Name: Variovorax Willems et al. 1991

Category: Genus

Proposed as: gen. nov.

Etymology: Va.ri.o’vo.rax. L. masc. adj. varius, diverse, various; L. adj. vorax, voracious; N.L. masc. n. Variovorax, (bacteria) devouring a variety (of substrates)

Gender, pronunciation (Latin): masculine (stem: Variovorac-), wa-ri-O-wo-rax

Type species: Variovorax paradoxus (Davis 1969) Willems et al. 1991

Conduct genome-based taxonomy of genus at TYGS

16S rRNA gene: Analyse FASTA

Valid publication: Willems A, De Ley J, Gillis M, Kersters K. Comamonadaceae, a new family encompassing the acidovorans rRNA complex, including Variovorax paradoxus gen. nov., comb. nov., for Alcaligenes paradoxus (Davis 1969). Int. J. Syst. Bacteriol. 1991; 41:445-450. 🇧🇪

IJSEM list: Anonymous. Notification list. Notification that new names and new combinations have appeared in volume 41, part 2 of the IJSB. Int J Syst Bacteriol 1991; 41:581.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Notes:
  • 🚋 The type species of this genus has alternatively been placed in the genus Alcaligenes Castellani and Chalmers 1919 (Approved Lists 1980). Publication: Davis DH, Doudoroff M, Stanier RY, Mandel M. Proposal to reject the genus Hydrogenomonas: taxonomic implications. International Journal of Systematic Bacteriology 1969; 19:375-390.
  • 🙄 This taxon name is occasionally misprinted (or affected by an OCR error) in some sources as: "Varivorax".
  • 💁 Taxonomists who have recently focused on this group are the corresponding authors of Woo and Kim (2022), Kaempfer et al. (2025). Editors in search of reviewers are advised to consider additional criteria such as whether a taxon is covered by one of the ICSP subcommittees.
  • 🧬 The phylogenomic assignment score of this taxon is 0.03113 (N = 5).
  • 🎰 The BRCs most frequently used for deposits in this group are: CGMCC: 23; NBRC: 20; KACC: 15; DSM: 9; KCTC: 6; CIP: 5; LMG: 4; UCM: 3; JCM: 3; CECT: 2.
  • 😷 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.

Subdivision:

Number of child taxa with a validly published and correct name: 39
Number of child taxa with a validly published name, including synonyms: 39
Total number of child taxa: 41

• Child taxa:

  • Name	Nomenclatural status	Taxonomic status
    Variovorax arabinosiphilus Jiang et al. 2025	validly published under the ICNP	correct name
    Variovorax atrisoli Wang et al. 2025	validly published under the ICNP	correct name
    "Variovorax beijingensis" Gao et al. 2020	not validly published	preferred name
    Variovorax boronicumulans Miwa et al. 2008	validly published under the ICNP	correct name
    Variovorax brevis Jiang et al. 2025	validly published under the ICNP	correct name
    Variovorax cryoconiti Chen et al. 2026	validly published under the ICNP	correct name
    Variovorax davisae Jiang et al. 2025	validly published under the ICNP	correct name
    Variovorax defluvii Jin et al. 2012	validly published under the ICNP	correct name
    Variovorax dokdonensis Yoon et al. 2006	validly published under the ICNP	correct name
    Variovorax durovernensis Alcolea-Medina et al. 2023	validly published under the ICNP	correct name
    "Variovorax endophyticus" Cheng et al. 2025	not validly published	preferred name
    Variovorax flavidus Jiang et al. 2025	validly published under the ICNP	correct name
    Variovorax frigidus Chen et al. 2026	validly published under the ICNP	correct name
    Variovorax fucosicus Jiang et al. 2025	validly published under the ICNP	correct name
    Variovorax ginsengisoli Im et al. 2010	validly published under the ICNP	correct name
    Variovorax glacialis Chen et al. 2026	validly published under the ICNP	correct name
    Variovorax glucosi Chen et al. 2026	validly published under the ICNP	correct name
    Variovorax gossypii Kämpfer et al. 2015	validly published under the ICNP	correct name
    Variovorax gracilis Jiang et al. 2025	validly published under the ICNP	correct name
    Variovorax guangxiensis Gao et al. 2015	validly published under the ICNP	correct name
    Variovorax humicola Nguyen and Kim 2016	validly published under the ICNP	correct name
    Variovorax jilinensis Jiang et al. 2025	validly published under the ICNP	correct name
    Variovorax monticola Chen et al. 2026	validly published under the ICNP	correct name
    Variovorax multivorans Chen et al. 2026	validly published under the ICNP	correct name
    Variovorax nitratireducens Chen et al. 2026	validly published under the ICNP	correct name
    Variovorax nivicola Chen et al. 2026	validly published under the ICNP	correct name
    Variovorax palleresanus Comas et al. 2026	validly published under the ICNP	correct name
    Variovorax paradoxus (Davis 1969) Willems et al. 1991	validly published under the ICNP	correct name
    Variovorax pasteuri Chen et al. 2026	validly published under the ICNP	correct name
    Variovorax raffinosi Chen et al. 2026	validly published under the ICNP	correct name
    Variovorax restrictus Chen et al. 2026	validly published under the ICNP	correct name
    Variovorax rhizosphaerae Nguyen et al. 2018	validly published under the ICNP	correct name
    Variovorax robiniae Nguyen et al. 2018	validly published under the ICNP	correct name
    Variovorax saccharolyticus Jiang et al. 2025	validly published under the ICNP	correct name
    Variovorax soli Kim et al. 2006	validly published under the ICNP	correct name
    Variovorax stachyos Kämpfer et al. 2026	validly published under the ICNP	correct name
    Variovorax sucrosi Chen et al. 2026	validly published under the ICNP	correct name
    Variovorax terrae Woo and Kim 2026	validly published under the ICNP	correct name
    Variovorax trehalosi Chen et al. 2026	validly published under the ICNP	correct name
    Variovorax ureilyticus Nguyen et al. 2018	validly published under the ICNP	correct name
    Variovorax xiamenensis Wang et al. 2026	validly published under the ICNP	correct name

Parent taxon: Comamonadaceae Willems et al. 1991

Assigned by: Willems A, De Ley J, Gillis M, Kersters K. Comamonadaceae, a new family encompassing the acidovorans rRNA complex, including Variovorax paradoxus gen. nov., comb. nov., for Alcaligenes paradoxus (Davis 1969). Int. J. Syst. Bacteriol. 1991; 41:445-450. 🇧🇪

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Record number: 516892