Gangjinia marincola gen. nov., sp. nov., a marine bacterium of the family Flavobacteriaceae

Abstract

A novel strictly aerobic, orange-pigmented, Gram-stain-negative bacterium, designated strain GJ16T, was isolated from coastal seawater of Gangjin Bay, the southernmost part of the Korean peninsula, and subjected to a polyphasic taxonomic study. It grew optimally at 25–30 °C, at pH 7.0–8.0 and in the presence of 3 % NaCl. Comparative 16S rRNA gene sequence analysis revealed that strain GJ16T formed a distinct lineage within the family Flavobacteriaceae and shared less than 91.2 % 16S rRNA gene sequence similarity with members of the genera Leptobacterium, Zhouia, Winogradskyella, Dokdonia and Krokinobacter. The predominant cellular fatty acids were iso-C15 : 0 (40.2 %), iso-C15 : 1 G (12.8 %), iso-C17 : 0 3-OH (11.2 %) and C15 : 0 (6.6 %). The G+C content of the genomic DNA was 39.4 mol% and the major respiratory isoprenoid quinone was MK-6. On the basis of phenotypic and genotypic data, strain GJ16T represents a novel species in a new genus in the family Flavobacteriaceae, for which the name Gangjinia marincola gen. nov., sp. nov. is proposed; the type strain is GJ16T (=KCTC 22649T =JCM 16082T).

Aliiroseovarius pelagivivens gen. nov., sp. nov., isolated from seawater, and reclassification of three species of the genus Roseovarius as Aliiroseovarius crassostreae comb. nov., Aliiroseovarius halocynthiae comb. nov. and Aliiroseovarius sediminilitoris comb. nov.

“…A variety of coastal seawaters of the South Sea of the Korean Peninsula have been proven to be good sources to isolate novel bacteria (Lee et al , 2011; Jung et al , 2012; Park et al , 2013; Yoon et al , 2013a, b). During isolation of novel bacteria from seawater off Geoje Island in the South Sea of the Korean Peninsula, many novel bacterial strains have been isolated and characterized taxonomically.…”

Characterization of an alkaline esterase from an enriched metagenomic library derived from an oil-spill area

“…Marine microorganisms can serve as an untapped source of industrial biocatalysts, which are different from terrestrial microorganisms. We isolated two novel strains from an oil-contaminated seashore to degrade the contaminants [7,8]. We also have previously reported two novel enzymes, a family IV esterase and a family I.…”

Marivivens donghaensis gen. nov., sp. nov., isolated from seawater

“…The western and southern coasts of the Korean Peninsula have been proven to be good habitats for novel bacterial taxa (Lee et al, 2011;Jung et al, 2012a, b;Park et al, 2013cPark et al, , 2014aKwak et al, 2014). However, during a recent screening of novel bacterial taxa from the seawater around the eastern coast of the Korean Peninsula, many novel strains have been isolated and characterized taxonomically (Park et al, 2014b).…”