Aestuariivivens insulae gen. nov., sp. Nov., isolated from a tidal flat

A Gram-stain-negative, non-motile, aerobic, ovoid or rod-shaped bacterium, designated AH-MY3^T, was isolated from a tidal flat on Aphae island of the south-western sea, South Korea, and subjected to a polyphasic taxonomic study. Strain AH-MY3^T grew optimally at 35 °C, at pH 7.0–8.0 and in the presence of 2.0–3.0 % (w/v) NaCl. A neighbour-joining phylogenetic tree based on 16S rRNA gene sequences showed that strain AH-MY3^T joined the cluster comprising the type strains of Yeosuana aromativorans, Snuella lapsa and Meridianimaribacter flavus, showing sequence similarities of 93.9, 93.7 and 92.6 %, respectively. Strain AH-MY3^T exhibited 16S rRNA gene sequence similarity values of 94.0–94.7 % to the type strains of ‘Aestuariibaculum scopimerae’, Winogradskyella aquimaris, Winogradskyella poriferorum and Gaetbulibacter aestuarii. Strain AH-MY3^T contained MK-6 as the predominant menaquinone. The fatty acid and polar lipid profiles of strain AH-MY3^T could be distinguished from those of the type strains of phylogenetically related taxa. The DNA G+C content of strain AH-MY3^T was 37 mol%. The phylogenetic data and differential chemotaxonomic and other phenotypic properties revealed that strain AH-MY3T represents a novel genus and species within the family Flavobacteriaceae, for which the name Aestuariivivens insulae gen. nov., sp. nov. is proposed. The type strain of Aestuariivivens insulae is AH-MY3^T (=KCTC 42350^T=NBRC 110723^T).