Dissulfuribacter thermophilus
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| Dissulfuribacter thermophilus | |
|---|---|
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| Cell morphology of Dissulfuribacter thermophilus | |
Scientific classification  | |
| Domain: | Bacteria |
| Kingdom: | Pseudomonadati |
| Phylum: | Thermodesulfobacteriota |
| Class: | Dissulfuribacteria |
| Order: | Dissulfuribacterales |
| Family: | Dissulfuribacteraceae |
| Genus: | Dissulfuribacter |
| Species: | D. thermophilus |
| Binomial name | |
| Dissulfuribacter thermophilus Slobodkin et al., 2013 | |
Dissulfuribacter thermophilus is a thermophilic, autotrophic, sulfur-disproportionating bacterium with Gram-negative staining, short rod shape, and a single flagellum. The species is notable for its ability to disproportionate elemental sulfur at high temperatures combined with the inability to perform dissimilatory sulfate reduction.[1] The type strain of this species, Dissulfuribacter thermophilus S69T, was isolated from an active deep-sea hydrothermal vent.[2]
The type strain S69T ( = DSM 25762T = VKM B-2760T)[2] was isolated from a chimney of an active deep-sea hydrothermal vent in the depth of 1910 m at Mariner hydrothermal field[3][4] on the Valu Fa Ridge in the Lau Basin, South Pacific Ocean. The collection was carried out in June 2009 using WHOI's ROV JASON II during a research cruise of the oceanographic vessel RV Thomas Thompson.[1][5] Description of the species was published in the International Journal of Systematic and Evolutionary Microbiology of the Microbiology Society in June 2013.[1]
Taxonomy
D. thermophilus is the only formally described species of the genus Dissulfuribacter, family Dissulfuribacteraceae, order Dissulfuribacterales, and class Dissulfuribacteria within the phylum Desulfobacterota.[6]
Morphology and ultrastructure
D. thermophilus grows as single cells or in pairs. The cells are 1.0–2.5 μm in length and 0.4–0.6 μm in diameter with a single polar flagellum. Formation of endospores was not observed. The cell wall type is Gram-negative.[1]
Metabolism
D. thermophilus uses elemental sulfur, thiosulfate, or sulfite as an energy source and bicarbonate/CO2 as a carbon source. Sulfur species are disproportionated to sulfide and sulfate. Growth is enhanced with ferryhydrite as a sulfide-scavenging agent. In contrast to typical members of the phylum Desulfobacterota, D. thermophilus is incapable of dissimilatory sulfate reduction.[1]