sp. nov., isolated from marine sediment Free

Abstract

A novel actinobacterium, designated strain SST-39, was isolated from a marine sediment sample collected in Jeju, Republic of Korea. Cells were facultatively anaerobic, Gram-positive, non-endospore-forming, non-motile rods. Colonies were circular, slightly convex, opaque and brilliant yellow. The cell-wall peptidoglycan of the organism contained -diaminopimelic acid as the diagnostic diamino acid. Polar lipids included phosphatidylglycerol and diphosphatidylglycerol. The predominant menaquinone was MK-9(H). The major cellular fatty acids were anteiso-C, C and C. The DNA G+C content was 68.4 mol%. A phylogenetic tree based on 16S rRNA gene sequences indicated that the isolate belonged to the family and formed a unique cluster with the type strain of (97.0 % sequence similarity). Other phylogenetic neighbours were the type strains of (95.1 % 16S rRNA gene sequence similarity) and (95.1 %). On the basis of its phenotypic and phylogenetic distinctiveness, strain SST-39 is considered to represent a novel species of the genus , for which the name sp. nov. is proposed. The type strain is SST-39 (=DSM 18582 =KCTC 19196).

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2008-04-01
2024-03-28
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Morphological features of strain SST-39 observed by transmission electron microscopy. The culture was grown on TSA at 30 °C for 3 days. Bar, 0.5 µm.

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Neighbour-joining tree based on 16S rRNA gene sequences showing the relationships between strain SST-39 and representatives of the suborder and related taxa. [PDF](19 KB)

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