Bacillales, from Latin "bacillus", meaning "little staff, wand", are an order of Gram-positive bacteria, placed within the Bacillota.[1]  The Bacillales are the most productive order of the phylum Firmicutes.[2] Representative genera include Bacillus, Listeria and Staphylococcus.[3] 
 Phylogeny
 The currently accepted taxonomy based on the List of Prokaryotic names with Standing in Nomenclature (LPSN)[1] and the National Center for Biotechnology Information (NCBI).[4] 
    | 16S rRNA based LTP_10_2024[5][6][7] | 120 marker proteins based GTDB 09-RS220[8][9][10] | 
  |      | "Bacillia" s.s. |      |  |  |   |  |   |  |      |  |  |   |  |   |  |      |  |      |  | Novibacillaceae  |   |  |   |  |      |  |      | Caldalkalibacillales | Caldalkalibacillaceae  |   |  |  |   |  |   |  |      | "Caldibacillales" | Caldibacillaceae  |   |  |   | Calditerricolales | Calditerricolaceae  |   |  |  |   |  |  |   |  |  |   |  |   |  |      |  |      |  |      |  | Microaerobacter  |   |  |   |  |      | Desulfuribacillales | Desulfuribacillaceae  |   |  |   | Tepidibacillales | Tepidibacillaceae  |   |  |  |   |  |  |   |  |   |  |      |  | Oxalophagaceae [incl. "Ammoniphilaceae"]  |   |  |   |  |      | Aneurinibacillales | Aneurinibacillaeae  |   |  |   | Brevibacillales | Brevibacillaceae  |   |  |  |   |  |  |   |  |  |   |  |   |  |      |  | "Bacillus thermozeamaize"  |   |  |   |  |  |   |  |  |   |  |  |   |  |  |   |  |  |   |  |  |   |  |  |      | "Bacillia" s.s. |      |  |  |   |  |   |  |      |  |      |  |  |   |  |   |  |      | Tumebacillales |      |  |      |  | Collibacillus {BOQE01}  |   |  |   |  | Effusibacillaceae  |   |  |  |   |  |   |  | Tumebacillaceae  |   |  |  |   |  |   | Alicyclobacillales |  |   |  |  |   |  |  |   |  |   |  |      |  |      | Desulfuribacillales | Desulfuribacillaceae  |   |  |  |   |  |   |  |      |  |      |  |      | Calditerricolales | Calditerricolaceae  |   |  |  |   |  |   |  |      |  |      | Bacillales_F | "Bacillus thermozeamaize" {Bacillaceae_M}  |   |  |  |   |  |   |  |      | Thermicanales | Thermicanaceae  |   |  |   | "Brockiales" | "Brockiaceae"  |   |  |  |   |  |  |   |  |  |   |  |   |  |      |  |      | Thermoactinomycetales |      |  | Novibacillaceae  |   |  |   |  |      |  |      |  |      |  | "Polycladomycesaceae"  |   |  |   |  | "Planifilaceae"  |   |  |  |   |  |   |  | "Desmosporaceae"  |   |  |  |   |  |   |  |  |   |  |  |   |  |  |   |  |  |   |  |   |  |      |  |      | Paenibacillales |      |  | "Reconcilibacillaceae"  |   |  |   |  |      |  |      |  | "Xylanibacillaceae"  |   |  |   |  |      |  | Insulibacter {DA-C8}  |   |  |   |  | "Longirhabdaceae"  |   |  |  |   |  |  |   |  |   |  |  |   |  |  |   |  |  |   |  |  |   |  |   |  |      |  |      |  |  |   |  |   |  |      | Aneurinibacillales |      |  | "Ammoniphilaceae"  |   |  |   |  | Aneurinibacillaceae  |   |  |  |   |  |   | Brevibacillales | Brevibacillaceae  |   |  |  |   |  |  |   |  |   |  |      |  |      | Tepidibacillales | Tepidibacillaceae  |   |  |  |   |  |   |  |      |  |      | "Rubeoparvulales" | "Rubeoparvulaceae"  |   |  |  |   |  |   |  |      |  |  |   |  |   |  |      |  |      | Exiguobacteriales | Exiguobacteriaceae  |   |  |  |   |  |   |  |      |  |      | "Harrysmithimonadales" | "Harrysmithimonadaceae"  |   |  |  |   |  |   |  |      |  |      | "Bacillidae" |      |  |      | "Caldibacillales" |      |  |      |  | Bacillus_CG & BF {JC228}  |   |  |   |  | Caldibacillaceae  |   |  |  |   |  |   |  |      |  |      |  | Heyndrickxiaceae  |   |  |   |  |      |  |      |  | Bacillus smithii {DSM-4216}  |   |  |   |  |      |  | Oikeobacillus {DSM-23947}  |   |  |   |  | Domibacillaceae  |   |  |  |   |  |  |   |  |   |  |      |  | Falsibacillaceae  |   |  |   |  |      |  |      |  | Mangrovibacillus {R1DC41}  |   |  |   |  |  |   |  |  |   |  |   |  | Rossellomoreaceae  |   |  |  |   |  |  |   |  |  |   |  |  |   |  |   |  |  |   |  |  |   |  |  |   | Bacillales_B |  |   |  |   |  |      |  |      | Bacillales s.s. |      |  |  |   |  |   |  |      |  | Priestia {Bacillaceae_H}  |   |  |   |  |      |  |      |  | Bacillaceae_L  |   |  |   |  | Anoxybacillaceae  |   |  |  |   |  |   |  |      |  | Sutcliffiellaceae  |   |  |   |  |      |  |      |  | Bacillus carboniphilus {JAIVKR01}  |   |  |   |  | Aeribacillaceae  |   |  |  |   |  |   |  | Bacillaceae  |   |  |  |   |  |  |   |  |  |   |  |  |   |  |  |   |  |  |   |  |   |  |      |  |      | Bacillales_C |      |  | Bacillus solimangrovi {Bacillaceae_N}  |   |  |   |  | Schinkiaceae  |   |  |  |   |  |  |   |  |   |  |      |  |      |  |      |  |      | Bacillales_E |      |  | Lottiidibacillaceae  |   |  |   |  | "Massilibacteriaceae"  |   |  |  |   |  |  |   |  |   |  |      | Bacillales_K | Sporolactobacillaceae  |   |  |   | Bacillales_G |      |  |      |  | "Maribacillaceae"  |   |  |   |  | Pseudalkalibacillus species-group 2 {HB172195}  |   |  |  |   |  |   |  | Fictibacillaceae  |   |  |  |   |  |  |   |  |  |   |  |   |  |      | Bacillales_H |      |  |      |  | Marinococcaceae  |   |  |   |  | Salisediminibacteriaceae  |   |  |  |   |  |   |  |      |  | Anaerobacillaceae  |   |  |   |  |      |  | "Desertibacillaceae"  |   |  |   |  |      |  | Alkalihalobacterium {Bacillaceae_F}  |   |  |   |  | Bacillaceae_D  |   |  |  |   |  |  |   |  |  |   |  |  |   |  |  |   |  |  |   |  |   |  |      |  |      |  |      | Bacillales_I | Bacillus marinisedimentorum {Bacillaceae_O}  |   |  |   | DSM‑28697 | Aureibacillaceae  |   |  |  |   |  |   |  |  |   |  |  |   |  |  |   |  |  |   |  |  |   |  |  |   |  |  |   |  |  |   |  |   |  |  |   |  |  |   |  |  |   |  |  |   |  |  |   |  |  |   |  |  |   |  |  |   |  |  |   |  |  |   |  |  |   |  |  |   |  |  |   |  |  |   |  |  | 
 See also
  References
   - ^ a b J.P. Euzéby. "Bacillales". List of Prokaryotic names with Standing in Nomenclature (LPSN). Retrieved 2018-07-20. 
- ^ Harirchi, Sharareh; Sar, Taner; Ramezani, Mohaddaseh; Aliyu, Habibu; Etemadifar, Zahra; Nojoumi, Seyed Ali; Yazdian, Fatemeh; Awasthi, Mukesh Kumar; Taherzadeh, Mohammad J. (December 2022). "Bacillales: From Taxonomy to Biotechnological and Industrial Perspectives". Microorganisms. 10 (12): 2355. doi:10.3390/microorganisms10122355. ISSN 2076-2607. PMC 9781867. PMID 36557608. 
- ^ George M. Garrity; Vos, P.; Garrity, G.; Jones, D.; Krieg, N.R.; Ludwig, W.; Rainey, F.A.; Schleifer, K.-H.; Whitman, W.B. (September 15, 2009). The Firmicutes. Bergey's Manual of Systematic Bacteriology. Vol. 3 (2nd ed.). New York: Springer. p. 1450. ISBN 978-0-387-95041-9. British Library no. GBA561951. 
- ^ Sayers; et al. "Bacillales". National Center for Biotechnology Information (NCBI) taxonomy database. Retrieved 2018-07-20. 
- ^ "The LTP". Retrieved 10 December 2024. 
- ^ "LTP_all tree in newick format". Retrieved 10 December 2024. 
- ^ "LTP_10_2024 Release Notes" (PDF). Retrieved 10 December 2024. 
- ^ "GTDB release 09-RS220". Genome Taxonomy Database. Retrieved 10 May 2024. 
- ^ "bac120_r220.sp_labels". Genome Taxonomy Database. Retrieved 10 May 2024. 
- ^ "Taxon History". Genome Taxonomy Database. Retrieved 10 May 2024. 
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|  DomainArchaeaBacteriaEukaryota(major groupsMetamonadaDiscobaDiaphoretickes Hacrobia Cryptista
RhizariaAlveolataStramenopilesPlants
Amorphea AmoebozoaOpisthokonta AnimalsFungiMesomycetozoea)
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| Candidate Phyla Radiation
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| |  | |  |  | "Synergistetes" |  | 
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 |  | |  |  | "Cyanoprokaryota" |  Cyanobacteriota "Margulisiibacteriota" "Marinamargulisbacteria""Riflemargulisbacteria""Saganbacteria""Termititenacia"
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 | "Firmicutes" |  Bacillota Bacillota A "Clostridiia""Thermoanaerobacteria"Thermosediminibacteria
Bacillota D Bacillota E SulfobacilliaSymbiobacteriiaThermaerobacteria
Bacillota G "Hydrogenisporia"Limnochordia
"Desulfotomaculota" "Carboxydocellia""Carboxydothermia""Dehalobacteriia"DesulfitobacteriiaDesulfotomaculia"Moorellia"PeptococciaSyntrophomonadiaThermincolia
"Halanaerobiaeota" "Selenobacteria" 
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| Incertae sedis |  "Qinglongiota" "Salinosulfoleibacteria""Teskebacteria"
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| Taxon identifiers | 
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| Bacillales |  | 
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