Species Bacillus stearothermophilus

Name: Bacillus stearothermophilus Donk 1920 (Approved Lists 1980)

Category: Species

Proposed as: sp. nov.

Etymology: ste.a.ro.ther.mo’phi.lus. Gr. neut. n. stear, fat; Gr. fem. adj. thermê, heat; N.L. adj. philus -a -um, friend, loving; from Gr. adj. philos -ê -on, loving; N.L. masc. adj. stearothermophilus, (presumably intended to mean) heat- and fat-loving

Pronunciation, gender: ste-a-ro-t^her-MO-p^hi-lus, masculine

Type strain: ATCC 12980; BCRC 11092; BGSC 9A20; CCM 2062; CCRC 11092; CCUG 26241; CIP 66.23; DSM 22; IAM 11062; IFO 12550; JCM 2501; KCTC 1665; KCTC 1752; LMG 6939; NBIMCC 2282; NBRC 12550; NCCB 75019; NCDO 1768; NCFB 1768; NCIB 8923; NCIMB 8923; NCTC 10339; NRRL B-1172; VKM B-510

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AB021196 Analyse FASTA

Effective publication: Donk PJ. A Highly Resistant Thermophilic Organism. J Bacteriol 1920; 5:373-374.

IJSEM list: Skerman VBD, McGowan V, Sneath PHA. Approved lists of bacterial names. Int J Syst Bacteriol 1980; 30:225-420.

Nomenclatural status: validly published under the ICNP

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

Correct name: Geobacillus stearothermophilus (Donk 1920) Nazina et al. 2001

Risk group: 1

Synonyms:

Name	Kind
Geobacillus stearothermophilus (Donk 1920) Nazina et al. 2001	homotypic synonym, validly published under the ICNP

Notes:
- ❗ Bacillus stearothermophilus 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 Bacillus.
- 😷 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 Swiss Confederation has been imported on 2024-02-01. The full classification is: risk group = 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.
- 🎓 Name mentioned 2648 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: Bacillus Cohn 1872 (Approved Lists 1980)

Assigned by: Donk PJ. A Highly Resistant Thermophilic Organism. J Bacteriol 1920; 5:373-374.

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Record number: 773844

This LPSN page was printed on 2025-12-04 20:44:54

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Species Bacillus stearothermophilus