Name: "Aerobacillus macerans" (Schardinger 1905) Donker 1926

Category: Species

Proposed as: comb. nov.

Basonym: Bacillus macerans Schardinger 1905 (Approved Lists 1980)

Etymology: ma’ce.rans. L. masc. part. adj. macerans, making soft

Gender: masculine

Nomenclatural type: ATCC 8244; BCRC 14680; CCM 2012; CCRC 14680; CCUG 7423; CFBP 4253; CIP 66.19; DSM 24; HAMBI 1958; HAMBI 636; IAM 12467; IFO 15307; JCM 2500; KCTC 1822; LMG 13281; LMG 6324; NBIMCC 2214; NBRC 15307; NCCB 48019; NCDO 1764; NCFB 1764; NCIB 9368; NCIMB 9368; NCTC 6355; NRRL B-172; NRRL B-394; NRRL B-4267; VKM B-506

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AB073196 Analyse FASTA

Original publication: Donker HJL. Bijdrage tot de kennis der boterzuur-butylalcohlen acetongistingen. W. D. Meinema, Delft, 1926.

Nomenclatural status: not validly published

Taxonomic status: synonym (and no standing)

Correct name: Paenibacillus macerans (Schardinger 1905) Ash et al. 1994

Risk group: 1

• Synonyms:

  • Name	Kind
    Paenibacillus thermophilus Zhou et al. 2013	heterotypic synonym, validly published under the ICNP
    Bacillus macerans Schardinger 1905 (Approved Lists 1980)	homotypic synonym, validly published under the ICNP
    Paenibacillus macerans (Schardinger 1905) Ash et al. 1994	homotypic synonym, validly published under the ICNP

• Notes:
  • ⏰ According to Kobayashi et al. (2019), this species is an earlier heterotypic synonym of Paenibacillus thermophilus Zhou et al. 2013. Publication: Kobayashi H, Tanizawa Y, Sakamoto M, Nakamura Y, Ohkuma M, Tohno M. Reclassification of Paenibacillus thermophilus Zhou et al. 2013 as a later heterotypic synonym of Paenibacillus macerans (Schardinger 1905) Ash et al. 1994. Int J Syst Evol Microbiol 2019; 69:417-421.
  • 🏢 Synonymy of this taxon was mentioned in an IJSEM list. Publication: Oren A, Garrity GM. Notification list. Notification that new names and new combinations have appeared in volume 69, part 2 of the IJSEM. Int J Syst Evol Microbiol 2019; 69:1251-1252.
  • 😷 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". — 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.

Parent taxon: "Aerobacillus" Donker 1926

Assigned by: Donker HJL. Bijdrage tot de kennis der boterzuur-butylalcohlen acetongistingen. W. D. Meinema, Delft, 1926.

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Record number: 2911