Alteromonas aestuariivivens sp. nov., isolated from a tidal flat

A Gram-stain-negative, aerobic, non-spore-forming, motile and ovoid or rod-shaped bacterial strain, JDTF-113^T, was isolated from a tidal flat in Jindo, an island of South Korea. Strain JDTF-113^T grew optimally at 30 ºC, at pH 7.0–8.0 and in the presence of 2.0% (w/v) NaCl. A neighbour-joining phylogenetic tree, based on 16S rRNA gene sequences, revealed that strain JDTF-113^T fell within the clade enclosing the type strains of species of the genus Alteromonas. Strain JDTF-113^T exhibited 16S rRNA gene sequence similarity values of 97.1–98.1% to the type strains of Alteromonas lipolytica, Alteromonas litorea, Alteromonas mediterranea, Alteromonas confluentis, Alteromonas hispanica, Alteromonas genovensis and Alteromonas marina, and of 94.8–96.9% to those of the other species of the genus Alteromonas. Strain JDTF-113^T contained Q-8 as the predominant ubiquinone and C_{16: 0}, summed feature 3 (C_{16: 1}ω7c and/or C_{16: 1}ω6c) and C_{18: 1}ω7c as the major fatty acids. The major polar lipids of strain JDTF-113^T were phosphatidylethanolamine, phosphatidylglycerol and one unidentified glycolipid. The DNA G+C content of strain JDTF-113^T was 51.1 mol% and its mean DNA–DNA relatedness values with the type strains of seven closely phylogenetically related species of the genus Alteromonaswere was 10–23 %. The differential phenotypic properties and phylogenetic and genetic distinctiveness support strain JDTF-113^T being separated from species of the genus Alteromonas with validly published names. On the basis of the data presented, strain JDTF-113^T is considered to represent a novel species of the genus Alteromonas, for which the name Alteromonas aestuariivivens sp. nov. is proposed. The type strain is JDTF-113^T (=KCTC 52655^T=NBRC 112708^T).