Dissulfuribacter thermophilus

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Dissulfuribacter thermophilus
Cell morphology of Dissulfuribacter thermophilus strain S69.gif
Cell morphology of Dissulfuribacter thermophilus
Scientific classification
Domain:
Bacteria
Kingdom:
Pseudomonadati
Phylum:
Desulfobacterota
Class:
Dissulfuribacteria
Order:
Dissulfuribacterales
Family:
Dissulfuribacteraceae
Genus:
Dissulfuribacter
Species:
D. 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]

Contents

Discovery

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]

Environment

The temperature range for growth of D.thermophilusis 28–70 °C with an optimum at 61 °C. The pH range for growth is 5.6–7.9, with an optimum at pH 6.8. The NaCl concentration range is from 0.9% to 5.0 % (w/v) with an optimum at 1.8–2.7 %. [1]

Genomics

The GC content of the genomic DNA of the type strain S69T was measured at 40.5 mol% (Tm). [1] Genomic assembly of the type strain S69T was published in July 2016. The genome, sequenced by the 454 Life Sciences technology, was assembled into 27 contigs of a total length of 2.5 Mb with GC content of 43.5% and 29x genome coverage. [7] A fragmented partial genomic assembly from another isolate was published in March 2020, consisting of 420 contigs of a total length of 896 kb. [8]

See also

References

  1. 1 2 3 4 5 6 7 Slobodkin, A. I.; Reysenbach, A.-L.; Slobodkina, G. B.; Kolganova, T. V.; Kostrikina, N. A.; Bonch-Osmolovskaya, E. A. (2013-06-01). "Dissulfuribacter thermophilus gen. nov., sp. nov., a thermophilic, autotrophic, sulfur-disproportionating, deeply branching deltaproteobacterium from a deep-sea hydrothermal vent" . International Journal of Systematic and Evolutionary Microbiology. 63 (Pt_6): 1967–1971. doi:10.1099/ijs.0.046938-0. ISSN   1466-5026. PMID   23024145.
  2. 1 2 Podstawka, Adam. "Dissulfuribacter thermophilus S69 | Type strain | DSM 25762, VKM B-2760 | BacDiveID:23455". bacdive.dsmz.de. Retrieved 2025-03-25.
  3. ↑ Baker, Edward T.; Massoth, Gary J.; Nakamura, Ko-ichi; Embley, Robert W.; de Ronde, Cornel E. J.; Arculus, Richard J. (2005). "Hydrothermal activity on near-arc sections of back-arc ridges: Results from the Mariana Trough and Lau Basin" . Geochemistry, Geophysics, Geosystems. 6 (9). Bibcode:2005GGG.....6.9001B. doi:10.1029/2005GC000948. ISSN   1525-2027.
  4. ↑ Takai, Ken; Nunoura, Takuro; Ishibashi, Jun-ichiro; Lupton, John; Suzuki, Ryohei; Hamasaki, Hiroshi; Ueno, Yuichiro; Kawagucci, Shinsuke; Gamo, Toshitaka; Suzuki, Yohey; Hirayama, Hisako; Horikoshi, Koki (2008). "Variability in the microbial communities and hydrothermal fluid chemistry at the newly discovered Mariner hydrothermal field, southern Lau Basin". Journal of Geophysical Research: Biogeosciences. 113 (G2). Bibcode:2008JGRG..113.2031T. doi:10.1029/2007JG000636. ISSN   0148-0227.
  5. ↑ "Cruising in the South Pacific". University of Bergen. Retrieved 2025-03-25.
  6. ↑ Waite, David W; Chuvochina, Maria; Pelikan, Claus; Parks, Donovan H; Yilmaz, Pelin; Wagner, Michael; Loy, Alexander; Naganuma, Takeshi; Nakai, Ryosuke; Whitman, William B; Hahn, Martin W; Kuever, Jan; Hugenholtz, Philip (2020-11-01). "Proposal to reclassify the proteobacterial classes Deltaproteobacteria and Oligoflexia, and the phylum Thermodesulfobacteria into four phyla reflecting major functional capabilities". International Journal of Systematic and Evolutionary Microbiology. 70 (11): 5972–6016. doi: 10.1099/ijsem.0.004213 . ISSN   1466-5026. PMID   33151140.
  7. ↑ "Dissulfuribacter thermophilus genome assembly ASM168733v1". NCBI. Retrieved 2025-03-26.
  8. ↑ "Dissulfuribacter thermophilus genome assembly ASM1132229v1". NCBI. Retrieved 2025-03-26.
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