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Maribacter arcticus sp. nov., isolated from Arctic marine sediment

¹ Polar BioCenter, Korea Polar Research Institute, KORDI, Songdo Techno Park, Songdo-dong 7-50, Yeonsu-gu, Incheon 406-840, Republic of Korea
² School of Biological Sciences and Institute of Microbiology, Seoul National University, 56-1 Shillim-dong, Kwanak-gu, Seoul 151-742, Republic of Korea

Correspondence
Hong Kum Lee
hklee{at}kopri.re.kr

A Gram-negative, non-motile, aerobic bacterium, designated strain KOPRI 20941^T, was isolated from a sample of marine sediment from Ny Ålesund, Spitsbergen, Norway. A phylogenetic analysis based on 16S rRNA gene sequences revealed that the Arctic isolate nested within the genus Maribacter and showed the highest sequence similarity (98.1 %) with respect to Maribacter orientalis KMM 3947^T. Chemotaxonomic data (DNA G+C content of 36 mol%; MK-6 as the major respiratory quinone and iso-C_{17 : 0} 3-OH, C_{16 : 1}7c/iso-C_{15 : 0} 2-OH and iso-C_{15 : 0} as the major fatty acids) supported the affiliation of strain KOPRI 20941^T to the genus Maribacter. The results of phylogenetic analyses, physiological and biochemical tests and a DNA–DNA reassociation test (<54 % relatedness) allowed genotypic and phenotypic differentiation of the strain from the recognized species of the genus Maribacter. Therefore strain KOPRI 20941^T represents a novel species of the genus Maribacter, for which the name Maribacter arcticus sp. nov. is proposed. The type strain is KOPRI 20941^T (=KCTC 22053^T=JCM 14790^T).

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