Name: Gammaproteobacteria Garrity et al. 2005

Category: Class

Proposed as: class. nov.

Etymology: Gr. n. gamma, name of the third letter of Greek alphabet; L. masc. n. Proteus, Greek god of the sea, capable of assuming many different shapes; N.L. masc. n. bacter, rod; L. fem. suff. -ia, ending to denote a class; N.L. neut. pl. n. Gammaproteobacteria, a class of bacteria included in the phylum Proteobacteria and having 16S rRNA gene sequences related to those of the members of the order Pseudomonadales

Type order: Pseudomonadales Orla-Jensen 1921 (Approved Lists 1980)

Effective publication: Garrity GM, Bell JA, Lilburn T. Class III. Gammaproteobacteria class. nov. In: Brenner DJ, Krieg NR, Staley JT, Garrity GM (eds), Bergey's Manual of Systematic Bacteriology, 2nd edn, vol. 2 (The Proteobacteria), part B (The Gammaproteobacteria), Springer, New York, 2005, p. 1.

IJSEM list: Euzeby JP. Validation list no. 106. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2005; 55:2235-2238.

Nomenclatural status: validly published

Taxonomic status: correct name

• Emendations:
  • Williams and Kelly 2013 Williams KP, Kelly DP. Proposal for a new class within the phylum Proteobacteria, Acidithiobacillia classis nov., with the type order Acidithiobacillales, and emended description of the class Gammaproteobacteria. Int J Syst Evol Microbiol 2013; 63:2901-2906. Oren A, Garrity GM. Notification list. Notification that new names and new combinations have appeared in volume 63, part 8 of the IJSEM. Int J Syst Evol Microbiol 2013; 63:3935-3936.
    Notes:
    • Emendation accompanied by the removal of 1 order from the class.

• Notes:
  • Cavalier-Smith (2006) assigned this class to the subphylum "Rhodobacteria" Cavalier-Smith 2002. Publication: Cavalier-Smith T. Rooting the tree of life by transition analyses. Biol Direct 2006; 1:19.
  • Brenner et al. (2005) assigned the order Acidithiobacillales Garrity et al. 2005 to this class. Publication: Garrity GM, Bell JA, Lilburn T. Order II. Acidithiobacillales ord. nov. In: Brenner DJ, Krieg NR, Staley JT, Garrity GM (eds), Bergey's Manual of Systematic Bacteriology, 2nd edn, vol. 2 (The Proteobacteria), part B (The Gammaproteobacteria), Springer, New York, 2005, p. 60.
  • Brenner et al. (2005) assigned the order Xanthomonadales Saddler and Bradbury 2005 to this class. Publication: Saddler GS, Bradbury JF. Order III. Xanthomonadales ord. nov. In: Brenner DJ, Krieg NR, Staley JT, Garrity GM (eds), Bergey's Manual of Systematic Bacteriology, 2nd edn, vol. 2 (The Proteobacteria), part B (The Gammaproteobacteria), Springer, New York, 2005, p. 63.
  • The type order of this class has alternatively been placed in the class Schizomycetes Nägeli 1857 (Approved Lists 1980). Publication: Parker CD. Genus V. Thiobacillus Beijerinck 1904. In: Breed RS, Murray EGD, Smith NR (eds), Bergey's Manual of Determinative Bacteriology, 7th edition, The Williams & Wilkins Co, Baltimore, 1957, p. 83-88.
  • This taxon name is occasionally misprinted in the literature as: "Gamaproteobacteria"; "Gammaprotebacteria"; "Gammaroteobacteria"; "Gammproteobacteria".

Subdivision:

Number of child taxa with a validly published and correct name: 18
Number of child taxa with a validly published name, including synonyms: 18
Total number of child taxa: 20

• Child taxa:

  • Name	Nomenclatural status	Taxonomic status
    Acidiferrobacterales Kojima et al. 2015	validly published	correct name
    Aeromonadales Martin-Carnahan and Joseph 2005	validly published	correct name
    Alteromonadales Bowman and McMeekin 2005	validly published	correct name
    Arenicellales Teramoto et al. 2015	validly published	correct name
    Cardiobacteriales Garrity et al. 2005	validly published	correct name
    Cellvibrionales Spring et al. 2015	validly published	correct name
    Chromatiales Imhoff 2005	validly published	correct name
    Enterobacterales Adeolu et al. 2016	validly published	correct name
    [Gammaproteobacteria, not assigned to order]	artificial parent node of taxa incertae sedis
    Immundisolibacterales Corteselli et al. 2017	validly published	correct name
    Legionellales Garrity et al. 2005	validly published	correct name
    Lysobacterales Christensen and Cook 1978 (Approved Lists 1980)	validly published	correct name
    Methylococcales Bowman 2005	validly published	correct name
    Nevskiales Naushad et al. 2015	validly published	correct name
    Oceanospirillales Garrity et al. 2005	validly published	correct name
    Orbales Kwong and Moran 2013	validly published	correct name
    Pasteurellales Garrity et al. 2005	validly published	correct name
    Pseudomonadales Orla-Jensen 1921 (Approved Lists 1980)	validly published	correct name
    Thiotrichales Garrity et al. 2005	validly published	correct name
    "Vibrionales" Garrity and Holt 2001	not validly published

Parent taxon: "Proteobacteria" Garrity et al. 2005

Assigned by: Garrity GM, Bell JA, Lilburn T. Class III. Gammaproteobacteria class. nov. In: Brenner DJ, Krieg NR, Staley JT, Garrity GM (eds), Bergey's Manual of Systematic Bacteriology, 2nd edn, vol. 2 (The Proteobacteria), part B (The Gammaproteobacteria), Springer, New York, 2005, p. 1.

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