Haloarcula
| Haloarcula | |
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SEM image of Haloarcula quadrata .
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| Scientific classification | |
| Domain: | |
| Kingdom: | |
| Phylum: | |
| Class: | Halobacteria |
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| Genus: | Haloarcula Torreblanca et al. 1986
emend. Oren et al. 2009[1] |
| Type species | |
Haloarcula vallismortis (Gonzalez, Gutierrez & Ramirez 1979) Torreblanca et al. 1986
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Species
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Haloarcula (common abbreviation Har.) is a genus of extreme halophilic
Cell Structure
Haloarcula species can be distinguished from other genera in the family Halobacteriaceae by the presence of specific derivatives of TGD-2 polar lipids. H. quadrata has predominantly flat, square-shaped, somewhat pleomorphic cells.[3]
Metabolism
H. quadrata was first isolated when researchers were attempting to culture Haloquadratum walsbyi, a haloarchaeon that was thought to be unculturable until 2004. Similar to other halophilic archaea, Haloarcula species grow optimally at 40–45 °C. Growth appears in sheets of up to 65 cells often in the shape of a square or triangle.
Taxonomy
The genus of Haloarcula was long grouped with other halophilic archaea such as Halobacterium until genomic analysis prompted to reorder this genus in the new family of Haloarculaceae.
Phylogeny
The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN)[4] and National Center for Biotechnology Information (NCBI).[1]
| 16S rRNA based | 53 marker proteins based GTDB 08-RS214[8][9][10] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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Ecology
Haloarcula species are found in neutral saline environments such as salt lakes, marine salterns, and saline soils. Like other members of the family Halobacteriaceae, Haloarcula requires at least 1.5 M NaCl for growth, but grow optimally in 2.0 to 4.5 M NaCl.[1]
See also
References
- ^ a b c Sayers; et al. "Haloarcula". National Center for Biotechnology Information (NCBI) taxonomy database. Retrieved 2023-10-10.
- ISBN 978-3-642-38954-2, retrieved 2021-11-17
- PMID 10425773.
- ^ J.P. Euzéby. "Haloarcula". List of Prokaryotic names with Standing in Nomenclature (LPSN). Retrieved 2023-10-10.
- ^ "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
- Torreblanca M, Rodriquez-Valera F, Juez G, Ventosa A, Kamekura M, Kates M (1986). "Classification of non-alkaliphilic halobacteria based on numerical taxonomy and polar lipid composition, and description of Haloarcula gen. nov. and Haloferax gen.nov". Syst. Appl. Microbiol. 8 (1–2): 89–99. .
- Oren A, Ventosa A (2000). "International Committee on Systematic Bacteriology Subcommittee on the taxonomy of Halobacteriaceae. Minutes of the meetings, 16 August 1999, Sydney, Australia". Int. J. Syst. Evol. Microbiol. 50 (3): 1405–1407. PMID 10843089.
- Javor B, Requadt C, Stoeckenius W (1982). "Box-shaped halophilic bacteria". J. Bacteriol. 151 (3): 1532–1542. PMID 6286602.
External links
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