Name: Alkalihalobacillus halodurans (Nielsen et al. 1995 ex Boyer et al. 1973) Patel and Gupta 2020

Category: Species

Proposed as: comb. nov.

Basonym: Bacillus halodurans (ex Boyer et al. 1973) Nielsen et al. 1995

Etymology: ha.lo.du’rans. Gr. masc. n. hals (gen. halos), salt; L. pres. part. durans, enduring; N.L. masc. part. adj. halodurans, salt--enduring

Pronunciation (Latin), gender: … ha-lo-DU-rans, masculine

Type strain: ATCC 27557; CIP 105296; DSM 497; LMG 7121; NRRL B-3881; Strain PN-80

Conduct genome-based taxonomy at

16S rRNA gene: AJ302709 Analyse FASTA

Valid publication: Patel S, Gupta RS. A phylogenomic and comparative genomic framework for resolving the polyphyly of the genus Bacillus: Proposal for six new genera of Bacillus species, Peribacillus gen. nov., Cytobacillus gen. nov., Mesobacillus gen. nov., Neobacillus gen. nov., Metabacillus gen. nov. and Alkalihalobacillus gen. nov. Int J Syst Evol Microbiol 2020; 70:406-438. 🇨🇦

IJSEM list: Oren A, Garrity GM. Notification list. Notification that new names and new combinations have appeared in volume 70, part 1 of the IJSEM. Int J Syst Evol Microbiol 2020; 70:2167-2173.

Nomenclatural status: validly published under the ICNP

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

Correct name: Halalkalibacterium halodurans (Nielsen et al. 1995 ex Boyer et al. 1973) Joshi et al. 2022

• Synonyms:

  • Name	Kind
    Bacillus halodurans (ex Boyer et al. 1973) Nielsen et al. 1995	homotypic synonym, validly published under the ICNP
    Bacillus okuhidensis Li et al. 2002	heterotypic synonym, validly published under the ICNP
    "Bacillus alcalophilus subsp. halodurans" Boyer et al. 1973	homotypic synonym, not validly published, distinct rank
    Alkalihalobacillus okuhidensis (Li et al. 2002) Patel and Gupta 2020	heterotypic synonym, validly published under the ICNP
    Halalkalibacterium halodurans (Nielsen et al. 1995 ex Boyer et al. 1973) Joshi et al. 2022	homotypic synonym, validly published under the ICNP

• Notes:
  • ⏰ According to Joshi et al. (2021), this species is an earlier heterotypic synonym of Alkalihalobacillus okuhidensis (Li et al. 2002) Patel and Gupta 2020. Publication: Joshi A, Thite S, Karodi P, Joseph N, Lodha T. Alkalihalobacterium elongatum gen. nov. sp. nov.: An Antibiotic-Producing Bacterium Isolated From Lonar Lake and Reclassification of the Genus Alkalihalobacillus Into Seven Novel Genera. Front Microbiol 2021; 12:722369. 🇮🇳
  • ⏰ According to Joshi et al. (2021), this species is an earlier heterotypic synonym of Bacillus okuhidensis Li et al. 2002. Publication: Joshi A, Thite S, Karodi P, Joseph N, Lodha T. Alkalihalobacterium elongatum gen. nov. sp. nov.: An Antibiotic-Producing Bacterium Isolated From Lonar Lake and Reclassification of the Genus Alkalihalobacillus Into Seven Novel Genera. Front Microbiol 2021; 12:722369. 🇮🇳
  • 🏢 Synonymy of this taxon was mentioned in an IJSEM list. Publication: Oren A, Garrity GM. List of changes in taxonomic opinion no. 36. Notification of changes in taxonomic opinion previously published outside the IJSEM. Int J Syst Evol Microbiol 2022; 72:5413.
  • ❗ Alkalihalobacillus halodurans is the correct name instead if this species is regarded as a separate species (i.e., if its nomenclatural type is not assigned to another species whose name is validly published, legitimate and not rejected and has priority) within a separate genus Alkalihalobacillus.
  • 🎓 Name mentioned 3 times in PubMed until 2025-06-04.
  • 🙅 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.

Parent taxon: Alkalihalobacillus Patel and Gupta 2020

Assigned by: Patel S, Gupta RS. A phylogenomic and comparative genomic framework for resolving the polyphyly of the genus Bacillus: Proposal for six new genera of Bacillus species, Peribacillus gen. nov., Cytobacillus gen. nov., Mesobacillus gen. nov., Neobacillus gen. nov., Metabacillus gen. nov. and Alkalihalobacillus gen. nov. Int J Syst Evol Microbiol 2020; 70:406-438. 🇨🇦

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Record number: 7362