caldicellulosiruptor caldicellulosiruptor caldicellulosiruptor is a genus of thermophilic, anaerobic, gram-positive, non-spore forming bacteria. originally placed within the highly polyphyletic class clostridia, order thermoanaerobacterales and family thermoanaerobacterales family iii 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. caldicellulosiruptor scientific classification domain: bacteria phylum: bacillota class: clostridia order: thermoanaerobacterales family: syntrophomonadaceae genus: caldicellulosiruptorsissons et al. 1987 ex rainey et al. 1995 type species caldicellulosiruptor saccharolyticussissons et al. 1987 ex rainey et al. 1995 species c. acetigenus c. bescii c. changbaiensis "c. danielii" c. diazotrophicus c. hydrothermalis c. kristjanssonii c. kronotskiensis c. lactoaceticus "c. morganii" "c. naganoensis" "c. obsidiansis" c. owensensis c. saccharolyticus synonyms "anaerocellum" svetlichnyi et al. 1990 "caldocellum" sissons et al. 1987 phylogeny the currently accepted taxonomy is based on the list of prokaryotic names with standing in nomenclature (lpsn) and national center for biotechnology information (ncbi) 16s rrna based ltp_01_2022 120 marker proteins based gtdb 07-rs207 c. changbaiensis bing et al. 2015 c. saccharolyticus rainey et al. 1995 c. diazotrophicus chen et al. 2021 c. hydrothermalis miroshnichenko et al. 2008 c. bescii yang et al. 2010 c. kronotskiensis miroshnichenko et al. 2008 c. owensensis huang et al. 1998 c. acetigenus (nielsen et al. 1994) onyenwoke et al. 2006 c. kristjanssonii bredholt et al. 1999 c. lactoaceticus mladenovska et al. 1997 c. saccharolyticus "c. morganii" lee et al. 2018 "c. naganoensis" lee et al. 2018 "c. danielii" lee et al. 2018 c. acetigenus "c. obsidiansis" hamilton-brehm et al. 2010 c. owensensis c. hydrothermalis c. bescii c. kronotskiensis