Name: Holospora undulata (ex Hafkine 1890) Gromov and Ossipov 1981

Category: Species

Proposed as: sp. nov., nom. rev.

Etymology: un.du.la’ta. L. fem. adj. undulata, undulated, diversified as with waves

Pronunciation (Latin), gender: ho-LO-spo-ra un-du-LA-ta, feminine

Type strain: C204; clone M1-48 of Paramecium caudatum containing Holospora undulata in its micronuclei has been deposited in the culture collection of the Laboratory of Invertebrate Zoology, Biological Research Institute, Leningrad University; the type is the original description and illustration of Hafkine (Ann. Inst. Pasteur Paris, 1890, 4, 148-162.)

Valid publication: Gromov BV, Ossipov DV. Holospora (ex Hafkine 1890) nom. rev., a genus of bacteria inhabiting the nuclei of paramecia. Int. J. Syst. Bacteriol. 1981; 31:348-352.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Synonyms:

  • Name	Kind
    Holospora undulata (ex Hafkine 1890) Preer and Preer 1982	homotypic synonym, validly published under the ICNP, illegitimate name

• Emendations:
  • Wackerow-Kouzova and Myagkov 2021 Wackerow-Kouzova ND, Myagkov DV. Clarification of the Taxonomic Position of Paramecium caudatum Micronucleus Symbionts. Curr Microbiol 2021; 78:4098-4102. 🇷🇺
    Notes:
    • 🧍 As of 2022-11-28 this emendation was not yet included in an IJSEM List of Changes in Taxonomic Opinion.

• Notes:
  • 🥇 Nomenclatural type of the genus Holospora (ex Hafkine 1890) Gromov and Ossipov 1981. Publication: Gromov BV, Ossipov DV. Holospora (ex Hafkine 1890) nom. rev., a genus of bacteria inhabiting the nuclei of paramecia. Int. J. Syst. Bacteriol. 1981; 31:348-352.
  • 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 1, note = "Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No". — 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 2026-08-13. 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 28 times in PubMed until 2026-06-11.
  • 🧍 According to Yarza et al. (2013), an "orphan species with designated type strains that were either not deposited in culture collections or whose type strain is currently not available from a recognized culture collection". Publication: Yarza P, Sproer C, Swiderski J, Mrotzek N, Spring S, Tindall BJ, Gronow S, Pukall R, Klenk HP, Lang E, et al. Sequencing orphan species initiative (SOS): Filling the gaps in the 16S rRNA gene sequence database for all species with validly published names. Syst Appl Microbiol 2013; 36:69-73. 🇩🇪
  • 🧍 The type strain is currently not available from a recognized culture collection. Publication: Euzeby JP. List of Bacterial Names with Standing in Nomenclature: a folder available on the Internet. Int J Syst Bacteriol 1997; 47:590-592. 🇫🇷

Subdivision:

Number of child taxa with a validly published and correct name: 0
Number of child taxa with a validly published name, including synonyms: 0
Total number of child taxa: 2

• Child taxa:

  • Name	Nomenclatural status	Taxonomic status
    "Holospora undulata subsp. recta" Wackerow-Kouzova and Myagkov 2021	not validly published	preferred name
    "Holospora undulata subsp. undulata" (Gromov and Ossipov 1981 ex Hafkine 1890) Wackerow-Kouzova and Myagkov 2021	not validly published	preferred name

Parent taxon: Holospora (ex Hafkine 1890) Gromov and Ossipov 1981

Assigned by: Gromov BV, Ossipov DV. Holospora (ex Hafkine 1890) nom. rev., a genus of bacteria inhabiting the nuclei of paramecia. Int. J. Syst. Bacteriol. 1981; 31:348-352.

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Record number: 784021