1887

Abstract

A Gram-stain-positive actinobacterial strain, designated F23, was isolated from marine sediment collected from the western Pacific. Strain F23 showed less than 94.5 % 16S rRNA gene sequence similarity with type strains of species with validly published names. Phylogenetic analysis, based on 16S rRNA gene sequences, revealed that the novel isolate formed a distinct monophyletic clade within the family and clustered distantly with the genera and . Cells of strain F23 were non-motile, rod-shaped and aerobic to microaerophilic. Optimal growth occurred at 35–37 °C, at pH 8.0–9.0 and in the presence of 1 % NaCl (w/v). The isolate contained -diaminopimelic acid as the characteristic cell-wall diamino acid, MK-8(H) and MK-7(H) as the predominant menaquinones and anteiso-C and anteiso-C as the major fatty acids. The DNA G+C content of strain F23 was 69.0 mol%. On the basis of phylogenetic analysis, phenotypic and chemotaxonomic characteristics and 16S rRNA gene signature nucleotide patterns, strain F23 represents a novel species in a novel genus in the family , for which the name gen. nov., sp. nov. is proposed. The type strain is F23 ( = JCM 19771 = CGMCC 1.12785 = MCCC 1A09945).

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2016-03-01
2020-04-02
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