Name: Pseudoclavibacter helvolus Manaia et al. 2004

Category: Species

Proposed as: sp. nov.

Etymology: hel’vo.lus. L. masc. adj. helvolus, pale yellow, yellowish

Pronunciation (Latin), gender: … HEL-wo-lus, masculine

Type strain: ATCC 13715; DSM 20419; IAM 14726; IFO 15775; JCM 9491; NBRC 15775; TISTR 1509

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: X77440 Analyse FASTA

Valid publication: Manaia CM, Nogales B, Weiss N, Nunes OC. Gulosibacter molinativorax gen. nov., sp. nov., a molinate-degrading bacterium, and classification of 'Brevibacterium helvolum' DSM 20419 as Pseudoclavibacter helvolus gen. nov., sp. nov. Int J Syst Evol Microbiol 2004; 54:783-789. 🇵🇹

IJSEM list: Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 54, part 3 of the IJSEM. Int J Syst Evol Microbiol 2004; 54:1427-1428.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name (and explicitly recommended for medical use)

Risk group: 1

• Synonyms:

  • Name	Kind
    Zimmermannella helvola Lin et al. 2004	homotypic synonym, validly published under the ICNP, illegitimate name

• Notes:
  • 🥇 Nomenclatural type of the genus Pseudoclavibacter Manaia et al. 2004. Publication: Manaia CM, Nogales B, Weiss N, Nunes OC. Gulosibacter molinativorax gen. nov., sp. nov., a molinate-degrading bacterium, and classification of 'Brevibacterium helvolum' DSM 20419 as Pseudoclavibacter helvolus gen. nov., sp. nov. Int J Syst Evol Microbiol 2004; 54:783-789. 🇵🇹
  • 😷 The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 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.
  • 🎓 Name mentioned 6 times in PubMed until 2025-06-04.
  • 🙆 This name is on the List of Recommended Names for bacteria of medical importance (LoRN) as the name to be applied to this species. The name is on LoRN because of the recorded pathogenicity of other species in the genus.
  • 🧍 Pseudoclavibacter helvolus Manaia et al. 2004 was previously known as "Brevibacterium helvolum" (Zimmermann 1890) Lochhead 1955. — Pseudoclavibacter helvolus Manaia et al. 2004 is an earlier homotypic synonym of the name Zimmermannella helvola Lin et al. 2004 (Rule 24a). Publication: Lin YC, Uemori K, de Briel DA, Arunpairojana V, Yokota A. Zimmermannella helvola gen. nov., sp. nov., Zimmermannella alba sp. nov., Zimmermannella bifida sp. nov., Zimmermannella faecalis sp. nov. and Leucobacter albus sp. nov., novel members of the family Microbacteriaceae. Int J Syst Evol Microbiol 2004; 54:1669-1676. 🇯🇵

Parent taxon: Pseudoclavibacter Manaia et al. 2004

Assigned by: Manaia CM, Nogales B, Weiss N, Nunes OC. Gulosibacter molinativorax gen. nov., sp. nov., a molinate-degrading bacterium, and classification of 'Brevibacterium helvolum' DSM 20419 as Pseudoclavibacter helvolus gen. nov., sp. nov. Int J Syst Evol Microbiol 2004; 54:783-789. 🇵🇹

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Record number: 779940