1887

Abstract

A Gram-stain-negative, non-motile, rod-shaped, oxidase-positive, red-pigmented bacterium, strain N3, was isolated from Fuxian lake, a freshwater lake in Yunnan Province, PR China. Strain N3 was facultatively anaerobic, heterotrophic and negative for catalase. Optimal growth occurred at 30 °C (range 4–45 °C), pH 7.0–8.0 (range 6.5–9.5) and in the presence of 0–3 % (w/v) NaCl (range 0–3 %). The results of phylogenetic analysis based on 16S rRNA gene sequencing revealed that strain N3 was close to the type strains of , and with sequence similarities of 97.4, 97.3 and 97.2 % respectively. The G+C content of the genomic DNA was 43.9 mol%. The quinone system contained menaquinone MK-7 as the sole component. The major fatty acids were iso-C, summed feature 9 (10-methyl C and/or iso-C 9), summed feature 3 (C 6 and/or C ) and iso-C. Major polar lipids were phosphatidylcholine, phosphatidylethanolamine, an unidentified glycolipid, one unidentified phospholipid, two unidentified aminolipids and four unidentified lipids. On the basis of physiological, chemotaxonomic and molecular properties as well as phylogenetic distinctiveness, strain N3 should be placed into the genus as a novel species, for which the name sp. nov. is proposed. The type strain is N3 (=KCTC 62622=MCCC 1H00308).

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2019-10-16
2019-11-14
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