Name: Rhodopseudomonas sphaeroides van Niel 1944 (Approved Lists 1980)

Category: Species

Proposed as: sp. nov.

Etymology: sphae.ro.i’des. Gr. fem. n. sphaîra, sphere, globe; L. adj. suff. -oides, ressembling, similar; from Gr. neut. adj. suff. -eides, resembling, similar; from Gr. neut. n. eîdos, that which is seen, form, shape, figure; N.L. adj. sphaeroides, spherical

Gender: feminine

Type strain: 2.4.1; ATCC 17023; ATH 2.4.1.; CCUG 31486; CECT 300; CIP 60.6; DSM 158; IFO 12203; JCM 6121; LMG 2827; NBRC 12203; Van Niel's ATH 2.4.1

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: X53853 Analyse FASTA

Effective publication: van Niel CB. THE CULTURE, GENERAL PHYSIOLOGY, MORPHOLOGY, AND CLASSIFICATION OF THE NON-SULFUR PURPLE AND BROWN BACTERIA. Bacteriol Rev 1944; 8:1-118.

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, conserved name

Taxonomic status: synonym

Correct name: Cereibacter sphaeroides (van Niel 1944) Hördt et al. 2020

Risk group: 1

• Synonyms:

  • Name	Kind
    Luteovulum sphaeroides (van Niel 1944) Suresh et al. 2020	homotypic synonym, validly published under the ICNP
    Cereibacter sphaeroides (van Niel 1944) Hördt et al. 2020	homotypic synonym, validly published under the ICNP
    Rhodobacter sphaeroides (van Niel 1944) Imhoff et al. 1984	homotypic synonym, validly published under the ICNP

• Notes:
  • ❗ Rhodopseudomonas sphaeroides 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 Rhodopseudomonas.
  • 😷 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 2023-10-29. The full classification is: risk group = 1.
  • 🎓 Name mentioned 474 times in PubMed until 2024-03-27.
  • 🧍 Conserved epithet (Judicial Opinion 43). Only conservation of an epithet, and over all earlier homotypic synonyms. Publication: Judicial Commission. Judicial Opinion No. 43. Int J Syst Bacteriol 1971; 21:108.

Parent taxon: Rhodopseudomonas Czurda and Maresch 1937 (Approved Lists 1980)

Assigned by: van Niel CB. THE CULTURE, GENERAL PHYSIOLOGY, MORPHOLOGY, AND CLASSIFICATION OF THE NON-SULFUR PURPLE AND BROWN BACTERIA. Bacteriol Rev 1944; 8:1-118.

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Record number: 780511