Virgibacillus halotolerans sp. nov., isolated from a dairy product.

A Gram-stain-positive, strictly aerobic, rod-shaped and weakly motile bacterium, designated WS 4627(T), was isolated from a dairy product sample collected in southern Germany. Spherical to slightly ellipsoidal endospores were formed centrally or subterminally in sometimes slightly swollen sporangia. The isolate was able to grow at 8-35 °C, at pH 6.5-8.5 and with 0.5-16.5% (w/v) NaCl. The diamino acid of the cell wall was meso-diaminopimelic acid (peptidoglycan type A1γ) and the genomic DNA G+C content was 39.1 mol%. The major menaquinone was MK-7, the cellular fatty acid profile contained major amounts of anteiso-C(15:0) and anteiso-C(17:0) and the major polar lipids were diphosphatidylglycerol and phosphatidylglycerol. Strain WS 4627(T) was most closely related to 'Virgibacillus natachei' FarD (96.5% 16S rRNA gene sequence similarity) and 'Virgibacillus zhanjiangensis' JSM 079157 (96.0%). Based on the data presented, strain WS 4627(T) represents a novel species of the genus Virgibacillus, for which the name Virgibacillus halotolerans sp. nov. is proposed. The type strain is WS 4627(T) ( =DSM 25060(T) =LMG 26644(T)).

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