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Genus Azomonas

Warning: In the List of Prokaryotic names with Standing in Nomenclature, an arrow () only indicates the sequence of valid publication of names and does not mean that the last name in the sequence must be used (see: Introduction).

Number of species cited in this file: 3
Number of subspecies cited in this file: 0

Classification (Warning: see also the file "Classification of prokaryotes: Introduction").


For a detailed description of this taxon see Bergey’s Manual of Systematics of Archaea and Bacteria (BMSAB).


 

Azomonas Winogradsky 1938, genus.
Type species: ¤ Azomonas agilis (Beijerinck 1901) Winogradsky 1938 (Approved Lists 1980).
Synonym: "Azotococcus" Tchan 1953.
Etymology: N.L. n. azotum [from Fr. n. azote (from Gr. prep. a, not; Gr. n. zôê, life; N.Gr. n. azôê, not sustaining life)], nitrogen; N.L. pref. azo-, pertaining to nitrogen; L. fem. n. monas, a unit, monad; N.L. fem. n. Azomonas, nitrogen monad.
Approved Lists reference: SKERMAN (V.B.D.), McGOWAN (V.) and SNEATH (P.H.A.) (editors): Approved Lists of Bacterial Names. Int. J. Syst. Bacteriol., 1980, 30, 225-420 (Approved Lists of Bacterial Names in IJSEM Online - Approved Lists of Bacterial Names Amended edition).
Original 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.

Notes:
1 According to New and Tchan 1982, Azomonas Winogradsky 1938 (Approved Lists 1980) is an earlier heterotypic synonym of ¤ Azomonotrichon Thompson and Skerman 1981.
Reference: NEW (P.B.) and TCHAN (Y.T.): Azomonas macrocytogenes (ex Baillie, Hodgkiss, and Norris 1962, 118) nom. rev. Int. J. Syst. Bacteriol., 1982, 32, 381-382.
Original article in IJSEM Online
2 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.
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.
Reference: YOUNG (J.M.) and PARK (D.C.): Probable synonymy of the nitrogen-fixing genus Azotobacter and the genus Pseudomonas. Int. J. Syst. Evol. Microbiol., 2007, 57, 2894-2901.
Original article in IJSEM Online

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Azomonas agilis (Beijerinck 1901) Winogradsky 1938, species. (Type species of the genus.)
Type strain: (see also StrainInfo.net) ATCC 7494= DSM 375 = JCM 21502 = NBRC 102607.
Sequence accession no. (16S rRNA gene) for the type strain: AB175652.
Synonyms: "Azotobacter agile" (sic) Beijerinck 1901, "Azobacter agilis" Beijerinck 1901, "Azotococcus agilis" (Beijerinck 1901) Tchan 1953.
Etymology: L. fem. adj. agilis, quick, agile.
Approved Lists reference: SKERMAN (V.B.D.), McGOWAN (V.) and SNEATH (P.H.A.) (editors): Approved Lists of Bacterial Names. Int. J. Syst. Bacteriol., 1980, 30, 225-420 (Approved Lists of Bacterial Names in IJSEM Online - Approved Lists of Bacterial Names Amended edition).
Original publication: 1 BEIJERINCK (M.W.): Über oligonitrophile Mikroben. Zentralblatt für Bakteriologie, Parasitenkunde, Infektionskrankheiten und Hygiene. Abteilung II, 1901, 7, 561-582. 2 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.

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Azomonas insignis (Derx 1951) Jensen 1955, species.
Type strain: (see also StrainInfo.net) UQM 1966.
Sequence accession no. (16S rRNA gene) for the type strain: not found.
Synonyms: "Azotobacter insigne" (sic) Derx 1951, "Azomonas insignis" (Derx 1951) Baillie et al. 1962.
Etymology: L. fem. adj. insignis, distinguished by a mark, remarkable.
Approved Lists reference: SKERMAN (V.B.D.), McGOWAN (V.) and SNEATH (P.H.A.) (editors): Approved Lists of Bacterial Names. Int. J. Syst. Bacteriol., 1980, 30, 225-420 (Approved Lists of Bacterial Names in IJSEM Online - Approved Lists of Bacterial Names Amended edition).
Original publication: 1 DERX (H.G.): Azotobacter insigne nov. spec. fixateur d'azote à flagellation polaire. Proceedings Koninklijke Nederlandse Akademie van Wetenschappen Series C, 1951, 54, 342-350. 2 JENSEN (V.): The Azotobacter-flora of some Danish watercourses. Botanisk Tidsskrift, 1955, 52, 143-157.

Note: The type strain is not available in any known culture collection.
References: YARZA (P.): Personal communication (March 04, 2012).

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Azomonas macrocytogenes (Jensen 1955) New and Tchan 1982, comb. nov.
Type strain: (see also StrainInfo.net) O of Jensen = WR 111 = ATCC 12335= CIP 103928 = DSM 721 = LMG 1266 = NCAIM B.01790 = NCIB (now NCIMB) 8700.
Sequence accession no. (16S rRNA gene) for the type strain: AB175654.
Basonym: ¤ Azotobacter macrocytogenes Jensen 1955 (Approved Lists 1980).
Other synonyms: ¤ Azomonotrichon macrocytogenes (Jensen 1955) Thompson and Skerman 1981, "Beijerinckia macrocytogenes" (Jensen 1955) Rubenchik 1959, "Azomonas macrocytogenes" (Jensen 1955) Baillie et al. 1962.
Etymology: Gr. adj. makros, length, large; Gr. n. kutos, hollow, vessel, jar and, in biology, a cell; N.L. suff. -genes (from Gr. v. gennaô, to produce), producing; N.L. part. adj. macrocytogenes, large cell producing.
Valid publication: NEW (P.B.) and TCHAN (Y.T.): Azomonas macrocytogenes (ex Baillie, Hodgkiss, and Norris 1962, 118) nom. rev. Int. J. Syst. Bacteriol., 1982, 32, 381-382.
Original article in IJSEM Online

Note: New and Tchan 1982 propose Azomonas macrocytogenes as a nomen revictum, basonym: "Azomonas macrocytogenes" (Jensen 1955) Baillie et al. 1962.

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