Species Calidifontibacillus azotoformans

Name: Calidifontibacillus azotoformans (Pichinoty et al. 1983 ex Pichinoty et al. 1976) Adiguzel et al. 2020

Category, proposed as: species, comb. nov.

Basonym: Bacillus azotoformans (ex Pichinoty et al. 1976) Pichinoty et al. 1983

Etymology: a.zo.to.for’mans. French masc. n. azote, nitrogen; N.L. neut. n. azotum, nitrogen; L. pres. part. formans, forming; N.L. masc. part. adj. azotoformans, nitrogen-forming

Pronunciation (Latin), gender: ka-li-di-fon-ti-ba-KIL-lus a-zo-to-FOR-mans, masculine

Type strain: 1; ATCC 29788; CCM 2849; CCUG 28517; CIP 77.28; CIP R925; DSM 1046; HAMBI 1884; IFO 15712; JCM 12210; LMG 9581; NBRC 15712; NCIB 11859; NCIMB 11859; NRRL B-14310; NRRL B-14522

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AB363732 Analyse FASTA

Valid publication: Adiguzel A, Ay H, Baltaci MO, Akbulut S, Albayrak S, Omeroglu MA. Genome-based classification of Calidifontibacillus erzurumensis gen. nov., sp. nov., isolated from a hot spring in Turkey, with reclassification of Bacillus azotoformans as Calidifontibacillus azotoformans comb. nov. and Bacillus oryziterrae as Calidifontibacillus oryziterrae comb. nov. Int J Syst Evol Microbiol 2020; 70:6418-6427. 🇹🇷

IJSEM list: Oren A, Garrity GM. Notification list. Notification that new names and new combinations have appeared in volume 70, part 12 of the IJSEM. Int J Syst Evol Microbiol 2021; 71:4656.

Nomenclatural status: validly published under the ICNP, illegitimate name

Taxonomic status: synonym (and not recommended for medical use)

Correct name: Schinkia azotoformans (Pichinoty et al. 1983 ex Pichinoty et al. 1976) Gupta et al. 2020

Risk group: 1

• Synonyms:

  • Name	Kind
    Schinkia azotoformans (Pichinoty et al. 1983 ex Pichinoty et al. 1976) Gupta et al. 2020	homotypic synonym, validly published under the ICNP
    Bacillus azotoformans (ex Pichinoty et al. 1976) Pichinoty et al. 1983	homotypic synonym, validly published under the ICNP

• 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 1 time in PubMed until 2026-06-11.
  • 🙅 This name is on the List of Recommended Names for bacteria of medical importance (LoRN) as a synonym of the name to be applied to this species. The name is on LoRN because of the recorded risk group of other species in the genus.
  • 🧍 Calidifontibacillus azotoformans (Pichinoty et al. 1983) Adiguzel et al. 2020 is illegitimate because it is a homotypic synonym of a type species with a genus name that has priority. Publication: Gupta RS, Patel S, Saini N, Chen S. Robust demarcation of 17 distinct Bacillus species clades, proposed as novel Bacillaceae genera, by phylogenomics and comparative genomic analyses: description of Robertmurraya kyonggiensis sp. nov. and proposal for an emended genus Bacillus limiting it only to the members of the Subtilis and Cereus clades of species. Int J Syst Evol Microbiol 2020; 70:5753-5798. 🇨🇦

Parent taxon: Calidifontibacillus Adiguzel et al. 2020

Assigned by: Adiguzel A, Ay H, Baltaci MO, Akbulut S, Albayrak S, Omeroglu MA. Genome-based classification of Calidifontibacillus erzurumensis gen. nov., sp. nov., isolated from a hot spring in Turkey, with reclassification of Bacillus azotoformans as Calidifontibacillus azotoformans comb. nov. and Bacillus oryziterrae as Calidifontibacillus oryziterrae comb. nov. Int J Syst Evol Microbiol 2020; 70:6418-6427. 🇹🇷

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Record number: 14565