1887

Abstract

A marine actinomycete strain, designated KSW2-15, was isolated from a dried seaweed sample collected from a sandy beach on the coast of Jeju in the Republic of Korea. The organism produced non-motile, non-endospore-forming, Gram-positive, coccoid cells. The colonies were circular, translucent and yellow in colour with entire margins. -Diaminopimelic acid was present as the diamino acid of the peptidoglycan. The acyl type of the muramic acid was acetyl. Mycolic acids were not present. The predominant menaquinone was MK-8(H). The polar lipids were phosphatidylethanolamine, phosphatidylinositol and diphosphatidylglycerol. The major cellular fatty acids were of the saturated, unsaturated and iso-branched methyl types. The DNA G+C content was 74 mol%. Phylogenetic analyses based on 16S rRNA gene sequences revealed that strain KSW2-15 formed a loose association with ‘ Nostocoida limicola’, within the radiation of the family of the suborder . The organism showed the highest levels of sequence similarity with ‘ Nostocoida limicola’ (96.1 %), (96.1 %) and (96.0 %). The levels of 16S rRNA gene sequence similarity between the isolate and members of other genera of the family were in the range 92.1–95.5 %. On the basis of the polyphasic evidence, the isolate should be classified within a novel genus and species, for which the name gen. nov., sp. nov. is proposed. The type strain of is strain KSW2-15 (=KCCM 42315=NRRL B-24460).

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2006-10-01
2021-04-19
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