Caldicellulosiruptor

Caldicellulosiruptor
Scientific classification
Domain:	Bacteria
Kingdom:	Bacillati
Phylum:	Bacillota
Class:	Clostridia
Order:	Caldicellulosiruptorales Chuvochina et al. 2024
Family:	Caldicellulosiruptoraceae Chuvochina et al. 2024
Genus:	Caldicellulosiruptor Sissons et al. 1987 ex Rainey et al. 1995
Type species
Caldicellulosiruptor saccharolyticus Sissons et al. 1987 ex Rainey et al. 1995
Species
See text
Synonyms
"Anaerocellum" Svetlichnyi et al. 1990 "Caldocellum" Sissons et al. 1987

Caldicellulosiruptor is a genus of thermophilic, anaerobic, Gram-positive, non-spore forming bacteria. Originally placed within the highly polyphyletic class Clostridia according to the NCBI and LPSN, it is now thought to lie outside of the Bacillota. Caldicellulosiruptor is known to degrade and ferment complex carbohydrates from plant matter, such as cellulose and hemicellulose (hence its name), and certain species in the genus have been identified as potential candidates for biofuel production.

Phylogeny

The currently accepted taxonomy is based on the List of Prokaryotic names with Standing in Nomenclature (LPSN) ^[1] and National Center for Biotechnology Information (NCBI). ^[2]

16S rRNA based LTP_10_2024 [3] [4] [5]

120 marker proteins based GTDB 10-RS226 [6] [7] [8]

Caldicellulosiruptor C. changbaiensis C. saccharolyticus C. acetigenus C. kristjanssoniiBredholt et al. 1999 C. lactoaceticusMladenovska et al. 1997 C. bescii C. kronotskiensis C. hydrothermalis C. diazotrophicus C. owensensis

Caldicellulosiruptor C. changbaiensisBing et al. 2015 C. saccharolyticus Rainey et al. 1995 "C. morganii" Lee et al. 2018 "C. naganoensis" Lee et al. 2018 C. diazotrophicusChen et al. 2021 C. bescii Yang et al. 2010 C. kronotskiensisMiroshnichenko et al. 2008 C. hydrothermalisMiroshnichenko et al. 2008 "C. obsidiansis" Hamilton-Brehm et al. 2010 C. owensensisHuang et al. 1998 "C. danielii" Lee et al. 2018 C. acetigenus(Nielsen et al. 1994) Onyenwoke et al. 2006 Caldicellulosiruptor "Anaerocellum"

See also

• List of bacterial orders
• List of bacteria genera

References

1. Caldicellulosiruptor 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.
2. Schoch CL; et al. "Caldicellulosiruptor". National Center for Biotechnology Information (NCBI) taxonomy database. Retrieved 2025-06-05.
3. "The LTP" . Retrieved 10 December 2024.
4. "LTP_all tree in newick format" . Retrieved 10 December 2024.
5. "LTP_10_2024 Release Notes" (PDF). Retrieved 10 December 2024.
6. "GTDB release 10-RS226". Genome Taxonomy Database . Retrieved 1 May 2025.
7. "bac120_r226.sp_label". Genome Taxonomy Database . Retrieved 1 May 2025.
8. "Taxon History". Genome Taxonomy Database . Retrieved 1 May 2025.