Psychrobacter pygoscelis sp. Nov. isolated from the penguin pygoscelis papua

Peter Kämpfer, Stefanie P. Glaeser, Rute Irgang, Guillermo Fernández-Negrete, Matías Poblete-Morales, Derie Fuentes-Messina, Marcelo Cortez San Martín, Ruben Avendaño-Herrera

Research output: Contribution to journalArticlepeer-review

8 Citations (Scopus)


One slightly beige-white pigmented, Gram-stain-negative, rod-shaped bacterium, strain I-STPP5bT, was isolated from the trachea of a Gentoo penguin chick individual (Pygoscelin papua) investigated in Fildes Bay, Chilean Antarctic (62° 12′ S, 58° 57′ W). I-STPP5bT 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 Psychrobacter phenylpyruvicus (98.8%), Psychrobacter arenosus and Psychrobacter pasteurii (both 98.3%), Psychrobacter piechaudii (98.2%) and Psychrobacter sanguinis (98.1%), but 16S rRNA gene sequence similarities to all other Psychrobacter species were ≤98.0%. Partial gyrB nucleotide and amino acid sequence similarities among strain STPP5bT and the next related type strains were all below 81.8 and 92.9%, respectively. DNA–DNA hybridisation (DDH) with P. phenylpyruvicus LMG 5372T, P. arenosus DSM 15389T and P. sanguinis DSM 23635T also showed low values (all below 30%). The main cellular fatty acids of the strain were C18:1 ω9c and C16:1 ω7c and/or C16:1 ω6c. Based on phylogenetic, chemotaxonomic, genomic and phenotypic analyses we propose a new species of the genus Psychrobacter, with the name Psychrobacter pygoscelis sp. nov. and strain I-STPP5bT (=CIP 111410T= CCM 8799T=LMG 30301T) as type strain.

Original languageEnglish
Article number003739
Pages (from-to)211-219
Number of pages9
JournalInternational Journal of Systematic and Evolutionary Microbiology
Issue number1
Publication statusPublished - 1 Jan 2020


  • Penguin
  • Psychrobacter
  • Psychrobacter pygoscelis

ASJC Scopus subject areas

  • Microbiology
  • Ecology, Evolution, Behavior and Systematics


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