1887

Abstract

A novel actinomycete, strain WS-26, was isolated from beach sand on the coast of Jeju Island, Republic of Korea, and subjected to a polyphasic taxonomic characterization. The organism produced reddish orange-coloured substrate mycelium and white aerial mycelium, both of which fragmented into rod-shaped elements. A neighbour-joining tree, based on 16S rRNA gene sequence studies, revealed that the isolate formed a distinct branch at the base of a cluster that included , , , and . This branching pattern was also found in a tree constructed using the maximum-likelihood method, but was not supported by the maximum-parsimony method. Levels of 16S rRNA gene sequence similarity between the isolate and its phylogenetic neighbours ranged from 96.5 to 97.8 %. Chemotaxonomic properties, such as the principal amino acid of peptidoglycan, predominant menaquinone and polar lipids, supported its assignment to the genus . On the basis of phenotypic and phylogenetic data, the organism was different from species with validly published names. The name sp. nov. is proposed, with WS-26 (=KCCM 42317=NRRL B-24459) as the type strain.

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2006-09-01
2019-10-18
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