Name: Ideonella azotifigens Noar and Buckley 2009

Category: Species

Proposed as: sp. nov.

Etymology: a.zo.ti.fi’gens. N.L. neut. n. azotum, nitrogen; from French masc. n. azote, nitrogen; from Gr. pref. a-, not (inseparable prefix); from Gr. fem. n. zôê, life; from N.Gr. fem. n. azôê, not sustaining life; L. inf. v. figere, to fix, attach; N.L. fem. part. adj. azotifigens, nitrogen-fixing

Gender: feminine

Type strain: 1a22; DSM 21438; JCM 15503

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: EU542576 Analyse FASTA

Valid publication: Noar JD, Buckley DH. Ideonella azotifigens sp. nov., an aerobic diazotroph of the Betaproteobacteria isolated from grass rhizosphere soil, and emended description of the genus Ideonella. Int J Syst Evol Microbiol 2009; 59:1941-1946.

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: correct name

Risk group: 1

• Notes:
  • 😷 The risk group for Germany has been imported on 2023-10-29. 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 2 times in PubMed until 2024-03-27.

Parent taxon: Ideonella Malmqvist et al. 1994

Assigned by: Noar JD, Buckley DH. Ideonella azotifigens sp. nov., an aerobic diazotroph of the Betaproteobacteria isolated from grass rhizosphere soil, and emended description of the genus Ideonella. Int J Syst Evol Microbiol 2009; 59:1941-1946.

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Record number: 788044