Taeania maliponensis gen. nov., sp. nov., a member of the family Flavobacteriaceae isolated from seawater

Abstract

A Gram-strain-negative, rod-shaped, non-motile bacterial strain, designated MM-8T, was isolated from seawater in the Korean peninsula. Strain MM-8T was found to grow optimally at pH 7.0-8.0, at 30 °C and in the presence of 2% (w/v) NaCl. A neighbour-joining phylogenetic tree based on 16S rRNA gene sequences showed that strain MM-8T falls within the clade comprising members of the genera Actibacter, Lutimonas and Namhaeicolain the family Flavobacteriaceae. Strain MM-8T exhibited 16S rRNA gene sequence similarity values of 94.4-96.9% with respect to the type strains of members of the genera Actibacter, Lutimonas and Namhaeicola. Strain MM-8T was found to contain MK-6 (90.0 %) and MK-7 (10.0 %) as the predominant menaquinones and iso-C15: 0 (32.4%), iso-C15: 1 G(11.4 %) and iso-C15: 0 3-OH (10.1 %) as the major fatty acids. The major polar lipids were identified as phosphatidylethanolamine and an unidentified lipid. The DNA G+C content of strain MM-8T was determined to be 40.7 mol%. Differential phenotypic properties, together with the phylogenetic distinctiveness, demonstrate that strain MM-8T is distinguishable from the type strains of type species of the genera Actibacter, Lutimonas and Namhaeicola. On the basis of the data presented, strain MM-8T is considered to represent a novel genus and species, for which the name Taeania maliponensis gen. nov., sp. nov. is proposed. The type strain is MM-8T (=KCTC 52209T=NBRC 112238T).