Name: Breznakiella homolactica Song et al. 2022

Category: Species

Proposed as: sp. nov.

Etymology: ho.mo.lac’ti.ca. Gr. masc. adj. homoios, the same, similar; N.L. neut. n. acidum lacticum, lactic acid; N.L. fem. adj. homolactica, referring to a metabolic analogy to other bacteria with homolactic fermentation

Pronunciation (Latin), gender: brez-na-ki-EL-la ho-mo-LAK-ti-ka, feminine

Type strain: DSM 111054; JCM 39135; RmG30

Conduct genome-based taxonomy at

16S rRNA gene: MW396710 Analyse FASTA

Effective publication: Song Y, Herve V, Radek R, Pfeiffer F, Zheng H, Brune A. Characterization and phylogenomic analysis of Breznakiella homolactica gen. nov. sp. nov. indicate that termite gut treponemes evolved from non-acetogenic spirochetes in cockroaches. Environ Microbiol 2021; 23:4228-4245. 🇩🇪

IJSEM list: Oren A, Garrity GM. Validation list no. 203. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2022; 72:5167.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Notes:
  • 🥇 Nomenclatural type of the genus Breznakiella Song et al. 2022. Publication: Song Y, Herve V, Radek R, Pfeiffer F, Zheng H, Brune A. Characterization and phylogenomic analysis of Breznakiella homolactica gen. nov. sp. nov. indicate that termite gut treponemes evolved from non-acetogenic spirochetes in cockroaches. Environ Microbiol 2021; 23:4228-4245. 🇩🇪
  • 😷 The risk group for Germany has been imported on 2026-08-13. 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 2026-06-11.
  • 🧍 See also Tokuda (2021). Publication: Tokuda G. Origin of symbiotic gut spirochetes as key players in the nutrition of termites. Environ Microbiol 2021; 23:4092-4097. 🇯🇵

Parent taxon: Breznakiella Song et al. 2022

Assigned by: Song Y, Herve V, Radek R, Pfeiffer F, Zheng H, Brune A. Characterization and phylogenomic analysis of Breznakiella homolactica gen. nov. sp. nov. indicate that termite gut treponemes evolved from non-acetogenic spirochetes in cockroaches. Environ Microbiol 2021; 23:4228-4245. 🇩🇪

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Record number: 26583