Psychroflexus torquis Bowman et al. 1999
General information
Name
Psychroflexus torquis
Valid publication
1999
Effective publication
1998
Nomenclature type
651;ACAM 623;ATCC 700755
;CIP 106069;LMG 21429
Etymology
L. n. <i>torquis</i>, a twisted neck-chain, referring to coiling of cellular filaments.
Ecology
Source
isolated from sea ice collected from Prydz Bay, Vestfold Hills, Antarctica.
Morphology
Cells are non-spore-forming, straight or slightly curved rods (0.4-1.5 × 0.5-3 µm). Nonmotile or motile by gliding. On solid media cells range from filaments of indeterminate length in very young cultures, which slowly glide, to coccoid bodies in older cultures. Cells occur singly or in pairs. Spores and resting cells are not present. Cells forms orange, circular, mucoid, viscid to elastic, convex or dome-like, opaque, entire, smooth, glistening colonies up to 10 mm in diameter.
Morphology standardized
cell shape | length | width |
---|---|---|
rod; coccus; filament | 0.5-3 | 0.4-1.5 |
motility |
---|
v |
Physiology
Nutrition type
chemoheterotroph
Oxygen requirement
obligately aerobic
Gram
staining |
---|
negative |
Halophily
optimum |
---|
5-10% |
C/N source
positive results | ||||||
---|---|---|---|---|---|---|
yeast extract | starch | gelatin | tween 80 | maltose | D-glucose | D-mannose |
Biochemistry
Fattyacids
Name | Account |
---|---|
anteiso-C17:0 3-OH | 10.9 |
iso-C16:0 | 6.0 |
anteiso-C15:1 ω10c | 16.9 |
anteiso-C15:0 | 35.2 |
iso-C16:0 3-OH | 15.4 |
Quinones
MK-6
Enzymology
Enzyme | Activity |
---|---|
alkaline phosphatase | + |
amylase | + |
catalase | + |
oxidase | + |
α-glucosidase | + |
β-glucosidase | + |
Taxonomy marker
Genomics
Submitter date: 2012/10/09 00:00 Update date: 2018/04/04 00:00
Source
The Gordon and Betty Moore Foundation Marine Microbiology Initiative
Coverage
0
Assembly status
Complete Genome
Assembly class
haploid
Strain List
References
1
Bowman, J.P., McCammon, S.A., Lewis, T., Skerratt, J.H., Brown, J.L., Nichols, D.S., and McMeekin, T.A. Psychroflexus torquis gen. nov., sp. nov., a psychrophilic species from Antarctic sea ice, and reclassification of Flavobacterium gondwanense (Dobsonet al. 1993) as Psychroflexus gondwanense gen. nov., comb. nov. Microbiology (1998) 144:1601-1609.[DOI:10.1099/00221287-144-6-1601]
[PMID:9639931]
2
Validation List No. 68. Int. J. Syst. Bacteriol. (1999) 49:1-3.[DOI:10.1099/00207713-49-1-1]
3
Hahnke, R.L., Meier-Kolthoff, J.P., GarcIa-Lopez, M., Mukherjee, S., Huntemann, M., Ivanova, N.N., Woyke, T., Kyrpides, N.C., Klenk, H.-P., and Goker, M. Genome-based taxonomic classification of Bacteroidetes. Front. Microbiol. (2016) 7:2003.[DOI:10.3389/fmicb.2016.02003]
[PMID:28066339]
[PMCID:PMC5167729]
4
List of Changes in Taxonomic Opinion No. 26. Int. J. Syst. Evol. Microbiol. (2017) 67:2081-2086.[DOI:10.1099/ijsem.0.002071]