1887

Abstract

A Gram-positive, non-motile, coccoid- to rod-shaped, non-spore-forming bacterium, designated strain YM18-15, was isolated from sea sand and studied using a polyphasic taxonomic approach. Strain YM18-15 grew under both aerobic and anaerobic conditions. The cell-wall peptidoglycan type was A4 and ornithine was the diagnostic diamino acid. The polar lipids were phosphatidylglycerol, diphosphatidylglycerol, phosphatidylinositol and an unknown phospholipid, MK-8(H) was the major menaquinone and the predominant fatty acids were anteiso-C and C. The DNA G+C content was 74.2 mol%. High 16S rRNA gene sequence similarities (96.3–97.3 %) were found with the sequences of the type strains of the three genera of the family . Phylogenetic analysis based on 16S rRNA gene sequences showed that strain YM18-15 formed a clade with , and . Strain YM18-15 differed from these three type strains in chemotaxonomic characteristics and in 16S rRNA gene signature nucleotides. Based on genetic and chemotaxonomic evidence, it is suggested that strain YM18-15 represents a novel species of a new genus within the family , for which the name gen. nov., sp. nov. is proposed. The type strain of the type species is YM18-15 (=NBRC 106267=KCTC 19750=MBIC 08348).

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2011-01-01
2020-09-26
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