1887

Abstract

Two aerobic, psychrohalotolerant, motile bacterial isolates, CK13 and CK16, isolated from sea-water samples collected off the subantarctic Kerguelen island, were characterized by using a polyphasic taxonomic approach. On the basis of 16S rRNA gene sequence data, the strains were 99·6 % similar and exhibited 93–97 % similarity with the seven recognized species of . The most closely related species were and , with 97 and 96 % similarity at the 16S rRNA gene sequence level, respectively. DNA–DNA hybridization values between strain CK13 and and were only 58 and 40 %, respectively. The major fatty acids present in strain CK13 were iso-C, C, C 7 and C 7. The DNA G+C content of strain CK13 was 41·2 mol%. Phosphatidylethanolamine and phosphatidylglycerol were identified as the predominant phospholipids. All the above characteristics support the affiliation of strain CK13 to the genus . Phylogenetic analysis and phenotypic and genotypic distinctiveness confirmed that strains CK13 and CK16 are members of a novel species of the genus , for which the name sp. nov. is proposed. The type strain is CK13 (=MTCC 6645=DSM 16579=JCM 12522).

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2006-02-01
2020-09-27
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