1887

Abstract

One slightly beige-white pigmented, Gram-stain-negative, rod-shaped bacterium, strain I-STPP5b, was isolated from the trachea of a Gentoo penguin chick individual () investigated in Fildes Bay, Chilean Antarctic (62° 12′ S, 58° 57′ W). I-STPP5b consists of a 3.4 Mb chromosome with a DNA G+C content of 44.4 mol%. Of the 3056 predicted genes, 1206 were annotated as hypothetical proteins and 51 were tRNAs. Phylogenetic analysis based on nearly full-length 16S rRNA gene sequences showed that the isolate shared a 16S rRNA gene sequence identity to the type strains of (98.8 %), and (both 98.3 %), (98.2 %) and (98.1 %), but 16S rRNA gene sequence similarities to all other species were ≤98.0 %. Partial nucleotide and amino acid sequence similarities among strain STPP5b and the next related type strains were all below 81.8 and 92.9%, respectively. DNA–DNA hybridisation (DDH) with LMG 5372, DSM 15389 and DSM 23635 also showed low values (all below 30 %). The main cellular fatty acids of the strain were Cω9c and Cω7c and/or Cω6c. Based on phylogenetic, chemotaxonomic, genomic and phenotypic analyses we propose a new species of the genus with the name sp. nov. and strain I-STPP5b (=CIP 111410= CCM 8799=LMG 30301) as type strain.

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2020-02-03
2020-11-30
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