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Spirochaetales

The Spirochaetales are an order of spirochete bacteria. Some species within this order are known to causes syphilis, Lyme disease, relapsing fever, and other illnesses.

Last revised
Jul 26, 2026
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≈ 2 min
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Spirochaetales
A microscopic photograph of fluorescent-stained Spirochaeta americana
Scientific classification Edit this classification
Domain: Bacteria
Kingdom: Pseudomonadati
Phylum: Spirochaetota
Class: Spirochaetia
Order: Spirochaetales
Buchanan 19171 (Approved Lists 1980)2
Families

See text

Synonyms
  • Borreliales Chuvochina et al. 2024
  • Sphaerochaetales Chuvochina et al. 2024
  • Treponematales Chuvochina et al. 2024
  • Winmispirales Podosokorskaya et al. 2025

The Spirochaetales are an order of spirochete bacteria. Some species within this order are known to causes syphilis, Lyme disease, relapsing fever, and other illnesses.3

Phylogeny

The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN) 4 and National Center for Biotechnology Information (NCBI).5

16S rRNA based LTP_10_2024678 120 marker proteins based GTDB 10-RS22691011
Spirochaetales

Sphaerochaetaceae

Rectinemataceae

Breznakiellaceae

Treponemataceae

Marispirochaetaceae

Sediminispirochaetaceae

Spirochaeta thermophila

Salinispiraceae

Spirochaetaceae

Alkalispirochaetaceae

Spirochaeta aurantia

"Thiospirochaetaceae"

"Entomospiraceae"

Borreliaceae

Borreliales

Borreliaceae

"SP‑2023"

"Ca. Haliotispira" {"SP-2023"}

"Entomospirales"

"Entomospiraceae"

Spirochaetales_E

"Thiospirochaetaceae"

Spirochaeta_F {DSM-2461}

Oceanispirochaeta Spirochaetaceae_B

DSM‑17781

Spirochaeta cellobiosiphila {DSM-17781}

Winmispirales

Winmispiraceae

"Salinispirales"

Alkalispirochaetaceae

Spirochaeta africana {DSM-8902}

Salinispiraceae

"Sediminispirochaetales"

Sediminispirochaetaceae

UBA9216

"Ca. Thalassospirochaeta" {UBA9216}

"Marispirochaetales"

Marispirochaetaceae

Sphaerochaetales

Sphaerochaetaceae

Treponematales

Rectinemataceae

Breznakiellaceae

Treponemataceae

See also

See also

References

References

  1. Buchanan RE. (1917). "Studies in the Nomenclature and Classification of the Bacteria: II. The Primary Subdivisions of the Schizomycetes". J Bacteriol. 2 (2): 155–164. doi:10.1128/jb.2.2.155-164.1917. PMC 378699. PMID 16558735.
  2. Skerman VB, McGowan V, Sneath PH (1980). "Approved lists of bacterial names". Int J Syst Bacteriol. 30: 225–420. doi:10.1099/00207713-30-1-225.
  3. Karami, Ali; Sarshar, Meysam; Ranjbar, Reza; Zanjani, Rahim Sorouri (19 October 2014). "The Phylum Spirochaetaceae". The Prokaryotes. pp. 915–929. doi:10.1007/978-3-642-38954-2_156. ISBN 978-3-642-38953-5.
  4. Spirochaetales in LPSN; Freese, H. M.; Meier-Kolthoff, J. P.; Sardà Carbasse, J.; Afolayan, A. O.; Göker, M. (29 October 2025). "TYGS and LPSN in 2025: a Global Core Biodata Resource for genome-based classification and nomenclature of prokaryotes within DSMZ Digital Diversity". Nucleic Acids Research. 53: D1–D12. doi:10.1093/nar/gkaf1110.
  5. Schoch CL; et al. "Spirochaetales". National Center for Biotechnology Information (NCBI) taxonomy database. Retrieved 2025-06-05.
  6. "The LTP". Retrieved 10 December 2024.
  7. "LTP_all tree in newick format". Retrieved 10 December 2024.
  8. "LTP_10_2024 Release Notes" (PDF). Retrieved 10 December 2024.
  9. "GTDB release 10-RS226". Genome Taxonomy Database. Retrieved 1 May 2025.
  10. "bac120_r226.sp_label". Genome Taxonomy Database. Retrieved 1 May 2025.
  11. "Taxon History". Genome Taxonomy Database. Retrieved 1 May 2025.