Name: Actinomycetes Krassilnikov 1949 (Approved Lists 1980)

Category: Class

Proposed as: class. nov.

Etymology: N.L. masc. n. Actinomyces, type genus of the type order of the class; N.L. masc. pl. n. Actinomycetes, the Actinomycetales class (nominative plural of Actinomyces)

Gender: masculine

Type order: Actinomycetales Buchanan 1917 (Approved Lists 1980)

Effective publication: Krassilnikov NA. Opredelitelv Bakterii i Actinomicetov. Akademii Nauk SSSR, Moscow, 1949.

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
    Arabobacteria Cavalier-Smith 2002	heterotypic synonym, validly published under the ICNP, rejected name
    Streptomycetes Cavalier-Smith 2002	heterotypic synonym, validly published under the ICNP, rejected name
    Actinobacteria Stackebrandt et al. 1997	homotypic synonym, validly published under the ICNP, illegitimate name
    Actinomycetia Salam et al. 2020	homotypic synonym, validly published under the ICNP, illegitimate name
    Arthrobacteria Cavalier-Smith 2002	homotypic synonym, validly published under the ICNP, rejected name

• Notes:
  • Goodfellow and Williams (1983) assigned the uncategorized "Maduromycetes" Goodfellow and Williams 1983 to this class. Publication: Goodfellow M, Williams ST. Ecology of Actinomycetes. Ann. Rev. Microbiol. 1983; 37:189-216.
  • Goodfellow and Williams (1983) assigned the uncategorized "Actinoplanetes" Goodfellow and Williams 1983 to this class. Publication: Goodfellow M, Williams ST. Ecology of Actinomycetes. Ann. Rev. Microbiol. 1983; 37:189-216.
  • Goodfellow and Williams (1983) assigned the uncategorized "Actinobacteria" Goodfellow and Williams 1983 to this class. Publication: Goodfellow M, Williams ST. Ecology of Actinomycetes. Ann. Rev. Microbiol. 1983; 37:189-216.
  • Goodfellow and Williams (1983) assigned the uncategorized "Micropolysporas" Goodfellow and Williams 1983 to this class. Publication: Goodfellow M, Williams ST. Ecology of Actinomycetes. Ann. Rev. Microbiol. 1983; 37:189-216.
  • Goodfellow and Williams (1983) assigned the uncategorized "Multilocular" Goodfellow and Williams 1983 to this class. Publication: Goodfellow M, Williams ST. Ecology of Actinomycetes. Ann. Rev. Microbiol. 1983; 37:189-216.
  • Goodfellow and Williams (1983) assigned the uncategorized "Nocardioform" Goodfellow and Williams 1983 to this class. Publication: Goodfellow M, Williams ST. Ecology of Actinomycetes. Ann. Rev. Microbiol. 1983; 37:189-216.
  • Goodfellow and Williams (1983) assigned the uncategorized "Streptomycetes" Goodfellow and Williams 1983 to this class. Publication: Goodfellow M, Williams ST. Ecology of Actinomycetes. Ann. Rev. Microbiol. 1983; 37:189-216.
  • Goodfellow and Williams (1983) assigned the uncategorized "Thermomonosporas" Goodfellow and Williams 1983 to this class. Publication: Goodfellow M, Williams ST. Ecology of Actinomycetes. Ann. Rev. Microbiol. 1983; 37:189-216.
  • The type order of this class has alternatively been placed in the class Schizomycetes Nägeli 1857 (Approved Lists 1980). Publication: Winslow CE, Broadhurst J, Buchanan RE, Krumwiede C, Rogers LA, Smith GH. The Families and Genera of the Bacteria: Final Report of the Committee of the Society of American Bacteriologists on Characterization and Classification of Bacterial Types. J Bacteriol 1920; 5:191-229.
  • The type order of this class has alternatively been placed in the class Actinobacteria Stackebrandt et al. 1997. Publication: Nouioui I, Carro L, Garcia-Lopez M, Meier-Kolthoff JP, Woyke T, Kyrpides NC, Pukall R, Klenk HP, Goodfellow M, Goker M. Genome-Based Taxonomic Classification of the Phylum Actinobacteria. Front Microbiol 2018; 9:2007.
  • This taxon name is occasionally misprinted in some sources as: "Acinomycetes"; "Aclinomycetes"; "Acrinomycete"; "Acrinomycetes"; "Actillomycetes"; "Actimmycetes"; "Actinimycetes"; "Actinomvicetes"; "Actinomycetalis"; "Actinomycetea"; "Actinomycetos"; "Actinomyetes"; "Actinomyicetes"; "Actinomyoetes"; "Actinomyretes"; "Actinomytcetes"; "Actinoniycetes"; "Actinoycetes"; "Actionmycetes"; "Actiuomycetes"; "Actmomycetes"; "Antinomycetes"; "Ctinomycetes"; "Rctinomycetes".
  • This taxon name is occasionally used in singular form as: "Actinomycete".
  • The BRCs most frequently used for deposits in this group are: DSM: 4722; JCM: 3738; NBRC: 2465; ATCC: 2138; NRRL: 2066; IFO: 1663; KCTC: 1190; VKM: 1120; CIP: 1037; CGMCC: 991.
  • According to Tindall (2014) the type order is Actinomycetales Buchanan 1917. Publication: Tindall BJ. Names at the rank of class, subclass and order, their typification and current status: Supplementary information to Opinion 79. Judicial Commission of the International Committee on Systematics of Prokaryotes. Int J Syst Evol Microbiol 2014; 64:3599-3602.
  • See also Kuester (1959). Publication: Küster E. Outline of a Comparative Study of Criteria Used in Characterization of the Actinomycetes. International Bulletin of Bacteriological Nomenclature and Taxonomy 1959; 9:97-104.
  • This name was mentioned in a Request for an Opinion. Publication: Oren A, Parte A, Garrity GM. Implementation of Rule 8 of the International Code of Nomenclature of Prokaryotes for the renaming of classes. Request for an Opinion. Int J Syst Evol Microbiol 2016; 66:4296-4298.
  • Rule 22 indicates that the type of a taxon higher than order may be later designated by an Opinion of the Judicial Commission. Publication: Euzeby JP, Tindall BJ. Nomenclatural type of orders: corrections necessary according to Rules 15 and 21a of the Bacteriological Code (1990 Revision), and designation of appropriate nomenclatural types of classes and subclasses. Request for an opinion. Int J Syst Evol Microbiol 2001; 51:725-727.
  • The class Actinomycetes was originally proposed without the designation of a nomenclatural type, thus contravening Rules 15, 22 and 27(3). Publication: Euzeby JP, Tindall BJ. Nomenclatural type of orders: corrections necessary according to Rules 15 and 21a of the Bacteriological Code (1990 Revision), and designation of appropriate nomenclatural types of classes and subclasses. Request for an opinion. Int J Syst Evol Microbiol 2001; 51:725-727.

