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Abstract

A Gram-staining-negative, aerobic, yellow, non-flagellated, non-gliding, rod-shaped bacterium, designated strain IMCC1021, was isolated off the coast of the East Sea. Optimal growth of strain IMCC1021 was observed at 25 °C, pH 7.0–7.5 and in the presence of 3.0–3.5 % (w/v) NaCl. Phylogenetic analysis based on 16S rRNA gene sequences revealed that the strain belonged to the genus , showing a close relationship with KMM 6059 (97.4 % similarity) followed by MDSW-25 (96.1 %). DNA–DNA relatedness between strain IMCC1021 and KMM 6059 was 17.5 % (reciprocal 7.4 %), which indicated that the new isolate represents a novel genomic species of the genus . The major fatty acids were iso-C and iso-C 3-OH, and the G+C content of the genomic DNA was 41.4 mol%. Strain IMCC1021 contained menaquinone-6 (MK-6) as the respiratory quinone, and polar lipids comprising phosphatidylethanolamine, two unknown aminolipids and three unknown polar lipids. On the basis of the phylogenetic distinctions and differential phenotypic characteristics, it is suggested that strain IMCC1021 ( = KCTC 32320 = NBRC 109485) should be assigned to the genus as the type strain of a novel species, for which the name sp. nov. is proposed.

Funding
This study was supported by the:
  • National Institute of Biological Resources (NIBR), Ministry of Environment
  • Ministry of Science, ICT and Future Planning (Award NRF-2013R1A2A2A01068004)
  • Inha University Research Grant
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2015-01-01
2021-10-25
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