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Gulosibacter sediminis sp. nov., isolated from Indian Ocean marine sediment.

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A novel Gram-stain-positive, catalase-positive, oxidase-negative, aerobic, non-motile, rod-shaped bacterium, designated strain YIM M12148T, was isolated from a marine sediment sample collected from the Indian Ocean. The strain grew optimally at… Click to show full abstract

A novel Gram-stain-positive, catalase-positive, oxidase-negative, aerobic, non-motile, rod-shaped bacterium, designated strain YIM M12148T, was isolated from a marine sediment sample collected from the Indian Ocean. The strain grew optimally at 28 °C, pH 8.0 and in the presence of 1-3 % (w/v) NaCl. Phylogenetic analysis based on 16S rRNA gene sequences showed that strain YIM M12148T belongs to the genus Gulosibacter, with the highest sequence similarity to Gulosibacter faecalis NBRC 15706T (96.12 %). The cell-wall sugars of strain YIM M12148T were rhamnose, ribose, glucose and mannose. The predominant isoprenoid quinones were MK-8 and MK-9. The polar lipids consisted of major amounts of diphosphatidylglycerol, phosphatidylglycerol, phosphatidylethanolamine, one unknown phospholipid and one unknown lipid. Major fatty acids (>5 % of the total) of the novel isolate were anteiso-C15 : 0, iso-C15 : 0, iso-C13 : 0 and anteiso-C13 : 0. The genomic DNA G+C content of strain YIM M12148T was 67.15 mol%. On the basis of genotypic and phenotypic data, it is apparent that strain YIM M12148T represents a novel species of the genus Gulosibacter, for which the name Gulosibacter sediminis sp. nov. is proposed. The type strain is YIM M12148T (=KCTC 29660T=DSM 29154T).

Keywords: gulosibacter; yim m12148t; marine sediment; strain yim

Journal Title: International journal of systematic and evolutionary microbiology
Year Published: 2021

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