Species Polynucleobacter asymbioticus

Name: Polynucleobacter asymbioticus (Hahn et al. 2009) Hahn et al. 2016

Category, proposed as: species, comb. nov.

Basonym: Polynucleobacter necessarius subsp. asymbioticus Hahn et al. 2009

Etymology: a.sym.bi.o’ti.cus. Gr. pref. a-, not (inseparable prefix); N.L. adj. symbioticus -a -um, living together; N.L. masc. adj. asymbioticus, not symbiotic

Pronunciation (Latin), gender: po-ly-nu-kle-o-BAK-ter a-sym-bi-O-ti-kus, masculine

Type strain: CIP 109841; DSM 18221; QLW-P1DMWA-1

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AJ879783 Analyse FASTA

Valid publication: Hahn MW, Schmidt J, Pitt A, Taipale SJ, Lang E. Reclassification of four Polynucleobacter necessarius strains as representatives of Polynucleobacter asymbioticus comb. nov., Polynucleobacter duraquae sp. nov., Polynucleobacter yangtzensis sp. nov. and Polynucleobacter sinensis sp. nov., and emended description of Polynucleobacter necessarius. Int J Syst Evol Microbiol 2016; 66:2883-2892. 🇦🇹

IJSEM list: Oren A, Garrity GM. Notification list. Notification that new names and new combinations have appeared in volume 66, part 8 of the IJSEM. Int J Syst Evol Microbiol 2016; 66:4306-4309.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Synonyms:

  • Name	Kind
    Polynucleobacter necessarius subsp. asymbioticus Hahn et al. 2009	homotypic synonym, validly published under the ICNP, distinct rank

• Notes:
  • 😷 The risk group for Germany has been imported on 2026-08-13. The full classification is: risk group = 1. — If in doubt, use the risk group given in the regulations for your country and, if these are not available, use the risk group given in the catalogue of the culture collection from which you have obtained or intend to obtain the strain.
  • 🎓 Name mentioned 6 times in PubMed until 2026-06-11.

Parent taxon: Polynucleobacter Heckmann and Schmidt 1987

Assigned by: Hahn MW, Schmidt J, Pitt A, Taipale SJ, Lang E. Reclassification of four Polynucleobacter necessarius strains as representatives of Polynucleobacter asymbioticus comb. nov., Polynucleobacter duraquae sp. nov., Polynucleobacter yangtzensis sp. nov. and Polynucleobacter sinensis sp. nov., and emended description of Polynucleobacter necessarius. Int J Syst Evol Microbiol 2016; 66:2883-2892. 🇦🇹

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Record number: 794407