Sulfurisphaera
| Sulfurisphaera | |
|---|---|
Scientific classification 
| |
| Domain: | Archaea |
| Phylum: | Thermoproteota |
| Class: | Thermoprotei |
| Order: | Sulfolobales |
| Family: | Sulfolobaceae |
| Genus: | Sulfurisphaera Kurosawa et al. 1998 |
| Type species | |
| Sulfurisphaera ohwakuensis Kurosawa et al. 1998
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| Species | |
| |
Sulfurisphaera is a genus of the Sulfolobaceae.
Description and significance[]
Sulfurisphaera is a facultatively anaerobic, thermophilic, Gram-negative archaeon that occurs in acidic solfataric fields. The organism grows under the temperature range of 63–92 °C with the optimum temperature at 84 °C, and under the pH range of 1.0–5.0, with an optimum of pH 2.0. It forms colonies that are smooth, roundly convex, and slightly yellow.
Genome structure[]
The genome of Sulfurisphaera is yet to be sequenced. The G + C content is estimated to be 30–33%.
Cell structure and metabolism[]
The spherical cells of Sulfurisphaera ohwakuensis are 1.2–1.5 µm in diameter. Thin sections of the organism reveal an envelope (approx. 24 nm) surrounding the cell membrane. It grows organotrophically on proteinaceous, complex substrates such as yeast extract, peptone, and tryptone. Growth was not observed on single sugars or amino acids such as D-glucose, D-galactose, D-fructose, D-xylose, lactose, maltose, sucrose, alanine, glutamate, glycine, and histidine.
Ecology[]
The strains of Sulfurisphaera ohwakuensis were isolated from multiple locations in the acidic hot springs in Ohwaku Valley, Hakone, Japan.[1]
References[]
- ^ See the NCBI webpage on Sulfurisphaera. Data extracted from the "NCBI taxonomy resources". National Center for Biotechnology Information. Retrieved 2007-03-19.
Further reading[]
Scientific journals[]
- Kurosawa N; Itoh YH; Iwai T; Sugai A; Uda I; et al. (1998). "Sulfurisphaera ohwakuensis gen. nov., sp. nov., a novel extremely thermophilic acidophile of the order Sulfolobales". Int. J. Syst. Bacteriol. 48 (2): 451–456. doi:10.1099/00207713-48-2-451. PMID 9731283.
- Mikkelsen, Deirdre; Kappler, Ulrike; McEwan, Alastair G.; Sly, Lindsay I. (24 February 2009). "Probing the archaeal diversity of a mixed thermophilic bioleaching culture by TGGE and FISH" (PDF). Systematic and Applied Microbiology. 32 (7): 501–513. doi:10.1016/j.syapm.2009.06.001. PMID 19541445.
Scientific books[]
- Stetter, KO (1989). "Order III. Sulfolobales ord. nov. Family Sulfolobaceae fam. nov.". In JT Staley; MP Bryant; N Pfennig; JG Holt (eds.). Bergey's Manual of Systematic Bacteriology, Volume 3 (1st ed.). Baltimore: The Williams & Wilkins Co. p. 169. ISBN 0-683-07908-5.
External links[]
- NCBI taxonomy page for Sulfurisphaera
- Search Tree of Life taxonomy pages for Sulfurisphaera
- Search Species2000 page for Sulfurisphaera
- MicrobeWiki page for Sulfurisphaera
- LPSN page for Sulfurisphaera
- Sulfurisphaera at BacDive - the Bacterial Diversity Metadatabase
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