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; L. neut. pl. n. suff. -ia, ending to denote a class; N.L. neut. pl. n. Planctomycetia, the class of Planctomycetales

Gender: neuter

Type genus: Planctomyces Gimesi 1924 (Approved Lists 1980)

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
    "Planctomycetacia" Garrity and Holt 2001	homotypic synonym, not validly published
    "Planctomycetia" Cavalier-Smith 2020	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" Cavalier-Smith 2020. 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 this class to the subphylum "Euplancta" Cavalier-Smith 2020. 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 this class to the phylum "Planctomycetes" Garrity and Holt 2001. Publication: Paster BJ. Class I. Spirochaetia class. nov. In: Krieg NR, Staley JT, Brown DR, Hedlund BP, Paster BJ, et al. (eds), Bergey's Manual of Systematic Bacteriology. The Bacteroidetes, Spirochaetes, Tenericutes (Mollicutes), Acidobacteria, Fibrobacteres, Fusobacteria, Dictyoglomi, Gemmatimonadetes, Lentisphaerae, Verrucomicrobia, Chlamydiae, and Planctomycetes, vol. 4, 2nd ed., Springer, New York, 2010, p. 471-563.
  • 🧒 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 genus Planctomyces Gimesi 1924 (Approved Lists 1980) to this class. Publication: Krieg NR. Class I. Bacteroidia class. 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.
  • 🧒 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.
  • 🙄 This taxon name is occasionally misprinted (or affected by an OCR error) in some sources as: "Plantomycetia".
  • 🎰 The BRCs most frequently used for deposits in this group are: DSM: 111; LMG: 60; VKM: 40; CECT: 29; JCM: 26; KCTC: 24; NBRC: 16; ATCC: 16; CGMCC: 4; KACC: 4.
  • 🧍 Nomenclatural type changed from Planctomycetales Schlesner and Stackebrandt 1987 based on new Rule 22. Publication: Oren A. Emendation of Rules 8, 15, 22, 25a, 30(3)(b), 30(4), 34a, and Appendix 7 of the International Code of Nomenclature of Prokaryotes. Int J Syst Evol Microbiol 2023; 73:6070.
  • 🧍 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: Planctomycetota Garrity and Holt 2021

Assigned by: Oren A, Garrity GM. Valid publication of the names of forty-two phyla of prokaryotes. Int J Syst Evol Microbiol 2021; 71:5056.

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Record number: 11159