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

Category: Subspecies

Proposed as: subsp. nov.

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

Gender: 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, Lang E, Brandt U, Wu QL, Scheuerl T. Emended description of the genus Polynucleobacter and the species Polynucleobacter necessarius and proposal of two subspecies, P. necessarius subsp. necessarius subsp. nov. and P. necessarius subsp. asymbioticus subsp. nov. Int J Syst Evol Microbiol 2009; 59:2002-2009.

IJSEM list: Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 59, part 8 of the IJSEM. Int J Syst Evol Microbiol 2009; 59:2649-2650.

Nomenclatural status: validly published under the ICNP

Taxonomic status: synonym

Correct name: Polynucleobacter asymbioticus (Hahn et al. 2009) Hahn et al. 2016

Risk group: 1

• Synonyms:

  • Name	Kind
    Polynucleobacter asymbioticus (Hahn et al. 2009) Hahn et al. 2016	homotypic synonym, validly published under the ICNP, distinct rank

• Notes:
  • ❗ Polynucleobacter necessarius subsp. asymbioticus is the correct name instead if this subspecies is regarded as a separate subspecies (i.e., if its nomenclatural type is not assigned to another subspecies whose name is validly published, legitimate and not rejected and has priority) within a separate species Polynucleobacter necessarius within a separate genus Polynucleobacter.
  • 😷 The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 1.
  • 🧍 The genome of the type strain was sequenced as part of the DOE Joint Genome Institute Community Sequencing Programme. Publication: Meincke L, Copeland A, Lapidus A, Lucas S, Berry KW, Del Rio TG, Hammon N, Dalin E, Tice H, Pitluck S, et al. Complete genome sequence of Polynucleobacter necessarius subsp. asymbioticus type strain (QLW-P1DMWA-1^T). Stand Genomic Sci 2012; 6:74-83.

Parent taxon: Polynucleobacter necessarius Heckmann and Schmidt 1987

Assigned by: Hahn MW, Lang E, Brandt U, Wu QL, Scheuerl T. Emended description of the genus Polynucleobacter and the species Polynucleobacter necessarius and proposal of two subspecies, P. necessarius subsp. necessarius subsp. nov. and P. necessarius subsp. asymbioticus subsp. nov. Int J Syst Evol Microbiol 2009; 59:2002-2009.

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Record number: 787990