrometre long.
Sludge from a pond; the black color is due to metal sulfides that result from the action of sulfate-reducing microorganisms.
Hydrogen sulfide
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Hydrogen sulfide or hydrogen sulphide is a chemical compound with the formula H2S. It is a colorless, toxic, and flammable hydrogen chalcogenide gas. Trace amounts in the ambient atmosphere have a cha
Sulfate-reducing microorganism
…sulfate-reducing archaea (SRA), both of which can perform anaerobic respiration utilizing sulfate (SO2− 4) as terminal electron acceptor, reducing it to hydrogen sulfide (H2S). Therefore, these sulfidogenic microorganisms "breathe" sulfate rather than molecular oxygen (O2), which is the terminal electron acceptor reduced…
Deposit of sulfur on a rock, caused by volcanic gas
A hydrogen sulfide bloom (green) stretching for about 150 km (93 mi) along the coast of Namibia. As oxygen-poor water reaches the coast, bacteria in the organic-matter rich sediment produce hydrogen sulfide, which is toxic to fish.