Name: Microcystis aeruginosa (Kützing 1833) Otsuka et al. 2001

Category: Species

Proposed as: comb. nov.

Basonym: Sphaerothrombium aeruginosum Kützing 1833

Etymology: ae.ru.gi.no’sa. L. fem. adj. aeruginosa, full of copper rust, verdigris, hence green

Gender: feminine

Holotype: IAM M-247; NIES 843

Conduct genome-based taxonomy at

16S rRNA gene: AP009552 Analyse FASTA

Valid publication: Otsuka S, Suda S, Shibata S, Oyaizu H, Matsumoto S, Watanabe MM. A proposal for the unification of five species of the cyanobacterial genus Microcystis Kutzing ex Lemmermann 1907 under the rules of the Bacteriological Code. Int J Syst Evol Microbiol 2001; 51:873-879.

IJSEM list: Anonymous. Notification list. Notification that new names and new combinations have appeared in volume 51, part 3 of the IJSEM. Int J Syst Evol Microbiol 2001; 51:1231-1233.

Nomenclatural status: validly published under the ICN (Botanical Code), illegitimate name

Taxonomic status: synonym

Correct name: Microcystis aeruginosa (Kützing 1833) Lemmermann 1907

Risk group: 1

• Synonyms:

  • Name	Kind
    Sphaerothrombium aeruginosum Kützing 1833	homotypic synonym, inaccurate spelling (ICN [Botanical Code])
    Microcystis aeruginosa (Kützing 1833) Kützing 1849	homotypic synonym, validly published under the ICN (Botanical Code), illegitimate name
    Diplocystis aeruginosa (Kützing 1833) Trevisan 1848	homotypic synonym, validly published under the ICN (Botanical Code), rejected name
    Clathrocystis aeruginosa (Kützing 1833) Henfrey 1856	homotypic synonym, validly published under the ICN (Botanical Code), rejected name
    Polycystis aeruginosa (Kützing 1833) Kützing 1849	homotypic synonym, validly published under the ICN (Botanical Code), illegitimate name
    Microcystis aeruginosa (Kützing 1833) Lemmermann 1907	homotypic synonym, validly published under the ICN (Botanical Code), conserved name
    Micraloa aeruginosa corrig. Kützing 1833	homotypic synonym, validly published under the ICN (Botanical Code)

• Notes:
  • 😷 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". — 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 2570 times in PubMed until 2024-03-27.
  • 🧍 Illegitimate according to the Botanical Code, as Microcystis aeruginosa Otsuka et al. 2001 has been described as Microcystis aeruginosa (Kützing) Lemmermann 1907 and Microcystis aeruginosa (Kützing) Kützing 1846, formerly "Micraloa aeruginosa" Kützing 1833. Publication: McNeill J, Barrie FR, Buck WR, Demoulin V, Greuter W, Hawksworth DL, Herendeen PS, Knapp S, Marhold K, Prado J, et al. International Code of Nomenclature for Algae, Fungi and Plants (Melbourne Code). Koeltz Scientific Books, Königstein, 2012.
  • 🧍 In the paper by Otsuka et al. 2001, the strain NIES-843 is cited as NIES843. 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.
  • 🧍 Name validly published under the ICNafp although it appeared in a Notification List. Publication: Anonymous. Notification list. Notification that new names and new combinations have appeared in volume 51, part 3 of the IJSEM. Int J Syst Evol Microbiol 2001; 51:1231-1233.
  • 🧍 According to Rules 27(3) and 30, Microcystis aeruginosa Otsuka et al. 2001 is not validly published because, at the time of publication, the type strain was not deposited in two publicly accessible service collections in different countries. 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.
  • 🧍 According to the Judicial Opinion 81, authors or this name, or other scientists who wish to have this name validly published under the ICNP, should submit evidence of the deposit of the type strain in additional collections to the List Editor (either directly or via the IJSEM Editorial Office) before the next meeting of the Judicial Commission in Sapporo, Japan, in 2011. After that time, the name will be ruled not to have been validly published. If, after that deadline, the authors or other scientists wish to have this name validly published, this may be done by confirming that the name is in accordance with the requirements of the Code and either by requesting valid publication via the Validation Lists or by inclusion of the proposal in an original article in the IJSEM. The details of valid publication will then make reference to those publications. If authors or other scientists feel that an exception should be granted to Rule 30, requiring deposit of the type in two different collections in two different countries, they should contact the Editorial Office of the IJSEM. Publication: Judicial Commission. Judicial Opinion No. 81. Int J Syst Evol Microbiol 2008; 58:1755-1763.
  • 🧍 Microcystis aeruginosa Otsuka et al. 2001 is not validly published under the ICNP because the genus name Microcystis has never been validly published under the ICNP. — 🧍 Two other species, Microcystis flos-aquae (Wittrock) Kirchner 1898 and Microcystis pseudofilamentosa Crow 1923 are regarded as morphological variations of the unified Microcystis aeruginosa Otsuka et al. 2001. Publication: Lemmermann E. Algen I (Schizophyceen, Flagellaten, Peridineen). In: Anonymous NN (eds), Kryptogamenflora der Mark Brandenburg und angrenzender Gebiete herausgegeben von dem Botanischen Verein der Provinz Brandenburg. Dritter Band, Verlag von Gebrüder Borntraeger, Leipzig, 1907, p. 1-304.
  • 🧍 Otsuka et al. 2001 unify into Microcystis aeruginosa five species previously described under the Botanical Code: (i) Microcystis aeruginosa (Kützing) Lemmermann 1907; (ii) Microcystis ichthyoblabe Kützing 1843; (iii) Microcystis novacekii (Komárek) Compère 1974 (formerly "Diplocystis novacekii" Komárek 1958); (iv) Microcystis viridis (A. Braun) Lemmermann 1903 emend. Kondrateva 1975 [formerly "Polycystis viridis" (A. Braun in Rabenhorst 1862) Komárek 1958]; and (v) Microcystis wesenbergii (Komárek) Komárek in Kondrateva 1968 (formerly "Diplocystis wesenbergii" Komárek 1958). Publication: Komárek J. Die taxonomische Revision der planktischen Blaualgen der Tschechoslowakei. In: Komárek J, Ettl H (eds), Algologische Studien, Verlag der Tschechoslowakischen Akademie der Wissenschaften, Praha, 1958, p. 10-206.
  • 🧍 Under the Rules of the Bacteriological Code (1990 Revision) Microcystis aeruginosa Otsuka et al. 2001 is a new species not a new combination as cited in the paper by Otsuka et al. 2001. Publication: Lapage SP, Sneath PHA, Lessel EF, Skerman VBD, Seeliger HPR, Clark WA. International code of nomenclature of bacteria (1990 revision). American Society for Microbiology, Washington, 1992.

Parent taxon: Microcystis Kützing ex Lemmermann 1907

Assigned by: Otsuka S, Suda S, Shibata S, Oyaizu H, Matsumoto S, Watanabe MM. A proposal for the unification of five species of the cyanobacterial genus Microcystis Kutzing ex Lemmermann 1907 under the rules of the Bacteriological Code. Int J Syst Evol Microbiol 2001; 51:873-879.

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Record number: 794544