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Species Corynebacterium flaccumfaciens

Classification: 

Bacteria Bacillati Actinomycetota Actinomycetes Mycobacteriales Corynebacteriaceae Corynebacterium Corynebacterium flaccumfaciens

Name: Corynebacterium flaccumfaciens (Hedges 1922) Dowson 1942 (Approved Lists 1980)

Category, proposed as: species, comb. nov.

Basonym: "Bacterium flaccumfaciens" Hedges 1922

Etymology: flac.cum.fa’ci.ens. L. masc. adj. flaccus, flabby; L. pres. part. faciens, making; N.L. neut. part. adj. flaccumfaciens, wilt-making [probably better: flaccifaciens]

Pronunciation (Latin), gender: ko-ry-ne-bak-TE-ri-um flak-kum-FA-ki-ens, neuter

Type strain: CECT 4211; CIP 107085; ICMP 2584; JCM 9670; LMG 3645; NCPPB 1446

Conduct genome-based taxonomy at tygs-logo

16S rRNA gene: AJ312209 Analysetree FASTA download

Effective publication: Dowson WJ. On the generic name of the gram-positive bacterial plant pathogens. Transactions of the British Mycological Society 1942; 25:311-314.

IJSEM list: Skerman VBD, McGowan V, Sneath PHA. Approved lists of bacterial names. Int J Syst Bacteriol 1980; 30:225-420.

Nomenclatural status: validly published under the ICNP

Taxonomic status: synonym (and not recommended for medical use)

Correct name: Curtobacterium flaccumfaciens (Hedges 1922) Collins and Jones 1984

Risk group: 2

  • Notes:
    • ⏰ According to Collins and Jones (1983), this species is an earlier heterotypic synonym of "Phytomonas poinsettiae" Starr and Pirone 1942. Publication: Collins MD, Jones D. Reclassification of Corynebacterium flaccumfaciens, Corynebacterium betae, Corynebacterium oortii and Corynebacterium poinsettiae in the genus Curtobacterium, as Curtobacterium flaccumfaciens comb. nov. J. Gen. Microbiol. 1983; 129:3545-3548. 🇬🇧
    • ⏰ According to Collins and Jones (1983), this species is an earlier heterotypic synonym of Corynebacterium betae Keyworth et al. 1956 (Approved Lists 1980). Publication: Collins MD, Jones D. Reclassification of Corynebacterium flaccumfaciens, Corynebacterium betae, Corynebacterium oortii and Corynebacterium poinsettiae in the genus Curtobacterium, as Curtobacterium flaccumfaciens comb. nov. J. Gen. Microbiol. 1983; 129:3545-3548. 🇬🇧
    • ⏰ According to Collins and Jones (1983), this species is an earlier heterotypic synonym of Corynebacterium oortii Saaltink and Maas Geesteranus 1969 (Approved Lists 1980). Publication: Collins MD, Jones D. Reclassification of Corynebacterium flaccumfaciens, Corynebacterium betae, Corynebacterium oortii and Corynebacterium poinsettiae in the genus Curtobacterium, as Curtobacterium flaccumfaciens comb. nov. J. Gen. Microbiol. 1983; 129:3545-3548. 🇬🇧
    • ⏰ According to Collins and Jones (1983), this species is an earlier heterotypic synonym of Corynebacterium poinsettiae (Starr and Pirone 1942) Burkholder 1948 (Approved Lists 1980). Publication: Collins MD, Jones D. Reclassification of Corynebacterium flaccumfaciens, Corynebacterium betae, Corynebacterium oortii and Corynebacterium poinsettiae in the genus Curtobacterium, as Curtobacterium flaccumfaciens comb. nov. J. Gen. Microbiol. 1983; 129:3545-3548. 🇬🇧
    • ⏰ According to Collins and Jones (1983), this species is an earlier heterotypic synonym of "Curtobacterium poinsettiae" (Starr and Pirone 1942) Osdaghi et al. 2024. Publication: Collins MD, Jones D. Reclassification of Corynebacterium flaccumfaciens, Corynebacterium betae, Corynebacterium oortii and Corynebacterium poinsettiae in the genus Curtobacterium, as Curtobacterium flaccumfaciens comb. nov. J. Gen. Microbiol. 1983; 129:3545-3548. 🇬🇧
    • ⏰ According to Committee (2025), this species is an earlier heterotypic synonym of Curtobacterium aurantiacum Osdaghi et al. 2025. Publication: Committee AH. Mitigating changes in prokaryotic nomenclature: Definitions and Workflow. Zenodo 2025; 2025:15320329.
    • 😩 Deposit incorrectly indicated in some sources as representing the type strain of this taxon: ATCC BAA-144.
    • ❗ Corynebacterium flaccumfaciens is the correct name instead if this species is regarded as a separate species (i.e., if its nomenclatural type is not assigned to another species whose name is validly published, legitimate and not rejected and has priority) within a separate genus Corynebacterium.
    • 😷 The risk group for Belgium has been imported on 2024-02-01. The full classification is: risk group = 1, note = "pv. oortii: 1 plant pathogen - biological class of risk plant: 2". — The risk group for Swiss Confederation has been imported on 2024-02-01. The full classification is: risk group = 2, note = "PP QUA". — The risk group for Germany has been imported on 2026-08-13. The full classification is: risk group = 1, note = "p2". — 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.
    • 🎓 Name mentioned 7 times in PubMed until 2026-06-11.
    • 🙅 This name is on the List of Recommended Names for bacteria of medical importance (LoRN) as a synonym of the name to be applied to this species. The name is on LoRN because of the recorded risk group of the species itself.
    • 🧍 Plant pathogenic according to Bull et al. (2007). Publication: Bull CT, De Boer SH, Denny TP, Firrao G, Fischer Le Saux M, Saddler GS, Scortichini M, Stead DE, Takikawa Y. Comprehensive list of names of plant pathogenic bacteria, 1980-2007. Journal of Plant Pathology 2010; 92:551-592. 🇺🇸

Subdivision:

Number of child taxa with a validly published and correct name: 0
Number of child taxa with a validly published name, including synonyms: 4
Total number of child taxa: 4

Parent taxon: Corynebacterium Lehmann and Neumann 1896 (Approved Lists 1980)

Assigned by: Dowson WJ. On the generic name of the gram-positive bacterial plant pathogens. Transactions of the British Mycological Society 1942; 25:311-314.

Linking: To permanently link to this page, use https://doi.org/10.83108/rn.775187Link copied to clipboard

Record number: 775187

  • Previous versions:
    • Version Date JSON
      1 2026-03-31 download

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