Name: Moorella Collins et al. 1994

Category: Genus

Proposed as: gen. nov.

Etymology: Moo.rel’la. N.L. fem. dim. n. Moorella, in honor of W.E.C. (Ed) Moore, an American bacteriologist, who worked with anaerobes

Gender, pronunciation (Latin): feminine (stem: Moorell-), moo-REL-la

Type species: Moorella thermoacetica (Fontaine et al. 1942) Collins et al. 1994

16S rRNA gene: Analyse FASTA

Valid publication: Collins MD, Lawson PA, Willems A, Cordoba JJ, Fernandez-Garayzabal J, Garcia P, Cai J, Hippe H, Farrow JA. The phylogeny of the genus Clostridium: proposal of five new genera and eleven new species combinations. Int J Syst Bacteriol 1994; 44:812-826. 🇬🇧

IJSEM list: Anonymous. Notification list. Notification that new names and new combinations have appeared in volume 44, part 4 of the IJSB. Int J Syst Bacteriol 1995; 45:199-200.

Nomenclatural status: validly published under the ICNP, illegitimate name

Taxonomic status: synonym

Correct name: Neomoorella Gtari and Ventura 2025

Risk group: 1

• Synonyms:

  • Name	Kind
    Neomoorella Gtari and Ventura 2025	homotypic synonym, validly published under the ICNP

• Notes:
  • 🥇 Nomenclatural type of the class "Moorellia" Sorokin et al. 2020. Publication: Sorokin DY, Merkel AY, Abin CA, Hollibaugh JT. Desulfuribacillia class. nov. In: Whitman WB (eds), Bergey's Manual of Systematics of Archaea and Bacteria, John Wiley & Sons, New York, 2020, p. 1-2. 🇳🇱
  • 🥇 Nomenclatural type of the family Moorellaceae Lv et al. 2020. Publication: Lv XM, Yang M, Dai LR, Tu B, Chang C, Huang Y, Deng Y, Lawson PA, Zhang H, Cheng L, et al. Zhaonella formicivorans gen. nov., sp. nov., an anaerobic formate-utilizing bacterium isolated from Shengli oilfield, and proposal of four novel families and Moorellales ord. nov. in the phylum Firmicutes. Int J Syst Evol Microbiol 2020; 70:3361-3373. 🇨🇳
  • 🥇 Nomenclatural type of the order Moorellales Lv et al. 2020. Publication: Lv XM, Yang M, Dai LR, Tu B, Chang C, Huang Y, Deng Y, Lawson PA, Zhang H, Cheng L, et al. Zhaonella formicivorans gen. nov., sp. nov., an anaerobic formate-utilizing bacterium isolated from Shengli oilfield, and proposal of four novel families and Moorellales ord. nov. in the phylum Firmicutes. Int J Syst Evol Microbiol 2020; 70:3361-3373. 🇨🇳
  • 🧕 Boone et al. (2001) assigned this genus to the family "Thermoanaerobacteriaceae". Publication: Garrity GM, Holt JG. The Road Map to the Manual. In: Boone DR, Castenholz RW, Garrity GM (eds), Bergey's Manual of Systematic Bacteriology, second edition, vol. 1 (The Archaea and the deeply branching and phototrophic Bacteria), Springer-Verlag, New York, 2001, p. 119-166. 🇺🇸
  • 🧕 De Vos et al. (2009) assigned this genus to the family Thermoanaerobacteraceae Wiegel 2010. Publication: Wiegel J. Family I. Thermoanaerobacteraceae fam. nov. In: De Vos P, Garrity GM, Jones D, Krieg NR, Ludwig W, Rainey FA, K.-H. S, Whitman WB (eds), Bergey's Manual of Systematic Bacteriology, 2nd edn, vol. 3 (The Firmicutes), Springer, New York, 2009, p. 1225. 🇧🇪
  • 🧕 Lv et al. (2020) assigned this genus to the family Moorellaceae Lv et al. 2020. Publication: Lv XM, Yang M, Dai LR, Tu B, Chang C, Huang Y, Deng Y, Lawson PA, Zhang H, Cheng L, et al. Zhaonella formicivorans gen. nov., sp. nov., an anaerobic formate-utilizing bacterium isolated from Shengli oilfield, and proposal of four novel families and Moorellales ord. nov. in the phylum Firmicutes. Int J Syst Evol Microbiol 2020; 70:3361-3373. 🇨🇳
  • 🧕 Lv et al. (2020) assigned this genus to the order Moorellales Lv et al. 2020. Publication: Lv XM, Yang M, Dai LR, Tu B, Chang C, Huang Y, Deng Y, Lawson PA, Zhang H, Cheng L, et al. Zhaonella formicivorans gen. nov., sp. nov., an anaerobic formate-utilizing bacterium isolated from Shengli oilfield, and proposal of four novel families and Moorellales ord. nov. in the phylum Firmicutes. Int J Syst Evol Microbiol 2020; 70:3361-3373. 🇨🇳
  • 🚂 For the type species of this genus another name is in use, which is affiliated with the genus Neomoorella Gtari and Ventura 2025. Publication: Gtari M, Ventura S. Proposal of Neomoorella gen. nov. as a replacement name for the illegitimate prokaryotic genus name Moorella Collins et al. 1994. Int J Syst Evol Microbiol 2025; 75:6779. 🇹🇳
  • 🙄 This taxon name is occasionally misprinted (or affected by an OCR error) in some sources as: "Moorrella".
  • 🎰 The BRCs most frequently used for deposits in this group are: DSM: 10; ATCC: 5; JCM: 3; VKM: 3; CGMCC: 1; CCOS: 1.
  • 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 1, note = "Animal classification RG: 1 - Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No - Containment level: Containment Level 1". — If in doubt, use the risk group given in the regulations for your country and, if these are not available, use the risk group given in the catalogue of the culture collection from which you have obtained or intend to obtain the strain.
  • 💥 This name is a homonym of Moorella N.N. (botanical); Moorella Cameron, 1913 (zoological) [from Catalogue of Life].
  • 🧍 According to Shipunov (2011), this name is a hemihomonym. Publication: Shipunov A. The problem of hemihomonyms and the on-line hemihomonyms database (HHDB). Bionomina 2011; 4:65-72.
  • 🧍 Later homonym of the name of a fungus. Moorella Collins et al. 1994 is a later homonym of a genus name with standing in the botanical (fungal) nomenclature: Moorella P. Rag. Rao and D. Rao 1964. Moorella Collins et al. 1994 is also a later homonym of a genus name with standing in the zoological (animal) nomenclature: Moorella Cameron, 1913. Principle 2 of the 2008 Code is not retroactive, so the name does not contravene the Code because of this homonymy. — Crook M. Personal communication, 2021-08-19.

