Marinitoga piezophila
| Marinitoga piezophila | |
|---|---|
| Scientific classification | |
| Kingdom: | Bacteria |
| Phylum: | Thermotogae |
| Class: | Thermotogae |
| Order: | Thermotogales |
| Family: | Thermotogaceae |
| Genus: | Marinitoga |
| Species: | M. piezophila Alain et al. 2002 |
Marinitoga piezophila is a species of rod-shaped, thermo-piezophilic bacteria. It is, anaerobic, chemo-organotrophic, sulfur-reducing, motile, have a mean length of 1-1.5 micrometres and stains Gram-negative. The type strain is KA3T (= DSM 14283T = JCM 11233T).
Origin
A thermophilic, anaerobic, piezophilic, chemo-organotrophic sulfur-reducing bacterium, designated as KA3T, was isolated from a deep-sea hydrothermal chimney sample collected at a depth of 2630 m on the East-Pacific Rise (13degree N).
Optimal Growth Conditions
When grown under elevated hydrostatic pressure, the cells are rod-shaped with a sheath-like outer structure, motile, have a mean length of 1-1.5 mum and stain Gram-negative. They appear singly or in short chains. When grown at lower, or atmospheric, pressures, the cells elongate and become twisted. Growth is enhanced by hydrostatic pressure; the optimal pressure for growth is 40 MPa (26 MPa pressure at sampling site). The temperature range for growth is 45-70 degreeC, the optimum being around 65 degreeC (doubling time is approximately 20 min at 40 MPa). Growth is observed from pH 5 to pH 8, the optimum being at pH 6. The salinity range for growth is 10-50 g NaCl l-1, the optimum being at 30 g l-1[1]
Ecology
The isolate is able to grow on a broad spectrum of carbohydrates or complex proteinaceous substrates, and growth is stimulated by L-cystine and elemental sulfur. The G+C content of the genomic DNA is 29±1 mol%. According to phylogenetic analysis of the 16S rDNA gene, the strain is placed within the order Thermotogales, in the bacterial domain. On the basis of 16S rDNA sequence comparisons and morphological, physiological and genotypic characteristics, it is proposed that the isolate be described as a novel species of the genus Marinitoga, with Marinitoga piezophila sp. nov. as the type species
References
- ↑ Alain, K. (2002). "Marinitoga piezophila sp. nov., a rod-shaped, thermo-piezophilic bacterium isolated under high hydrostatic pressure from a deep-sea hydrothermal vent". International Journal of Systematic and Evolutionary Microbiology 52 (4): 1331–1339. doi:10.1099/ijs.0.02068-0. ISSN 1466-5026.
Further reading
- Alain, Karine; Marteinsson, Thor Viggo; Miroshnichenko, Margarita; Bonch-Osmolovskaya, Elisaveta; Prieur, Daniel; Birrien, Jean-Louis (July 2002). "Marinitoga piezophila sp. nov., a rod-shaped, thermo-piezophilic bacterium isolated under high hydrostatic pressure from a deep-sea hydrothermal vent". International Journal of Systematic and Evolutionary Microbiology 52 (4): 1331–9. doi:10.1099/ijs.0.02068-0.
- Lucas, S.; Han, J.; Lapidus, A.; Cheng, J.-F.; Goodwin, L. A.; Pitluck, S.; Peters, L.; Mikhailova, N.; Teshima, H.; Detter, J. C.; Han, C.; Tapia, R.; Land, M.; Hauser, L.; Kyrpides, N. C.; Ivanova, N.; Pagani, I.; Vannier, P.; Oger, P.; Bartlett, D. H.; Noll, K. M.; Woyke, T.; Jebbar, M. (2012). "Complete Genome Sequence of the Thermophilic, Piezophilic, Heterotrophic Bacterium Marinitoga piezophila KA3". Journal of Bacteriology 194 (21): 5974–5975. doi:10.1128/JB.01430-12. ISSN 0021-9193.
- Advances in Phosphotransferases (Phosphate Group Acceptor) Research and Application: 2013 Edition: ScholarlyPaper. ScholarlyEditions. 21 June 2013. pp. 32–. ISBN 978-1-4816-7150-7.
- Sébert, Philippe, ed. Comparative high pressure biology. CRC Press, 2010.