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On the right: The same bioconstructions suspended in water. These structures are extremely fragile, and even a small air bubble emitted by a diver can disperse them in the water. Sulfur-reducing bacteria are microorganisms able to reduce elemental sulfur (S 0) to hydrogen sulfide (H 2 S). [1]
Desulfovibrio vulgaris is the best-studied sulfate-reducing microorganism species; the bar in the upper right is 0.5 micrometre long.. Sulfate-reducing microorganisms (SRM) or sulfate-reducing prokaryotes (SRP) are a group composed of sulfate-reducing bacteria (SRB) and sulfate-reducing archaea (SRA), both of which can perform anaerobic respiration utilizing sulfate (SO 2−
Desulfovibrio desulfuricans is a Gram-negative sulfate-reducing bacteria. It is generally found in soil, water, and the stools of animals, although in rare cases it has been found to cause infection in humans. [2] It is particularly noted for its ability to produce methyl mercury. [3]
Desulfovibrio is a genus of Gram-negative sulfate-reducing bacteria. Desulfovibrio species are commonly found in aquatic environments with high levels of organic material, as well as in water-logged soils, and form major community members of extreme oligotrophic habitats such as deep granitic fractured rock aquifers.
The oxidation of reduced sulfur compounds is performed exclusively by Bacteria and Archaea.All the Archaea involved in this process are aerobic and belong to the Order Sulfolobales, [19] [20] characterized by acidophiles (extremophiles that require low pHs to grow) and thermophiles (extremophiles that require high temperatures to grow).
Ca. D. audaxviator is a Gram-positive sulfate-reducing microorganism. Hydrogen for this reduction comes from the radiolysis of water [5] caused by radiation from the decay chain of uranium and thorium. The radiation allows for the production of sulfur compounds that the bacteria can use as a
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