Name: Heliobacterium undosum Bryantseva et al. 2001

Category: Species

Proposed as: sp. nov.

Etymology: un.do’sum. L. neut. adj. undosum, curving

Gender: neuter

Type strain: BG 29; DSM 13378; UNIQEM 114

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AF249679 Analyse FASTA

Effective publication: Briantseva IA, Gorlenko VM, Turova TP, Kuznetsov BB, Lysenko AM, Bykova SA, Gal'chenko VF, Mitiushina LL, Osipov GA. [Heliobacterium sulfidophilum sp. Nov. and Heliobacterium undosum sp. Nov.: sulfide-oxidizing Heliobacteria from thermal sulfidic springs]. Mikrobiologiia 2000; 69:396-406.

IJSEM list: Anonymous. Validation list no. 78. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2001; 51:1-2.

Nomenclatural status: validly published under the ICNP

Taxonomic status: synonym

Correct name: Heliomicrobium undosum (Bryantseva et al. 2001) Kyndt et al. 2021

Risk group: 1

• Synonyms:

  • Name	Kind
    Heliomicrobium undosum (Bryantseva et al. 2001) Kyndt et al. 2021	homotypic synonym, validly published under the ICNP

• Notes:
  • ❗ Heliobacterium undosum 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 Heliobacterium.
  • 😷 The risk group for Swiss Confederation has been imported on 2024-02-01. The full classification is: risk group = 1. — The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 1.
  • 🎓 Name mentioned 2 times in PubMed until 2024-03-28.
  • 🧍 According to Rules 27(3) and 30, this name is not validly published because the effective publication only documents deposit of the type strain in a single recognized culture collection. However, according to the Judicial Opinion 81, Heliobacterium undosum Bryantseva et al. 2001 is to be considered to be validly published. Publication: Euzeby JP, Tindall BJ. Status of strains that contravene Rules 27(3) and 30 of the Bacteriological Code. Request for an opinion. Int J Syst Evol Microbiol 2004; 54:293-301.

Parent taxon: Heliobacterium Gest and Favinger 1985

Assigned by: Briantseva IA, Gorlenko VM, Turova TP, Kuznetsov BB, Lysenko AM, Bykova SA, Gal'chenko VF, Mitiushina LL, Osipov GA. [Heliobacterium sulfidophilum sp. Nov. and Heliobacterium undosum sp. Nov.: sulfide-oxidizing Heliobacteria from thermal sulfidic springs]. Mikrobiologiia 2000; 69:396-406.

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Record number: 776875