Name: Psychrobacillus psychrotolerans (Abd El-Rahman et al. 2002) Krishnamurthi et al. 2011

Category: Species

Proposed as: comb. nov.

Basonym: Bacillus psychrotolerans Abd El-Rahman et al. 2002

Etymology: psy.chro.to’le.rans. Gr. masc. adj. psychros, cold; L. pres. part. tolerans, tolerating; N.L. masc. part. adj. psychrotolerans, cold-tolerating

Gender: masculine

Type strain: 3H1; CIP 107792; DSM 11706; NCIMB 13838

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AJ277983 Analyse FASTA

Effective publication: Krishnamurthi S, Ruckmani A, Pukall R, Chakrabarti T. Psychrobacillus gen. nov. and proposal for reclassification of Bacillus insolitus Larkin & Stokes, 1967, B. psychrotolerans Abd-El Rahman et al., 2002 and B. psychrodurans Abd-El Rahman et al., 2002 as Psychrobacillus insolitus comb. nov., Psychrobacillus psychrotolerans comb. nov. and Psychrobacillus psychrodurans comb. nov. Syst Appl Microbiol 2010; 33:367-373.

IJSEM list: Euzeby JP. Validation list no. 139. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2011; 61:1011-1013.

Nomenclatural status: validly published under the ICNP

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

Risk group: 1

• Synonyms:

  • Name	Kind
    Bacillus psychrotolerans Abd El-Rahman et al. 2002	homotypic synonym, validly published under the ICNP

• Notes:
  • 🧬 The phylogenomic assignment score of this taxon is -0.06619 (N = 11).
  • 😷 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 5 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 other species in the genus.
  • 🧍 In the title of the effective publication, the personal name Abd El-Rahman is erroneously cited asAbd-El Rahman. Publication: Euzeby JP. List of Bacterial Names with Standing in Nomenclature: a folder available on the Internet. Int J Syst Bacteriol 1997; 47:590-592.
  • 🧍 The distinct name Psychrobacillus psychrodurans from the same publication has a similar spelling. Publication: Angell RC, Freund GE, Willett P. Automatic spelling correction using a trigram similarity measure. Information Processing and Management 1983; 19:255-261.

Parent taxon: Psychrobacillus Krishnamurthi et al. 2011

Assigned by: Krishnamurthi S, Ruckmani A, Pukall R, Chakrabarti T. Psychrobacillus gen. nov. and proposal for reclassification of Bacillus insolitus Larkin & Stokes, 1967, B. psychrotolerans Abd-El Rahman et al., 2002 and B. psychrodurans Abd-El Rahman et al., 2002 as Psychrobacillus insolitus comb. nov., Psychrobacillus psychrotolerans comb. nov. and Psychrobacillus psychrodurans comb. nov. Syst Appl Microbiol 2010; 33:367-373.

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Record number: 789110