
Full text loading...
A psychrophilic, Gram-negative, dark orange-pigmented bacterium, designated CL-AP4T, was isolated from a culture of the green alga Pyramimonas gelidicola obtained from the Southern Ocean. Strain CL-AP4T grew optimally at 10 °C, in the presence of 3–4 % sea salts and at pH 8. 16S rRNA gene sequence analysis revealed that strain CL-AP4T belonged to the family Flavobacteriaceae, with Maribacter arcticus KOPRI 20941T as its closest relative (97.2 % similarity). A number of chemotaxonomic characteristics supported affiliation of strain CL-AP4T with the genus Maribacter, i.e. iso-C15 : 0 (17.2 %), iso-C15 : 1 (16.8 %) and iso-C17 : 0 3-OH (14.9 %) were the dominant fatty acids, MK-6 was the major menaquinone and the DNA G+C content was 37.1 mol%. DNA–DNA relatedness between CL-AP4T and M. arcticus KOPRI 20941T was only 10 %, suggesting that they are genomically distinct species. In addition, strain CL-AP4T differed phenotypically from M. arcticus in its optimum growth temperature, its ability to hydrolyse starch, Tween 40 and Tween 80, and production of certain enzymes. On the basis of the results of the polyphasic analysis, strain CL-AP4T was classified in the genus Maribacter as belonging to a novel species, for which the name Maribacter antarcticus sp. nov. is proposed; the type strain is CL-AP4T (=KCCM 90069T=JCM 15445T).
Article metrics loading...
Full text loading...
References
Data & Media loading...
Supplements
International Journal of Systematic and Evolutionary Microbiology vol. 59 , part 6, pp. 1455 – 1459
Supplementary Table S1. Comparison of the cellular fatty acid contents of strain CL-AP4 Tand phylogenetically related species in the genus Maribacter [ PDF] (147 KB)