1887

Abstract

A polyphasic taxonomic study was performed on strain YM26-026, which was isolated from acid-treated sediment in Kamaishi, Japan. The bacterial cells were pale-pink-pigmented, Gram-negative, obligately aerobic, non-spore-forming, spherical and non-motile. Phylogenetic analysis based on 16S rRNA gene sequences showed that the novel isolate was a member of the phylum ‘’ and shared approximately 84–87 % sequence similarity with strains of the class that have been cultivated to date. Strain YM26-026 produced pale-pink pigments of carotenoid. -Lactam antibiotic susceptibility tests and amino acid analysis of cell-wall hydrolysates indicated that the novel isolate did not contain muramic acid or diaminopimelic acid in the cell wall, suggesting that the strain lacks peptidoglycan. The G+C content of the DNA of strain YM26-026 was 54.0 mol%. Menaquinone-7 was the major quinone and C and C 9 were the major fatty acids. On the basis of polyphasic taxonomic studies, it was concluded that strain YM26-026 represents a new genus of the family within the phylum ‘’, for which the name gen. nov., sp. nov. is proposed. The type strain is YM26-026 (=MBIC08280=KCTC 12870).

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2007-09-01
2020-07-14
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