Subdivision:

Number of child taxa with a validly published and correct name: 19
Number of child taxa with a validly published name, including synonyms: 20
Total number of child taxa: 20

• Child taxa:

  • Name	Nomenclatural status	Taxonomic status
    Acidothermales Sen et al. 2014	validly published under the ICNP	correct name
    Actinomycetales Buchanan 1917 (Approved Lists 1980)	validly published under the ICNP	correct name
    Bifidobacteriales Stackebrandt et al. 1997	validly published under the ICNP	correct name
    Catenulisporales Donadio et al. 2015	validly published under the ICNP	correct name
    Cryptosporangiales Nouioui et al. 2018	validly published under the ICNP	correct name
    Frankiales Sen et al. 2014	validly published under the ICNP	correct name
    Geodermatophilales Sen et al. 2014	validly published under the ICNP	correct name
    Glycomycetales Labeda 2015	validly published under the ICNP	correct name
    Jatrophihabitantales Salam et al. 2020	validly published under the ICNP	correct name
    Jiangellales Tang et al. 2015	validly published under the ICNP	correct name
    Kineosporiales Kämpfer 2015	validly published under the ICNP	correct name
    Micrococcales Prévot 1940 (Approved Lists 1980)	validly published under the ICNP	correct name
    Micromonosporales Genilloud 2015	validly published under the ICNP	correct name
    Mycobacteriales Janke 1924 (Approved Lists 1980)	validly published under the ICNP	correct name
    Nakamurellales Sen et al. 2014	validly published under the ICNP	correct name
    Propionibacteriales (Rainey et al. 1997) Patrick and McDowell 2015	validly published under the ICNP	correct name
    Pseudonocardiales Labeda and Goodfellow 2015	validly published under the ICNP	correct name
    Sporichthyales Nouioui et al. 2018	validly published under the ICNP	correct name
    Streptomycetales Cavalier-Smith 2002	validly published under the ICNP, rejected name	synonym
    Streptosporangiales Goodfellow 2015	validly published under the ICNP	correct name

Parent taxon: Actinomycetota Goodfellow 2021

Assigned by: Arahal et al. Judicial Opinion No. 122. Int J Syst Evol Microbiol 2022; 72:5481.

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Record number: 3