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Psychroflexus torquis gen. nov., sp. nov. a psychrophilic species from Antarctic sea ice, and reclassification of Flavobacterium gondwanense (Dobson et al. 1993) as Psychroflexus gondwanense gen. nov., comb. nov.
Open accessAbstract
A group of sea-ice-derived psychrophilic bacterial strains possessing the unusual ability to synthesize the polyunsaturated fatty acids eicosapentaenoic acid (20:5.3) and arachidonic acid (20:4.6) belong to the Family Flavobacteriaceae (Flexibacter-Bacteroides-Flavobacterium phylum), according to 16S rRNA sequence analysis. Surprisingly, the isolates were also found to cluster closely to the moderately halophilic and psychrotrophic species [Flavobacterium] gondwanense (sequence similarity 97-8-98-1 %). The whole-cell fatty acid profiles of this group and [Flavobacterium] gondwanense were very similar and distinct from other related flavobacteria. The sea ice strains and [Flavobacterium] gondwanense differed substantially in terms of ecophysiology, possibly representing divergent adaptations to sympagic and planktonic marine habitats, respectively. Evidence based on phylogeny and fatty acid profiles supports the conclusion that the taxa are close relatives distinct from other bacterial groups. It is thus proposed that the sea ice strains represent a novel taxon designated Psychroflexus torquis gen. nov., sp., nov. (type strain ACAM 623 T) while [Flavobacterium] gondwanense becomes Psychroflexus gondwanense gen. nov., comb. nov.
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Cited by
Bruns, A., Rohde, M., & Berthe-Corti, L. (2001) · International Journal of Systematic and Evolutionary Microbiology · doi:10.1099/00207713-51-6-1997 · Cited by 555
Bergé, J.-P., & Barnathan, G. (2005) · Advances in Biochemical Engineering/Biotechnology · doi:10.1007/b135782 · Cited by 401
Polyunsaturated fatty acids in marine bacteria — a dogma rewritten
Russell, N. J., & Nichols, D. S. (1999) · Microbiology · doi:10.1099/13500872-145-4-767 · Cited by 286
Self-citationDiversity of Bacteroidetes in high‐altitude saline evaporitic basins in northern Chile
Dorador, C., Meneses, D., Urtuvia, V., Demergasso, C., Vila, I., Witzel, K., & Imhoff, J. F. (2009) · Journal of Geophysical Research: Biogeosciences · doi:10.1029/2008jg000837 · Cited by 142
Hosoya, S., Arunpairojana, V., Suwannachart, C., Kanjana-Opas, A., & Yokota, A. (2006) · INTERNATIONAL JOURNAL OF SYSTEMATIC AND EVOLUTIONARY MICROBIOLOGY · doi:10.1099/ijs.0.64504-0 · Cited by 74
Metadata
- Authors
- Bowman, J. P., McCammon, S. A., Lewis, T., Skerratt, J. H., Brown, J. L., Nichols, D. S., & McMeekin, T. A.
- Venue
- Microbiology
- Publisher
- Microbiology Society
- Published
- 1998-06-01
- Volume
- 144
- Issue
- 6
- Pages
- 1601-1609
- ISSN
- 1350-0872 (ISSN-L)
- 1465-2080
- OpenAlex
- W2161645520
- Cited by
- 196
- References
- 0
- FWCI
- 7.54
- Type
- journal article
- Language
- en
- Open access
- green
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- CoChat. (2026). Citation check: Psychroflexus torquis gen. nov., sp. nov. a psychrophilic species from Antarctic sea ice, and reclassification of Flavobacterium gondwanense (Dobson et al. 1993) as Psychroflexus gondwanense gen. nov., comb. nov. https://app.cochat.ai/papers/10.1099/00221287-144-6-1601
- The paper
- Bowman, J. P., McCammon, S. A., Lewis, T., Skerratt, J. H., Brown, J. L., Nichols, D. S., & McMeekin, T. A. (1998). Psychroflexus torquis gen. nov., sp. nov. a psychrophilic species from Antarctic sea ice, and reclassification of Flavobacterium gondwanense (Dobson et al. 1993) as Psychroflexus gondwanense gen. nov., comb. nov. Microbiology. https://doi.org/10.1099/00221287-144-6-1601
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