Subdivision:

Number of child taxa with a validly published and correct name: 0
Number of child taxa with a validly published name, including synonyms: 9
Total number of child taxa: 10

• Child taxa:

  • Name	Nomenclatural status	Taxonomic status
    Moorella caeni Santaella et al. 2023	validly published under the ICNP, illegitimate name	synonym
    Moorella carbonis Böer et al. 2025	validly published under the ICNP, illegitimate name	synonym
    Moorella glycerini Slobodkin et al. 1997	validly published under the ICNP, illegitimate name	synonym
    Moorella humiferrea Nepomnyashchaya et al. 2012	validly published under the ICNP, illegitimate name	synonym
    Moorella mulderi Balk et al. 2005	validly published under the ICNP, illegitimate name	synonym
    "Moorella perchloratireducens" Balk et al. 2008	not validly published	preferred name
    Moorella stamsii Alves et al. 2013	validly published under the ICNP, illegitimate name	synonym
    Moorella sulfitireducens Slobodkina et al. 2023	validly published under the ICNP, illegitimate name	synonym
    Moorella thermoacetica (Fontaine et al. 1942) Collins et al. 1994	validly published under the ICNP, illegitimate name	synonym
    Moorella thermoautotrophica (Wiegel et al. 1982) Collins et al. 1994	validly published under the ICNP, rejected name	synonym

Parent taxon: Neomoorellaceae Gtari and Ventura 2025

Assigned by: Freese HM, Meier-Kolthoff JP, Sarda Carbasse J, Afolayan AO, Goker M. TYGS and LPSN in 2025: a Global Core Biodata Resource for genome-based classification and nomenclature of prokaryotes within DSMZ Digital Diversity. Nucleic Acids Res 2026; 54:D884-D891. 🇩🇪

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Record number: 517086