Name: Psychrobacillus Krishnamurthi et al. 2011

Category: Genus

Proposed as: gen. nov.

Etymology: Psy.chro.ba.cil’lus. Gr. masc. adj. psychros, cold; L. masc. n. bacillus, rod; N.L. masc. n. Psychrobacillus, cold loving rod

Gender, pronunciation (Latin): masculine (stem: Psychrobacill-), psy-k^hro-ba-KIL-lus

Type species: Psychrobacillus insolitus (Larkin and Stokes 1967) Krishnamurthi et al. 2011

Conduct genome-based taxonomy of genus at TYGS

16S rRNA gene: 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

• Notes:
  • 🧕 Krishnamurthi et al. (2010) assigned this genus to the family Bacillaceae Fischer 1895 (Approved Lists 1980). 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. 🇮🇳
  • 🚋 The type species of this genus has alternatively been placed in the genus Bacillus Cohn 1872 (Approved Lists 1980). Publication: Larkin JM, Stokes JL. Taxonomy of psychrophilic strains of Bacillus. J Bacteriol 1967; 94:889-895.
  • 🎰 The BRCs most frequently used for deposits in this group are: DSM: 5; CECT: 2; ATCC: 2; NCIMB: 2; CIP: 2; NBRC: 1; KEMB: 1; CGMCC: 1; NRRL: 1; KACC: 1.
  • 🧍 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. 🇫🇷

Subdivision:

Number of child taxa with a validly published and correct name: 9
Number of child taxa with a validly published name, including synonyms: 9
Total number of child taxa: 11

• Child taxa:

  • Name	Nomenclatural status	Taxonomic status
    Psychrobacillus antarcticus Da Silva et al. 2023	validly published under the ICNP	correct name
    "Psychrobacillus faecigallinarum" Gilroy et al. 2021	not validly published	preferred name
    Psychrobacillus glaciei Choi and Lee 2020	validly published under the ICNP	correct name
    Psychrobacillus insolitus (Larkin and Stokes 1967) Krishnamurthi et al. 2011	validly published under the ICNP	correct name
    Psychrobacillus lasiicapitis Shen et al. 2017	validly published under the ICNP	correct name
    Psychrobacillus mangrovi Liu et al. 2025	validly published under the ICNP	correct name
    Psychrobacillus psychrodurans (Abd El-Rahman et al. 2002) Krishnamurthi et al. 2011	validly published under the ICNP	correct name
    Psychrobacillus psychrotolerans (Abd El-Rahman et al. 2002) Krishnamurthi et al. 2011	validly published under the ICNP	correct name
    Psychrobacillus soli Pham et al. 2015	validly published under the ICNP	correct name
    "Psychrobacillus syltrankelensis" Romanenko et al. 2026	not validly published	preferred name
    Psychrobacillus vulpis Rodríguez et al. 2020	validly published under the ICNP	correct name

Parent taxon: Caryophanaceae Peshkoff 1939 (Approved Lists 1980)

Assigned by: Gupta RS, Patel S. Robust Demarcation of the Family Caryophanaceae (Planococcaceae) and Its Different Genera Including Three Novel Genera Based on Phylogenomics and Highly Specific Molecular Signatures. Front Microbiol 2019; 10:2821. 🇨🇦

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Record number: 518073