1887

Abstract

A Gram-stain-negative, aerobic, non-motile and coccoid, ovoid or rod-shaped bacterial strain, designated MYP11, was isolated from seawater around Jeju island, Republic of Korea and identified by polyphasic taxonomic study. A neighbour-joining phylogenetic tree of 16S rRNA gene sequences showed that strain MYP11 joined the cluster comprising the type strains of , and , showing 16S rRNA gene sequence similarities of 96.3–96.8 %. Strain MYP11 exhibited 16S rRNA gene sequence similarity values of 94.2–94.9 % to the type strains of other species. In the dendrogram based on the average nucleotide identity values of genomic sequences, strain MYP11 formed an evolutionary lineage independent of those of species and other taxa. Strain MYP11 contained Q-10 as the predominant ubiquinone and C 7 and cyclo C 8 as the major fatty acids. The major polar lipids of strain MYP11 were phosphatidylcholine, phosphatidylglycerol, two unidentified lipids and one unidentified aminolipid. The DNA G+C content of strain MYP11 was 63.1 or 61.5 mol%. The differences in the fatty acid and polar lipid profiles and DNA G+C contents made it reasonable to distinguish strain MYP11 from the type strains of , and and those of other species. On the basis of the polyphasic data presented here, strain MYP11 is considered to constitute a new genus and species within the class , for which the name gen. nov., sp. nov. is proposed. The type strain is MYP11 (=KCTC 62899=NBRC 113544).

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2019-10-01
2019-10-21
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