1887

Abstract

A Gram-stain-negative, facultatively anaerobic, rod-shaped and motile strain, designated PAMC 28425, was isolated from a sea surface microlayer sample from the Ross Sea, Antarctica. Analysis of the 16S rRNA gene sequence of strain PAMC 28425 showed an affiliation with the genus . Phylogenetic analyses revealed that strain PAMC 28425 formed a clade with MB8-11 and KMM 3635 with 16S rRNA gene sequence similarities of 98.3–98.6 %. Genomic relatedness analyses based on the average nucleotide identity and the genome-to-genome distance showed that strain PAMC 28425 is clearly distinguished from the phylogenetically close relatives. Cells of strain PAMC 28425 grew optimally at 25 °C and pH 7.5–8.5 in the presence of 1.0–3.0 % (w/v) sea salts. The major cellular fatty acids (>10 %) were Cω6 and/or Cω7, C, and Cω6 and/or Cω7. The genomic DNA G+C content was 39.7 mol%. On the basis of the phylogenetic, genomic, chemotaxonomic and phenotypic data presented, we propose the name sp. nov. with the type strain PAMC 28425 (=KCCM 43187=JCM 31286).

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2016-09-01
2022-01-20
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