Name: "Bacillus alcalophilus subsp. halodurans" Boyer et al. 1973

Category: Subspecies

Proposed as: subsp. nov.

Etymology: ha.lo.du’rans. L. pres. part. durans, enduring; N.L. masc. part. adj. halodurans, salt-enduring

Pronunciation, gender: ha-lo-DU-rans, masculine

Nomenclatural type: 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

Original publication: Boyer EW, Ingle MB, Mercer GD. Bacillus alcalophilus subsp. halodurans subsp. nov.: An Alkaline-Amylase-Producing, Alkalophilic Organism. International Journal of Systematic Bacteriology 1973; 23:238-242.

Nomenclatural status: not validly published

Taxonomic status: synonym (and no standing)

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

Risk group: 1

• Synonyms:

  • Name	Kind
    Alkalihalobacillus halodurans (Nielsen et al. 1995 ex Boyer et al. 1973) Patel and Gupta 2020	homotypic synonym, validly published under the ICNP, distinct rank
    Bacillus halodurans (ex Boyer et al. 1973) Nielsen et al. 1995	homotypic synonym, validly published under the ICNP, distinct rank
    Bacillus okuhidensis Li et al. 2002	heterotypic synonym, validly published under the ICNP, distinct rank
    Halalkalibacterium halodurans (Nielsen et al. 1995 ex Boyer et al. 1973) Joshi et al. 2022	homotypic synonym, validly published under the ICNP, distinct rank
    Alkalihalobacillus okuhidensis (Li et al. 2002) Patel and Gupta 2020	heterotypic synonym, validly published under the ICNP, distinct rank

• Notes:
  • 🏢 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.
  • 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 1, note = "Animal classification RG: 1 - Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No - Containment level: Containment Level 1". — 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.
  • 🧍 See also Tindall (1988). Publication: Tindall B. Prokaryotic life in the alkaline, saline, athalassic environment. In: Rodriguez-Valera F (eds), Halophilic bacteria, 1st volume, CRC Press, Unknown City, 1988, p. 31-67.
  • 🧍 While the authors did not explicitly propose this taxon name, they did not provide a proper citation of the authority of the name either.

Parent taxon: Bacillus alcalophilus Vedder 1934 (Approved Lists 1980)

Assigned by: Boyer EW, Ingle MB, Mercer GD. Bacillus alcalophilus subsp. halodurans subsp. nov.: An Alkaline-Amylase-Producing, Alkalophilic Organism. International Journal of Systematic Bacteriology 1973; 23:238-242.

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Record number: 11187