Name: Planctomycetia Ward 2020

Category: Class

Proposed as: class. nov.

Etymology: Planc.to.my.ce.t’i.a N.L. fem. pl. n. Planctomycetales, type order of the class; N.L. neut. adj. suff. -ia, ending to denote a class; N.L. neut. pl. n. Planctomycetia, the class of Planctomycetales

Gender: neuter

Type order: Planctomycetales Schlesner and Stackebrandt 1987

Effective publication: Ward NL. Phylum XXV. Planctomycetes Garrity and Holt 2001, 137 emend. Ward (this volume). In: Krieg NR, Staley JT, Brown DR, Hedlund BP, Paster BJ, Ward NL, Ludwig W, Whitman WB (eds), Bergey's Manual of Systematic Bacteriology, 2nd edn, vol. 4, Springer, New York, 2010, p. 879-925.

IJSEM list: Oren A, Garrity GM. Validation list no. 194. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2020; 70:4043-4049.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

• Synonyms:

  • Name	Kind
    "Planctomycetia" Cavalier-Smith 2020	homotypic synonym, not validly published
    "Planctomycetacia" Garrity and Holt 2001	homotypic synonym, not validly published
    Planctomycea Cavalier-Smith 2002	homotypic synonym, validly published under the ICNP, rejected name
    "Planctomycetes" Oren et al. 2015	homotypic synonym, not validly published

• Notes:
  • Cavalier-Smith and Chao (2020) assigned this class to the infraphylum "Planctomycetia". Publication: Cavalier-Smith T, Chao EE. Multidomain ribosomal protein trees and the planctobacterial origin of neomura (eukaryotes, archaebacteria). Protoplasma 2020; 257:621-753.
  • Cavalier-Smith and Chao (2020) assigned the order Phycisphaerales Fukunaga et al. 2010 to this class. Publication: Cavalier-Smith T, Chao EE. Multidomain ribosomal protein trees and the planctobacterial origin of neomura (eukaryotes, archaebacteria). Protoplasma 2020; 257:621-753.
  • Krieg et al. (2010) assigned the order "Candidatus Brocadiales" Jetten et al. 2010 to this class. Publication: Krieg NR. Order I. Bacteroidales ord. nov. In: Krieg NR, Staley JT, Brown DR, Hedlund BP, Paster BJ, Ward NL, Ludwig W, Whitman WB (eds), Bergey's Manual of Systematic Bacteriology, 2nd edn, vol. 4, Springer, New York, 2010, p. 25.
  • The type order of this class has alternatively been placed in the class "Planctomycetacia" Garrity and Holt 2001. Publication: Garrity GM, Holt JG. The Road Map to the Manual. In: Boone DR, Castenholz RW, Garrity GM (eds), Bergey's Manual of Systematic Bacteriology, second edition, vol. 1 (The Archaea and the deeply branching and phototrophic Bacteria), Springer-Verlag, New York, 2001, p. 119-166.
  • The validation of Planctomycetia Ward 2010 was suggested by the LPSN maintainers. In the aftermath, child taxa previously assigned to the not validly published name "Planctomycetacia" (sic) could be assigned to Planctomycetia. Publication: Parte AC, Sarda Carbasse J, Meier-Kolthoff JP, Reimer LC, Goker M. List of Prokaryotic names with Standing in Nomenclature (LPSN) moves to the DSMZ. Int J Syst Evol Microbiol 2020; 70:5607-5612.

Subdivision:

Number of child taxa with a validly published and correct name: 4
Number of child taxa with a validly published name, including synonyms: 4
Total number of child taxa: 4

• Child taxa:

  • Name	Nomenclatural status	Taxonomic status
    Gemmatales Dedysh et al. 2020	validly published under the ICNP	correct name
    Isosphaerales Dedysh et al. 2020	validly published under the ICNP	correct name
    Pirellulales Dedysh et al. 2020	validly published under the ICNP	correct name
    Planctomycetales Schlesner and Stackebrandt 1987	validly published under the ICNP	correct name

Parent taxon: "Planctomycetes" Garrity and Holt 2001

Assigned by: Thrash JC, Coates JD. Class I. Acidobacteriia Cavalier-Smith 2002, 12 VP emend. In: Krieg NR, Staley JT, Brown DR, Hedlund BP, Paster BJ, Ward NL, Ludwig W, Whitman WB (eds), Bergey’s Manual of Systematic Bacteriology, second edition, vol. 4 (The Bacteroidetes, Spirochaetes, Tenericutes (Mollicutes), Acidobacteria, Fibrobacteres, Fusobacteria, Dictyoglomi, Gemmatimonadetes, Lentisphaerae, Verrucomicrobia, Chlamydiae, and Planctomycetes), Springer, New York, 2010, p. 727.

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Record number: 11159