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Published online ahead of print on 30 October 2009 as doi:ijs.0.018242-0
Int J Syst Evol Microbiol (2009); DOI 10.1099/ijs.0.018242-0
© 2009 International Union of Microbiological Societies
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Marmoricola scoriae sp. nov., isolated from volcanic ash

Dong Wan Lee and Soon Dong Lee1

Jeju National University

1 E-mail: sdlee{at}jejunu.ac.kr

A novel Gram-positive, coccoid-shaped actinomycete, designated strain Sco-D01T, was isolated from volcanic ash collected from Oreum (a parasitic volcano) in Jeju Island, Republic of Korea. Cells were aerobic, oxidase-negative and catalase-positive. Colonies of the cells were vivid yellow-coloured, circular, smooth and convex. The diagnostic diamino acid in the cell wall was LL-diaminopimelic acid. The predominant menaquinone was MK-8(H4). The polar lipids were phosphatidylinositol, diphosphatidylglycerol, phosphatidylglycerol, phosphatidylcholine and unknown phospholipids. The fatty acid profiles were represented by large amounts of saturated, unsaturated, 10-methyl and hydroxyl fatty acids. The DNA G+C content was 72.0 mol%. A 16S rRNA gene sequence analysis revealed that strain Sco-D01T belonged to the family Nocardioidaceae and formed a distinct sublineage within the radiation of the genus Marmoricola. Level of DNA-DNA relatedness of strain Sco-D01T to its closest relative was 30.2% (35.4% in duplicate measurements) to Marmoricola aurantiacus DSM 12652T. On the basis of the phenotypic and DNA-DNA hybridization data, strain Sco-D01T (=KCTC 19597T =DSM 22127T) is considered to represent a novel species of the genus Marmoricola, for which the names Marmoricola scoriae sp. nov. is proposed.






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