Colwellia piezophila sp. nov., a novel piezophilic species from deep-sea sediments of the Japan Trench
Nogi, Yuichi and Hosoya, Shoichi and Kato, Chiaki and Horikoshi, Koki,, 54, 1627-1631 (2004),
doi = https://doi.org/10.1099/ijs.0.03049-0,
publicationName = Microbiology Society,
issn = 1466-5026,
abstract= Two strains of obligately piezophilic bacteria were isolated from sediment collected from the bottom surface of a small canyon on the seaward slope of the Japan Trench at a depth of 6278 m. The isolated strains, Y223GT and Y251E, are closely affiliated with members of the genus Colwellia on the basis of 16S rRNA gene sequence analysis. The G+C contents of both strains were about 39 mol%. DNA–DNA hybridization values between these strains and Colwellia reference strains were significantly lower than those accepted as the phylogenetic definition of a species. The novel strains are Gram-negative, polarly flagellated and facultatively anaerobic. The optimal pressure for growth was 60 MPa at both 4 and 10 °C; the most rapid growth rate was observed at 10 °C and 60 MPa. No growth occurred at 15 °C under any pressure studied. The major isoprenoid quinone is Q-8. The predominant cellular fatty acids are C16 : 0 and C16 : 1. Based on the taxonomic differences observed, the isolated strains appear to represent a novel obligately piezophilic Colwellia species. The name Colwellia piezophila sp. nov. (type strain Y223GT=JCM 11831T=ATCC BAA-637T) is proposed.,
language=,
type=