Name: Peribacillus frigoritolerans (Delaporte and Sasson 1967) Montecillo and Bae 2022

Category: Species

Proposed as: comb. nov.

Basonym: Brevibacterium frigoritolerans Delaporte and Sasson 1967 (Approved Lists 1980)

Etymology: fri.go.ri.to’le.rans. L. masc. n. frigor, cold; L. pres. part. tolerans, tolerating; N.L. masc. part. adj. frigoritolerans, means cold-tolerating

Pronunciation (Latin), gender: … fri-go-ri-TO-le-rans, masculine

Type strain: ATCC 25097; CCUG 43489; CIP 67.20; DSM 8801; JCM 11681

Conduct genome-based taxonomy at

16S rRNA gene: GU252128 Analyse FASTA

Valid publication: Montecillo JAV, Bae H. Reclassification of Brevibacterium frigoritolerans as Peribacillus frigoritolerans comb. nov. based on phylogenomics and multiple molecular synapomorphies. Int J Syst Evol Microbiol 2022; 72:5389. 🇰🇷

IJSEM list: Oren A, Garrity GM. Notification list. Notification that new names and new combinations have appeared in volume 72, part 5 of the IJSEM. Int J Syst Evol Microbiol 2022; 72:5476.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name (and explicitly recommended for medical use)

• Synonyms:

  • Name	Kind
    Brevibacterium frigoritolerans Delaporte and Sasson 1967 (Approved Lists 1980)	homotypic synonym, validly published under the ICNP
    Bacillus frigoritolerans (Delaporte and Sasson 1967) Liu et al. 2022	homotypic synonym, validly published under the ICNP
    Peribacillus castrilensis Rodríguez et al. 2023	heterotypic synonym, validly published under the ICNP

• Emendations:
  • McLaughlin et al. 2025 McLaughlin RW, Myers M, Elshahed MS, Lawson PA, Miller SL. Genome-based reclassification of Peribacillus castrilensis Rodríguez et al. 2023 as a later heterotypic synonym of Peribacillus frigoritolerans (Delaporte and Sasson 1967) Montecillo and Bae 2022, and an emended description of Peribacillus frigoritolerans. International Journal of Systematic and Evolutionary Microbiology 2025; 75:0. 🇺🇸
    Notes:
    • 🫂 Emendation accompanied by a proposal regarding the synonymy of the species.

• Notes:
  • ⏰ According to McLaughlin et al. (2025), this species is an earlier heterotypic synonym of Peribacillus castrilensis Rodríguez et al. 2023. Publication: McLaughlin RW, Myers M, Elshahed MS, Lawson PA, Miller SL. Genome-based reclassification of Peribacillus castrilensis Rodríguez et al. 2023 as a later heterotypic synonym of Peribacillus frigoritolerans (Delaporte and Sasson 1967) Montecillo and Bae 2022, and an emended description of Peribacillus frigoritolerans. International Journal of Systematic and Evolutionary Microbiology 2025; 75:0. 🇺🇸
  • 😩 Deposit incorrectly indicated in some sources as representing the type strain of this taxon: CIP 67.
  • 🎓 Name mentioned 15 times in PubMed until 2025-06-04.
  • 🙆 This name is on the List of Recommended Names for bacteria of medical importance (LoRN) as the name to be applied to this species. The name is on LoRN because of the recorded risk group of the genus.

Parent taxon: Peribacillus Patel and Gupta 2020

Assigned by: Montecillo JAV, Bae H. Reclassification of Brevibacterium frigoritolerans as Peribacillus frigoritolerans comb. nov. based on phylogenomics and multiple molecular synapomorphies. Int J Syst Evol Microbiol 2022; 72:5389. 🇰🇷

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Record number: 28953