Polaromonas vacuolata is a psychrophilic bacterium with gas vesicles from the genus Polaromonas, which was isolated from Antarctica.[3] The optimum temperature for growth is 4°C, and the growth temperature range is 0 to 12°C. Colonies are snowy white, circular, and convex with smooth surfaces and entire edges. The more gas vesicles within the cells, the whiter the colony. Good growth occurs in media containing NaCl at concentrations ranging from 0 to 6.0%, but no growth occurs in the presence of 7.0% NaC1.[4]
| Polaromonas vacuolata | |
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| Scientific classification | |
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| Species: | P. vacuolata
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| Binomial name | |
| Polaromonas vacuolata Irgens et al. 1996[1]
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| Type strain | |
| 34-P, ATCC 51984, CCUG 51245, CCUG 52837[2] | |
Tests for catalase, oxidase, urease, deaminase, and lipase are positive. Amylase, protease (gelatin), tryptophanase (indole), nitrate reductase, cysteine desulfurase, and agarase tests are negative.[4]
The following carbon sources are utilized: acetate, lactate, malate, fumarate, pyruvate, propionate, citrate, succinate, oxaloacetate, butyrate, 2-oxoglutarate7 glucose, glycerol, sorbitol, DL-alanine, DL-glutamate, DL-proline, DL-aspartate, and DL-asparagine. [4]
The following carbon sources are not utilized: maltose, D- fructose, sucrose, lactose, D-xylose, D-ribose, formate, cellobiose, D-mannose, L-fucose, melibiose, melezitose, L-rhamnose, sorbose, trehalose, methanol, ethanol, erythritol, propanol, benzoate, malonate, DL-arginine, glycine, DL-serine, DL-isoleucine, DL-lysine, DL-histidine, DL-ornithine, DL-methionhe, DL- valine, DL-threonine, and DL-tryptophan.[4]
The fatty acid composition is 75% 16:l o7c, 17% 16:0, and 8% 18:l 07c, 18:l o9t, or 18:l o12t. Susceptible to novobiocin, tetracycline, neomycin, and kanamycin. Resistant to bacitracin, streptomycin, and gentamicin.[4]
The G+C content is 52.0 mol% (as determined by the thermal denaturation method). [4]
References
edit- ^ A.C. Parte. "Polaromonas". LPSN. Retrieved 2016-08-18.
- ^ "ATCC 51984 Strain Passport - StrainInfo". straininfo.net. Retrieved 2016-08-18.
- ^ "Polaromonas vacuolata gen. nov., sp. nov., a psychrophilic, marine, gas vacuolate bacterium from Antarctica". educus.com. Archived from the original on 2013-06-29. Retrieved 2016-08-18.
- ^ a b c d e f Irgens, R. L. (July 1996). "Polaromonas vacuolata gen. nov., sp. nov., a Psychrophilic, Marine, Gas Vacuolate Bacterium from Antarctica". International Journal of Systematic Bacteriology. 46 (3): 822–826. doi:10.1099/00207713-46-3-822. PMID 8782696 – via ResearchGate.
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