Photobacterium lutimaris sp. nov., isolated from a tidal flat sediment in Korea

Abstract

A Gram-negative, motile, pale-yellow-pigmented, oval-shaped bacterial strain, DF-42T, was isolated from a tidal flat sediment in Korea. Strain DF-42T grew optimally at 25-30 degrees C and in the presence of 2-3 % (w/v) NaCl. It contained Q-8 as the predominant ubiquinone and C(16 : 0), C(18 : 1)omega7c and summed feature 3 (C(16 : 1)omega7c and/or iso-C(15 : 0) 2-OH) as the major fatty acids. The DNA G+C content was 48.3 mol%. Phylogenetic trees based on 16S rRNA gene sequences showed that strain DF-42T falls within the evolutionary radiation enclosed by the genus Photobacterium. Strain DF-42T exhibited 16S rRNA gene sequence similarity values of 93.8-97.9 % to the type strains of Photobacterium species with validly published names. DNA-DNA relatedness data and differential phenotypic properties made it possible to categorize strain DF-42T as representing a species that is separate from previously described Photobacterium species. The name Photobacterium lutimaris sp. nov. is proposed, with strain DF-42T (=KCTC 12723T=JCM 13586T) as the type strain.