Name: Nitrobacter winogradskyi Winslow et al. 1917 (Approved Lists 1980)

Category: Species

Proposed as: sp. nov.

Etymology: wi.no.grad’sky.i. N.L. gen. masc. n. winogradskyi, of Winogradsky, named after Winogradsky, the microbiologist who first isolated these bacteria

Pronunciation, gender: wi-no-GRAD-sky-i, masculine

Type strain: ATCC 25391; CIP 104748; DSM 10237; Nb-255

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: CP000115 Analyse FASTA

Effective publication: Winslow CE, Broadhurst J, Buchanan RE, Krumwiede C, Rogers LA, Smith GH. The Families and Genera of the Bacteria: Preliminary Report of the Committee of the Society of American Bacteriologists on Characterization and Classification of Bacterial Types. J Bacteriol 1917; 2:505-566.

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

Taxonomic status: correct name

Risk group: 1

• Emendations:
  • Hördt et al. 2020 Hordt A, Lopez MG, Meier-Kolthoff JP, Schleuning M, Weinhold LM, Tindall BJ, Gronow S, Kyrpides NC, Woyke T, Goker M. Analysis of 1,000+ Type-Strain Genomes Substantially Improves Taxonomic Classification of Alphaproteobacteria. Front Microbiol 2020; 11:468. Oren A, Garrity GM. List of changes in taxonomic opinion no. 32. Notification of changes in taxonomic opinion previously published outside the IJSEM. Int J Syst Evol Microbiol 2020; 70:4061-4090.

• Notes:
  • 🥇 Nomenclatural type of the genus Nitrobacter Winogradsky 1892 (Approved Lists 1980). Publication: Winogradsky S. Contributions à la morphologie des organismes de la nitrification. Arkhiv Biologicheskikh Nauk (St. Petersbourg) 1892; 1:87-137.
  • 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 1, note = "Animal classification RG: 1 - Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No - Containment level: Containment Level 1". — 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. — 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 116 times in PubMed until 2025-06-04.

Parent taxon: Nitrobacter Winogradsky 1892 (Approved Lists 1980)

Assigned by: Winslow CE, Broadhurst J, Buchanan RE, Krumwiede C, Rogers LA, Smith GH. The Families and Genera of the Bacteria: Preliminary Report of the Committee of the Society of American Bacteriologists on Characterization and Classification of Bacterial Types. J Bacteriol 1917; 2:505-566.

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Record number: 778674