Halorhabdus
| Halorhabdus | |
|---|---|
| Scientific classification | |
| Domain: | |
| Kingdom: | |
| Phylum: | |
| Class: | Halobacteria
|
| Order: | |
| Family: | |
| Genus: | Halorhabdus Wainø et al. 2000 emend. Antunes et al. 2008[citation needed]
|
| Species | |
| |
In taxonomy, Halorhabdus is a genus of the Halobacteriaceae.
Description and significance[]
Halorhabdus utahensis (salt-loving rod) is a motile, Gram-negative, extremely halophilic archaeon that forms red, circular colonies. It grows at the temperatures between 17 and 55 °C, with optimal growth occurring at 50 °C. It can also grow over a pH range of 5.5–8.5 with the optimal pH value between 6.7 and 7.1. Further, with its extremely high salinity optimum of 27% NaCl, Halorhabdus has one of the highest reported salinity optima of any living organism.
Genome structure[]
The genome of Halorhabdus was sequenced in August 2014.[1] The G + C content of its DNA is estimated to be 64%.
Cell structure and metabolism[]
The cells of H. utahensis are extremely pleomorphic, exhibiting any shape from irregular coccoid or ellipsoid to triangular, club-shaped or rod-shaped forms. The rod-shaped and ellipsoid cells are 2-10 by 0.5-1 µm and 1-2 by 1 µm in size, respectively, and the spherical cells have a diameter of approximately 1 µm. The archaeon uses only a limited range of substrates, such as glucose, xylose, and fructose, for growth, and is unique in its inability to utilize yeast extract or peptone. Other substances that did not stimulate the organism's growth include organic acids, amino acids, alcohols, glycogen, and starch.
Ecology[]
Strains of H. utahensis were isolated from samples from Great Salt Lake, Utah, USA.[2]
References[]
- ^ Werner, J (Aug 2014). "Halorhabdus tiamatea: proteogenomics and glycosidase activity measurements identify the first cultivated euryarchaeon from a deep-sea anoxic brine lake as potential polysaccharide degrader". Environmental Microbiology. 16 (8): 2525–37. doi:10.1111/1462-2920.12393. PMC 4257568. PMID 24428220.
- ^ See the NCBI webpage on Halorhabdus. Data extracted from the "NCBI taxonomy resources". National Center for Biotechnology Information. Retrieved 2007-03-19.
Further reading[]
Scientific journals[]
- Waino M, Tindall BJ, Ingvorsen K (2000). "Halorhabdus utahensis gen. nov., sp. nov., an aerobic, extremely halophilic member of the Archaea from Great Salt Lake, Utah". Int. J. Syst. Evol. Microbiol. 50: 183–190. doi:10.1099/00207713-50-1-183. PMID 10826803.
- Euzeby JP, Boemare NE (2000). "The modern Latin word rhabdus belongs to the feminine gender, inducing necessary corrections according to Rules 65(2),12c(1) and 13b of the Bacteriological Code (1990 Revision)". Int. J. Syst. Evol. Microbiol. 50 (4): 1691–1692. doi:10.1099/00207713-50-4-1691. PMID 10939678.
- 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. doi:10.1099/00207713-50-3-1405. PMID 10843089.
Scientific books[]
- Gibbons, NE (1974). "Family V. Halobacteriaceae fam. nov.". In RE Buchanan; NE Gibbons (eds.). Bergey's Manual of Determinative Bacteriology (8th ed.). Baltimore: The Williams & Wilkins Co.
Scientific databases[]
- PubMed references for Halorhabdus
- PubMed Central references for Halorhabdus
- Google Scholar references for Halorhabdus
External links[]
- NCBI taxonomy page for Halorhabdus
- Search Tree of Life taxonomy pages for Halorhabdus
- Search Species2000 page for Halorhabdus
- MicrobeWiki page for Halorhabdus
- LPSN page for Halorhabdus
 | This archaea-related article is a stub. You can help Wikipedia by . |
- Archaea genera
- Archaea stubs