Sulfurisphaera is a genus of the Sulfolobaceae.
| Sulfurisphaera | |
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Scientific classification 
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| Domain: | Archaea |
| Kingdom: | Proteoarchaeota |
| Superphylum: | TACK group |
| 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 | |
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Description and significance edit
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.
The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN) [1] and National Center for Biotechnology Information (NCBI)[2]
| 16S rRNA based LTP_06_2022[3][4][5] | 53 marker proteins based GTDB 08-RS214[6][7][8] | ||||||||||||||||||||||||||||||
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Genome structure edit
The genome of Sulfurisphaera is yet to be sequenced. The G + C content is estimated to be 30–33%.
Cell structure and metabolism edit
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 edit
The strains of Sulfurisphaera ohwakuensis were isolated from multiple locations in the acidic hot springs in Ohwaku Valley, Hakone, Japan.[2]
See also edit
References edit
- ^ J.P. Euzéby. "Sulfurisphaera". List of Prokaryotic names with Standing in Nomenclature (LPSN). Retrieved 10 May 2023.
- ^ a b Sayers; et al. "Sulfurisphaera". National Center for Biotechnology Information (NCBI) taxonomy database. Retrieved 10 May 2023.
- ^ "The LTP". Retrieved 10 May 2023.
- ^ "LTP_all tree in newick format". Retrieved 10 May 2023.
- ^ "LTP_06_2022 Release Notes" (PDF). Retrieved 10 May 2023.
- ^ "GTDB release 08-RS214". Genome Taxonomy Database. Retrieved 10 May 2023.
- ^ "ar53_r214.sp_label". Genome Taxonomy Database. Retrieved 10 May 2023.
- ^ "Taxon History". Genome Taxonomy Database. Retrieved 10 May 2023.
Further reading edit
Scientific journals edit
- 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 edit
- 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 edit
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