Name: Alicyclobacillus tengchongensis Kim et al. 2016

Category: Species

Proposed as: sp. nov.

Etymology: teng.chong.en’sis. N.L. masc. adj. tengchongensis, of Tengchong, China, the source of the soil sample from which the type strain was isolated

Pronunciation (Latin), gender: a-li-ky-klo-ba-KIL-lus ten͡g-k^hon͡g-EN-sis, masculine

Type strain: ACK006; DSM 25924; KCTC 33022

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: KF772795 Analyse FASTA

Effective publication: Kim MG, Lee JC, Park DJ, Li WJ, Kim CJ. Alicyclobacillus tengchongensis sp. nov., a thermo-acidophilic bacterium isolated from hot spring soil. J Microbiol 2014; 52:884-889. 🇰🇷

IJSEM list: Oren A, Garrity GM. Validation list no. 170. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2016; 66:2463-2466.

Nomenclatural status: validly published under the ICNP

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

Correct name: Alicyclobacillus tolerans Karavaiko et al. 2005

Risk group: 1

• Synonyms:

  • Name	Kind
    Alicyclobacillus montanus López et al. 2018	heterotypic synonym, validly published under the ICNP
    "Paenalicyclobacillus tolerans" (Karavaiko et al. 2005) Sinninghe Damsté et al. 2025	heterotypic synonym, not validly published
    Alicyclobacillus tolerans Karavaiko et al. 2005	heterotypic synonym, validly published under the ICNP

• Notes:
  • ⏲ According to Sinninghe-Damste et al. (2025), this species is a later heterotypic synonym of Alicyclobacillus tolerans Karavaiko et al. 2005. Publication: Sinninghe Damste JS, Villanueva L, Pukall R. A chemotaxonomic and phylogenomic re-evaluation of the genus Alicyclobacillus: A proposal for reclassification of about half of the species into the new genus, Paenalicyclobacillus gen. nov., with an emended description of the genus Alicyclobacillus, and recognition that the names Alicyclobacillus tengchongensis and Alicyclobacillus montanus are later heterotypic synonyms of Alicyclobacillus tolerans. Syst Appl Microbiol 2025; 48:126651. 🇳🇱
  • ⏲ According to Sinninghe-Damste et al. (2025), this species is a later heterotypic synonym of "Paenalicyclobacillus tolerans" (Karavaiko et al. 2005) Sinninghe Damsté et al. 2025. Publication: Sinninghe Damste JS, Villanueva L, Pukall R. A chemotaxonomic and phylogenomic re-evaluation of the genus Alicyclobacillus: A proposal for reclassification of about half of the species into the new genus, Paenalicyclobacillus gen. nov., with an emended description of the genus Alicyclobacillus, and recognition that the names Alicyclobacillus tengchongensis and Alicyclobacillus montanus are later heterotypic synonyms of Alicyclobacillus tolerans. Syst Appl Microbiol 2025; 48:126651. 🇳🇱
  • 🏢 Synonymy of this taxon was mentioned in an IJSEM list. Publication: Oren A, Göker M. List of changes in taxonomic opinion no. 44. Notification of changes in taxonomic opinion previously published outside the IJSEM. Int J Syst Evol Microbiol 2026; 76:7140.
  • ❗ Alicyclobacillus tengchongensis 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 Alicyclobacillus.
  • 😷 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 7 times in PubMed until 2026-06-11.
  • 🙅 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 pathogenicity of other species in the genus.

Parent taxon: Alicyclobacillus Wisotzkey et al. 1992

Assigned by: Kim MG, Lee JC, Park DJ, Li WJ, Kim CJ. Alicyclobacillus tengchongensis sp. nov., a thermo-acidophilic bacterium isolated from hot spring soil. J Microbiol 2014; 52:884-889. 🇰🇷

Linking: To permanently link to this page, use https://doi.org/10.83108/rn.792241Copy to clipboardLink copied to clipboard

Record number: 792241

• Previous versions:

  • Version	Date	JSON
    1	2026-03-31