Species Bacillus thioparans

Name: Bacillus thioparans corrig. Pérez-Ibarra et al. 2007

Category: Species

Proposed as: sp. nov.

Etymology: thi.o’pa.rans. Gr. neut. n. theîon, sulfur; L. pres. part. parans, producing; N.L. masc. part. adj. thioparans, sulfur-producing

Pronunciation, gender: t^hi-O-pa-rans, masculine

Type strain: BM-B-436; BMP-1; CECT 7196; CIP 109765; IIBM-UNAM BM-B-436

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: DQ371431 Analyse FASTA

Effective publication: Perez-Ibarra BM, Flores ME, Garcia-Varela M. Isolation and characterization of Bacillus thioparus sp. nov., chemolithoautotrophic, thiosulfate-oxidizing bacterium. FEMS Microbiol Lett 2007; 271:289-296. 🇲🇽

IJSEM list: Euzeby JP. Validation list no. 117. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2007; 57:1933-1934.

Nomenclatural status: validly published under the ICNP

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

Correct name: Mesobacillus thioparans (Pérez-Ibarra et al. 2007) Patel and Gupta 2020

Risk group: 1

Synonyms:

Name	Kind
Mesobacillus thioparans (Pérez-Ibarra et al. 2007) Patel and Gupta 2020	homotypic synonym, validly published under the ICNP
Bacillus thioparus Pérez-Ibarra et al. 2007	other spelling of name, inaccurate spelling

Notes:
- ❗ Bacillus thioparans 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 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 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.
- 🧍 The specific epithet, thioparus (sic), has been corrected on validation according to Rule 61. Publication: Euzeby JP. Validation list no. 117. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2007; 57:1933-1934.

Parent taxon: Bacillus Cohn 1872 (Approved Lists 1980)

Assigned by: Perez-Ibarra BM, Flores ME, Garcia-Varela M. Isolation and characterization of Bacillus thioparus sp. nov., chemolithoautotrophic, thiosulfate-oxidizing bacterium. FEMS Microbiol Lett 2007; 271:289-296. 🇲🇽

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Record number: 786674

This LPSN page was printed on 2026-01-15 00:27:14

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Species Bacillus thioparans