Name: Zoogloea ramigera Itzigsohn 1868 (Approved Lists 1980)

Category: Species

Proposed as: sp. nov.

Etymology: ra.mi’ge.ra. L. masc. n. ramus, a branch; N.L. masc. adj. suff. -gerus, bearing; from L. v. gero, to bear; N.L. fem. adj. ramigera, branch-bearing

Pronunciation (Latin), gender: … ra-MI-ge-ra, feminine

Type strain: ATCC 19544; CCUG 35504; CIP 107119; IAM 12136; IFO 15342; LMG 17136; NBRC 15342; NCTC 13030; NRRL B-3691

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: X74913 Analyse FASTA

Effective publication: Itzigsohn H. Entwicklungsvorgänge von Zoogloea, Oscillaria, Synedra, Staurastrum, Spirotaenia und Chroolepus. Sitzungs-Berichte der Gesellschaft naturforschender Freunde zu Berlin, 19 November 1867. Akademische Buchdruckerei in der Nicolai'schen Buchhandlung, Berlin, 1868.

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:
  • Dahal et al. 2020 Dahal RH, Chaudhary DK, Kim DU, Kim J. Zoogloea dura sp. nov., a N2-fixing bacterium isolated from forest soil and emendation of the genus Zoogloea and the species Zoogloea oryzae and Zoogloea ramigera. Int J Syst Evol Microbiol 2020; 70:5312-5318. 🇰🇷 Oren A, Garrity GM. Notification list. Notification that new names and new combinations have appeared in volume 70, part 10 of the IJSEM. Int J Syst Evol Microbiol 2021; 71:4565.

• Notes:
  • 🥇 Nomenclatural type of the genus Zoogloea Itzigsohn 1868 (Approved Lists 1980). Publication: Itzigsohn H. Entwicklungsvorgänge von Zoogloea, Oscillaria, Synedra, Staurastrum, Spirotaenia und Chroolepus. Sitzungs-Berichte der Gesellschaft naturforschender Freunde zu Berlin, 19 November 1867. Akademische Buchdruckerei in der Nicolai'schen Buchhandlung, Berlin, 1868.
  • 😷 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. — The risk group for Taiwan has been imported on 2024-11-03. The full classification is: risk group = 1, note = "P650 = v". — 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 87 times in PubMed until 2025-06-04.
  • 🧍 The strain ATCC 19623 = IAM 12669, previously designated as a reference strain of Zoogloea ramigera, is now the type strain of Crabtreella saccharophila Xie and Yokota 2006. Publication: Xie CH, Yokota A. Zoogloea oryzae sp. nov., a nitrogen-fixing bacterium isolated from rice paddy soil, and reclassification of the strain ATCC 19623 as Crabtreella saccharophila gen. nov., sp. nov. Int J Syst Evol Microbiol 2006; 56:619-624. 🇯🇵
  • 🧍 This name was subject to a Request for an Opinion. Publication: Unz RF. Neotype Strain of Zoogloea ramigera Itzigsohn: Request for an Opinion. International Journal of Systematic Bacteriology 1971; 21:91-99.

Parent taxon: Zoogloea Itzigsohn 1868 (Approved Lists 1980)

Assigned by: Itzigsohn H. Entwicklungsvorgänge von Zoogloea, Oscillaria, Synedra, Staurastrum, Spirotaenia und Chroolepus. Sitzungs-Berichte der Gesellschaft naturforschender Freunde zu Berlin, 19 November 1867. Akademische Buchdruckerei in der Nicolai'schen Buchhandlung, Berlin, 1868.

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Record number: 783212