Name: Azomonas Winogradsky 1938 (Approved Lists 1980)

Category: Genus

Proposed as: gen. nov.

Etymology: A.zo.mo.nas. N.L. neut. n. azotum, nitrogen; from French masc. n. azote, nitrogen; from Gr. pref. a-, not (inseparable prefix); from Gr. fem. n. zôê, life; from N.Gr. fem. n. azôê, not sustaining life; N.L. pref. azo-, pertaining to nitrogen (in compound words condensed from azotum); L. fem. n. monas, a unit, monad; N.L. fem. n. Azomonas, nitrogen monad

Gender: feminine (stem: Azomonad-)

Type species: Azomonas agilis (Beijerinck 1901) Winogradsky 1938 (Approved Lists 1980)

Conduct genome-based taxonomy of genus at TYGS

16S rRNA gene: Analyse FASTA

Effective publication: Winogradsky S. Études sur la microbiologie du sol et des eaux. Sur la morphologie et l'écologie des Azotobacter. Annales de l'Institut Pasteur (Paris) 1938; 60:351-400.

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

• Synonyms:

  • Name	Kind
    Azomonotrichon Thompson and Skerman 1981	heterotypic synonym, validly published under the ICNP

• Emendations:
  • Rudra and Gupta 2024 Rudra B, Gupta RS. Phylogenomics studies and molecular markers reliably demarcate genus Pseudomonas sensu stricto and twelve other Pseudomonadaceae species clades representing novel and emended genera. Front Microbiol 2023; 14:1273665.
    Notes:
    • 🧍 As of 2024-03-10 this emendation was not yet included in an IJSEM List of Changes in Taxonomic Opinion.

• Notes:
  • 🚋 The type species of this genus has alternatively been placed in the genus Azotobacter Beijerinck 1901 (Approved Lists 1980). Publication: Beijerinck MW. Über oligonitrophile Mikroben. Centralblatt für Bakteriologie, Parasitenkunde, Infektionskrankheiten und Hygiene. Abteilung II 1901; 7:561-582.
  • 🙄 This taxon name is occasionally misprinted (or affected by an OCR error) in some sources as: "Anomonas"; "Azonionas".
  • 🎰 The BRCs most frequently used for deposits in this group are: ATCC: 2; DSM: 2; NBRC: 1; CIP: 1; NCIMB: 1; JCM: 1.
  • 🧍 Pittman et al. (1991) suggested the abbreviation "AZMN" for this genus name but this does not appear to be of practical relevance any longer. Publication: Pittman KF, Walczak CA, Lock CM. Codes and abbreviations for approved of effectively published names of genera of bacteria published from January 1980 to December 1990. Int J Syst Bacteriol 1991; 41:571-579.
  • 🧍 A consideration of the phenotypic determinative characteristics of the genera Azomonas Winogradsky 1938 (Approved Lists 1980) and Azotobacter Beijerinck 1901 (Approved Lists 1980) supports the synonymy of these genera as indicated by the sequence data. An investigation of these two genera, with a wider selection of strains, including the type species of Azomonas (Azomonas agilis), and perhaps based on other genes, might support their synonymy. If they are established as a single genus, Azotobacter would take priority over Azomonas. Publication: Young JM, Park DC. Probable synonymy of the nitrogen-fixing genus Azotobacter and the genus Pseudomonas. Int J Syst Evol Microbiol 2007; 57:2894-2901.
  • 🧍 At the molecular level, the similarity of Azotobacter species housekeeping gene and 16S rRNA gene sequences with those of Pseudomonas, especially Pseudomonas aeruginosa (the type species of the genus), point to an intimate relationship between these taxa. Publication: Beijerinck MW. Über oligonitrophile Mikroben. Zentralblatt für Bakteriologie, Parasitenkunde, Infektionskrankheiten und Hygiene. Abteilung II 1901; 7:561-582.

Subdivision:

Number of child taxa with a validly published and correct name: 3
Number of child taxa with a validly published name, including synonyms: 3
Total number of child taxa: 3

• Child taxa:

  • Name	Nomenclatural status	Taxonomic status
    Azomonas agilis (Beijerinck 1901) Winogradsky 1938 (Approved Lists 1980)	validly published under the ICNP	correct name
    Azomonas insignis (Derx 1951) Jensen 1955 (Approved Lists 1980)	validly published under the ICNP	correct name
    Azomonas macrocytogenes (Jensen 1955) New and Tchan 1982	validly published under the ICNP	correct name

Parent taxon: Pseudomonadaceae Winslow et al. 1917 (Approved Lists 1980)

Assigned by: Garrity GM, Bell JA, Lilburn TG. Taxonomic Outline of the Procaryotes. Bergey's Manual of Systematic Bacteriology, Second Edition, Release 4.0. Springer-Verlag, New York, 2003.

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Record number: 516971