1887

Abstract

The taxonomic position of a novel actinobacterium (designated SBS-12), which was isolated from beach sand on Jeju Island, Republic of Korea, was determined following a polyphasic taxonomic characterization. Cells of the organism were Gram-positive, catalase-positive, oxidase-negative and non-motile rods. The organism contained -diaminopimelic acid in the cell-wall peptidoglycan and MK-8(H) as predominant menaquinone, and had a polar lipid profile containing phosphatidylglycerol and phosphatidylinositol, iso-C as the major fatty acid and a DNA G+C content of 73.1 mol%. A neighbour-joining tree based on 16S rRNA gene sequences showed that the organism occupies a distinct phylogenetic position within the radiation including representatives of the family . High levels of 16S rRNA gene sequence similarity were found with (97.2 %), (96.9 %), (96.6 %) and (96.3 %). The combination of morphological and chemotaxonomic characteristics was consistent with classification in the genus , but the isolate can be differentiated from all species with validly published names by a range of physiological properties. The name sp. nov. is proposed for this novel organism, with the type strain SBS-12 (=JBRI 2003=KCCM 42681=DSM 18965).

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2007-12-01
2020-09-28
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