Poseidonibacter parvus sp. Nov., isolated from a squid

Min Ji Kim, Min Gyung Baek, Su Kyoung Shin, Hana Yi

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6 Citations (Scopus)


A Gram-stain-negative, aerobic, short rod-shaped, motile, brownish-coloured bacterium, termed strain LPB0137T, was isolated from a squid. Its cells could grow weakly on marine agar 2216 with 0.04% 2,3,5-triphenyl tetrazolium chloride (TTC). Each cell of strain LPB0137T has a circular chromosome with a length of 2.87 Mb and 27.7 mol% DNA G+C content. The genome includes 2698 protein-coding genes and six rRNA operons. In 16S rRNA gene sequence trees, strain LPB0137T formed a robust mono-phyletic clade with Poseidonibacter antarcticus SM1702T with a sequence similarity of 98.3%. However, the average nucleotide identity and in silico DNA–DNA hybridization values between the two type strains were low (83.9 and 28.1%, respectively). The overall phenotypic and genomic features of strain LPB0137T supported its assignment to the genus Poseidonibacter. However, the relatively low gene and genome sequence similarity between this strain and other type strains of the genus Poseidonibacter and several enzymatic characteristics indicated the taxonomic novelty of the isolated strain as a new member of the genus Poseidonibacter. Therefore, based on the phylogenetic and phenotypic characteristics of LPB0137T, we proposed a novel species of the genus Poseidonibacter for it, with the name Poseidonibacter parvus sp. nov. The type strain of this new species is thus LPB0137T (=KACC 18888T=JCM 31548T).

Original languageEnglish
Article number004590
Pages (from-to)1-7
Number of pages7
JournalInternational Journal of Systematic and Evolutionary Microbiology
Issue number1
Publication statusPublished - 2021

Bibliographical note

Funding Information:
This study was supported by the Survey of Korean Indigenous Species Programme through the National Institute of Biological Resources (NIBR) funded by the Korean Ministry of Environment, by the Strategic Initiative for Microbiomes in Agriculture and Food, funded by the Ministry of Agriculture, Food and Rural Affairs (918010-4), and by the National Research Foundation of Korea (NRF) grant funded by the Korea Government (MSIT) (No. 2019R1F1A1059925).

Publisher Copyright:
© 2021 The Authors.


  • Arcobacter
  • Arcobacter peruensis
  • Poseidonibacter parvus
  • Squid

ASJC Scopus subject areas

  • Microbiology
  • Ecology, Evolution, Behavior and Systematics


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