4.4 Article

lamia majanohamensis gen. nov., sp nov., an actinobacterium isolated from sea cucumber Holothuria edulis, and proposal of lamiaceae fam. nov.

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MICROBIOLOGY SOC
DOI: 10.1099/ijs.0.005611-0

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  1. Ministry of Education, Culture, Sports, Science, and Technology of Japan [17310135]
  2. New Energy and Industrial Technology Development Organization
  3. Grants-in-Aid for Scientific Research [17310135] Funding Source: KAKEN

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A novel, Gram-positive bacterial strain, F12(T), was isolated from the abdominal epidermis of a sea cucumber, Holothuria edulis, collected from seawater off the coast of Japan. According to 16S rRNA gene sequence analysis, this strain represents a novel, deep-rooting lineage within the class Actinobacteria and clusters with uncultured bacteria and Acidimicrobium ferrooxidans. Compared to species with validly published names, the highest 16S rRNA gene sequence similarity (89.8%) was to Acidimicrobium ferrooxidans DSM 10331(T). Phylogenetic analyses showed that strain F12(T) represents a distinct phylogenetic lineage related closely to the genus Acidimicrobium. Strain F12(T) contained MK-9(H-6) as the major menaquinone, whilst 17 : 0, 17 : 1 omega 8c, 15 : 0 and 16 : 0 were the major cellular fatty acids. The cell-wall peptidoglycan of strain F12(T) was composed of meso-diaminopimelic acid as the diagnostic diamino acid, alanine and glutamic acid (1 : 2 : 1). The cell-wall sugars detected were rhamnose, mannose, arabinose, galactose and xylose. The G + C content of the DNA was 74.4 mol%. From the taxonomic data obtained in this study, the name lamia majanohamensis gen. nov., sp. nov. is proposed for the isolate, with type strain F12T (=NBRC 102561(T)=DSM 19957(T)). The name lamiaceae fam. nov. is also proposed for the distinct phyletic line represented by the genus lamia.

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