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

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Abstract

A Gram-stain-negative, aerobic, non-motile and ovoid or rod-shaped bacterial strain, designated OITF-44T, was isolated from a tidal flat in Oido, an island of the Republic of Korea. Strain OITF-44T grew optimally at 25°C and in the presence of 2.0% (w/v) NaCl. The phylogenetic trees based on 16S rRNA gene sequences revealed that strain OITF-44T formed an independent lineage within the clade comprising the genera Lutimonas, Taeania, Actibacter and Namhaeicola. The novel strain exhibited 16S rRNA gene sequence similarity values of 93.9–95.7% to the type strains of the species of the genera Lutimonas, Taeania, Actibacter and Namhaeicola, and of less than 93.5% to the type strains of other recognized species. Strain OITF-44T contained MK-6 as the predominant menaquinone and iso-C15: 0, iso-C15: 1 G, iso-C16: 1 H and iso-C16: 0 3-OH as the major fatty acids. The major polar lipids of strain OITF-44T were phosphatidylethanolamine, one unidentified lipid and one unidentified phospholipid. The DNA G+C content of strain OITF-44T was 33.9 mol%. The chemotaxonomic data and other differential phenotypic properties made it reasonable to distinguish strain OITF-44T from the type strains of the type species of the genera Lutimonas, Taeania, Actibacter and Namhaeicola. On the basis of the data presented here, strain OITF-44T is considered to constitute a new genus and species within the family Flavobacteriaceae, for which the name Aestuariimonas insulae gen. nov., sp. nov. is proposed. The type strain of Aestuariimonas insulae is OITF-44T (=KACC 19569T=KCTC 62197T =DSM 105891T=NBRC 113118T).

Original languageEnglish
Article number002684
Pages (from-to)1365-1371
Number of pages7
JournalInternational Journal of Systematic and Evolutionary Microbiology
Volume68
Issue number4
DOIs
StatePublished - Apr 2018

Keywords

  • Aestuariimonas insulae
  • Novel genus
  • Novel species
  • Polyphasic taxonomy
  • Tidal flat sediment

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