Name: Erwinia carotovora subsp. betavasculorum Thomson et al. 1984

Category: Subspecies

Proposed as: subsp. nov.

Etymology: be.ta.vas.cu.lo.rum. Gr. neut. n. bêta, beet (indeclinable); L. neut. n. vasculum, a small vessel; N.L. gen. neut. pl. n. betavasculorum, of the beet' s vascular tissues [probably better: betivasculorum]

Gender: feminine

Type strain: ATCC 43762; CFBP 1539; CFBP 2122; CIP 105193; DSM 18076; ICMP 4226; LMG 2464; LMG 2466; NCPPB 2795

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: JN600328 Analyse FASTA

Effective publication: Thomson SV, Hildebrand DC, Schroth MN. Identification and nutritional differentiation of the erwinia sugar beet pathogen from members of Erwinia carotovora and Erwinia chrysanthemi. Phytopathology 1981; 71:1037-1042.

IJSEM list: Anonymous. Validation list no. 13. Validation of publication of new names and new combinations previously effectively published outside the IJSB. Int J Syst Bacteriol 1984; 34:91-92.

Nomenclatural status: validly published under the ICNP

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

Correct name: Pectobacterium betavasculorum (Thomson et al. 1984) Gardan et al. 2003

Risk group: 2

• Synonyms:

  • Name	Kind
    Pectobacterium betavasculorum (Thomson et al. 1984) Gardan et al. 2003	homotypic synonym, validly published under the ICNP, distinct rank
    Pectobacterium carotovorum subsp. betavasculorum (Thomson et al. 1984) Hauben et al. 1999	homotypic synonym, validly published under the ICNP

• Notes:
  • ❗ Erwinia carotovora subsp. betavasculorum is the correct name instead if this subspecies is regarded as a separate subspecies (i.e., if its nomenclatural type is not assigned to another subspecies whose name is validly published, legitimate and not rejected and has priority) within a separate species Erwinia carotovora within a separate genus Erwinia.
  • 😷 The risk group for Belgium has been imported on 2024-02-01. The full classification is: risk group = 1, note = "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". — The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 1, note = "p". — 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 on the List of Recommended Names for bacteria of medical importance (LoRN) as a synonym of the name to be applied to this subspecies. The name is on LoRN because of the recorded risk group of the species itself.

Parent taxon: Erwinia carotovora (Jones 1901) Bergey et al. 1923 (Approved Lists 1980)

Assigned by: Thomson SV, Hildebrand DC, Schroth MN. Identification and nutritional differentiation of the erwinia sugar beet pathogen from members of Erwinia carotovora and Erwinia chrysanthemi. Phytopathology 1981; 71:1037-1042.

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Record number: 783794