1887

Abstract

A novel marine bacterial strain, PV-4, isolated from a microbial mat located at a hydrothermal vent of Loihi Seamount in the Pacific Ocean, has been characterized. This micro-organism is orangey in colour, Gram-negative, polarly flagellated, facultatively anaerobic and psychrotolerant (temperature range, 0–42 °C). No growth was observed with nitrate, nitrite, DMSO or thiosulfate as the electron acceptor and lactate as the electron donor. The major fatty acid detected in strain PV-4 was iso-C. Strain PV-4 had ubiquinones consisting mainly of Q-7 and Q-8, and possessed menaquinone MK-7. The DNA G+C content of the strain was 53.8 mol% and the genome size was about 4.5 Mbp. Phylogenetic analyses based on 16S rRNA gene sequences placed PV-4 within the genus . PV-4 exhibited 16S rRNA gene sequence similarity levels of 99.6 and 97.5 %, respectively, with respect to the type strains of and . DNA from strain PV-4 showed low mean levels of relatedness to the DNAs of (50.5 %) and (8.5 %). On the basis of phylogenetic and phenotypic characteristics, the bacterium was classified in the genus within a distinct novel species, for which the name sp. nov. is proposed. The type strain is PV-4 (=ATCC BAA-1088=DSM 17748).

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2006-08-01
2019-12-05
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vol. , part 8, pp. 1911 - 1916

Fatty acid compositions of strain PV-4 and JCM 12193 . [PDF](23 KB)



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