Thermoanaerobacterales

Thermoanaerobacterales
Scientific classificationEdit this classification
Domain: Bacteria
Kingdom: Bacillati
Phylum: Bacillota
Class: Clostridia
Order: Thermoanaerobacterales
Wiegel 2010
Groups included
Cladistically included but traditionally excluded taxa
Synonyms
  • "Caldanaerobiales"

The Thermoanaerobacterales is a polyphyletic order of bacteria placed within the polyphyletic class Clostridia, and encompassing four families: the Thermoanaerobacteraceae, the Thermodesulfobiaceae, the Thermoanaerobacterales Family III. Incertae Sedis, and the Thermoanaerobacterales Family IV. Incertae Sedis, and various unplaced genera.[1]

This order is noted for the species' abilities to survive in extreme environments without oxygen and of relatively elevated temperatures for a living being (up to 80-90 °C). An example organism in this order is Thermoanaerobacter ethanolicus.[2]

Taxonomy

The Thermoanaerobacterales, as previously mentioned, is polyphyletic, and consists of numerous morphologically similar clades:

LPSN[3] and National Center for Biotechnology Information (NCBI).[1] 16S rRNA based LTP_10_2024[4] & 120 marker proteins based GTDB 09-RS220[5]

Phylogeny

16S rRNA based LTP_10_2024[4][6][7] 120 marker proteins based GTDB 10-RS226[5][8][9]

Koleobacterales

Caldicellulosiruptorales *
Caldicellulosiruptoraceae

Caldicellulosiruptor

"Caldanaerobiales" *
Caldanaerobiaceae

Caldanaerobius

Thermoanaerobacterium * [incl. Thermohydrogenium]

Desulfitibacterales *
Desulfitibacteraceae

Desulfitibacter

Desulfitisporales
Desulfitisporaceae

Desulfitispora

Calderihabitantales *
Calderihabitantaceae

Calderihabitans

Moorellales *
Moorellaceae

Moorella

Zhaonellaceae *

Zhaonella

Syntrophomonadales

Peptococcia

DSM‑12270 *
Thermacetogeniales
Thermacetogeniaceae
Syntrophomonadia

Syntrophomonadales

DSM‑16504 *
Desulfitibacterales
Desulfitibacteraceae

Desulfitibacter

KKC1 *
Calderihabitantales
Calderihabitantaceae

Calderihabitans

JADQBR01 *
JADQBR01
JADQBR01

"Metallumcola"

DULZ01 *
DULZ01
Zhaonellaceae

Zhaonella

"Moorellia" *
Neomoorellales
Neomoorellaceae

"Dehalobacteriia"

Desulfitobacteriia

"Carboxydocellia"

Carboxydocellales

Thermincolia

Thermincolales

"Carboxydothermia" *
Carboxydothermales
Carboxydothermaceae

Carboxydothermus

Desulfotomaculia
Ammonificales *
"Desulforudaceae"
Ammonificaceae

Desulfotomaculales

Note:

  • polyphyletic Thermoanaerobacterales

See also

References

  1. ^ a b Schoch CL; et al. "Thermoanaerobacterales". National Center for Biotechnology Information (NCBI) taxonomy database. Retrieved 2025-06-05.
  2. ^ C.Michael Hogan. 2010. Extremophile. eds. E.Monosson & C.Cleveland, Encyclopedia of Earth. National Council for Science and the Environment, Washington DC.
  3. ^ Thermoanaerobacterales 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.
  4. ^ a b "The LTP". Retrieved 10 December 2024.
  5. ^ a b "GTDB release 10-RS226". Genome Taxonomy Database. Retrieved 1 May 2025.
  6. ^ "LTP_all tree in newick format". Retrieved 10 December 2024.
  7. ^ "LTP_10_2024 Release Notes" (PDF). Retrieved 10 December 2024.
  8. ^ "bac120_r226.sp_label". Genome Taxonomy Database. Retrieved 1 May 2025.
  9. ^ "Taxon History". Genome Taxonomy Database. Retrieved 1 May 2025.