A bacterial strain, Y8, capable of oxidizing carbon monoxide, was isolated from a soil sample collected from a roadside in Seoul, Korea. On the basis of 16S rRNA gene sequence similarity analyses, strain Y8 was shown to belong to the genus and was related most closely to the type strain of (99.6 % similarity). The cells were aerobic and stained Gram-positive, with white aerial mycelium and brown substrate mycelium. The predominant fatty acids were 16 : 0 iso and 16 : 1 iso. The cell-wall peptidoglycan of strain Y8 contained -diaminopimelic acid. The DNA G+C content was 77 mol%. Strain Y8 contained MK-9 as the major menaquinone, which is different from the major menaquinone reported previously in the genus , MK-8(H). DNA–DNA relatedness between strain Y8 and the type strains of and was respectively 10 and 63 %. Based on phylogenetic, morphological and chemotaxonomic evidence, it is proposed that strain Y8 (=KCCM 42678 =JCM 14827) be classified as the type strain of a novel species, sp. nov. An emended description of the genus is also presented.


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[PDF file of Supplementary Tables S1 and S2](82 KB)


[PDF file of Supplementary Tables S1 and S2](82 KB)


Scanning electron micrograph of aerial mycelium of strain Y8 grown on Bennett's medium for 14 days at 25 °C. Bar, 2 µm.

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