Order Chromatiales

Name: Chromatiales Imhoff 2005

Category, proposed as: order, ord. nov.

Etymology: Chro.ma.ti.a’les. N.L. neut. n. Chromatium, type genus of the order; L. fem. pl. n. suff. -ales, ending to denote an order; N.L. fem. pl. n. Chromatiales, the Chromatium order

Pronunciation (Latin), gender: k^hro-ma-ti-A-les, feminine

Type genus: Chromatium Perty 1852 (Approved Lists 1980)

Effective publication: Imhoff JF. Order I. Chromatiales 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. 1-3. 🇺🇸

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 under the ICNP

Taxonomic status: correct name

• Synonyms:

  • Name	Kind
    Nitrosococcales Chuvochina et al. 2024	heterotypic synonym, validly published under the ICNP
    Thiohalospirales Sorokin and Merkel 2023	heterotypic synonym, validly published under the ICNP
    Granulosicoccales Chuvochina et al. 2024	heterotypic synonym, validly published under the ICNP
    Nitrococcales Chuvochina et al. 2024	heterotypic synonym, validly published under the ICNP
    Thiohalomonadales Sorokin and Merkel 2023	heterotypic synonym, validly published under the ICNP
    "Candidatus Tenderiales" Chuvochina et al. 2023	heterotypic synonym, not pro-validly published
    Ectothiorhodospirales Chuvochina et al. 2024	heterotypic synonym, validly published under the ICNP
    Methylohalomonadales Sorokin and Merkel 2023	heterotypic synonym, validly published under the ICNP
    Halothiobacillales Chuvochina et al. 2024	heterotypic synonym, validly published under the ICNP
    Natronospirales Sorokin et al. 2025	heterotypic synonym, validly published under the ICNP
    Woeseiales Chuvochina et al. 2024	heterotypic synonym, validly published under the ICNP

• Notes:
  • 🥇 Nomenclatural type of the class "Chromatiia" 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. 🇬🇧
  • 🧒 Brenner et al. (2005) assigned the genus Chromatium Perty 1852 (Approved Lists 1980) to this order. Publication: Imhoff JF. Order I. Chromatiales 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. 1-3. 🇺🇸
  • 🧒 Brenner et al. (2005) assigned the genus Arhodomonas Adkins et al. 1993 to this order. Publication: Imhoff JF. Order I. Chromatiales 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. 1-3. 🇺🇸
  • 🧒 Lavy et al. (2018) assigned the genus "Candidatus Poriferisulfidus" corrig. Lavy et al. 2018 to this order. Publication: Lavy A, Keren R, Yu K, Thomas BC, Alvarez-Cohen L, Banfield JF, Ilan M. A novel Chromatiales bacterium is a potential sulfide oxidizer in multiple orders of marine sponges. Environ Microbiol 2018; 20:800-814. 🇺🇸
  • 🙄 This taxon name is occasionally misprinted (or affected by an OCR error) in some sources as: "Chroamtiales"; "Chromariales"; "Chtomatiales".
  • 🧔 This taxon was discussed in a meeting of a Taxonomic Subcommittee of the ICSP. Publication: Madigan MT, Imhoff JF. International Committee on Systematics of Prokaryotes: Subcommittee on the taxonomy of phototrophic bacteria. International Journal of Systematic and Evolutionary Microbiology 2007; 57:1169-1171. 🇺🇸
  • 🎰 The BRCs most frequently used for deposits in this group are: DSM: 179; ATCC: 67; JCM: 62; KCTC: 54; NBRC: 25; LMG: 22; MCCC: 21; UNIQEM: 21; CECT: 12; NCCB: 10.

Subdivision:

Number of child taxa with a validly published and correct name: 11
Number of child taxa with a validly published name, including synonyms: 24
Total number of child taxa: 27

• Child taxa:

  • Name	Nomenclatural status	Taxonomic status
    Acidihalobacteraceae Chuvochina et al. 2024	validly published under the ICNP	synonym
    "Aquichromatiaceae" Yang et al. 2017	not validly published	preferred name
    Aquisalimonadaceae Chuvochina et al. 2024	validly published under the ICNP	synonym
    Chromatiaceae Bavendamm 1924 (Approved Lists 1980)	validly published under the ICNP	correct name
    Ectothiorhodospiraceae Imhoff 1984	validly published under the ICNP	correct name
    Granulosicoccaceae Lee et al. 2008	validly published under the ICNP	correct name
    Halofilaceae Chuvochina et al. 2024	validly published under the ICNP	synonym
    Halorhodospiraceae Imhoff et al. 2023	validly published under the ICNP	correct name
    Halothiobacillaceae Kelly and Wood 2005	validly published under the ICNP	correct name
    Methylohalomonadaceae Sorokin and Merkel 2023	validly published under the ICNP	synonym
    Natronospiraceae Sorokin et al. 2025	validly published under the ICNP	synonym
    Nitrococcaceae Chuvochina et al. 2024	validly published under the ICNP	synonym
    Nitrosococcaceae Chuvochina et al. 2024	validly published under the ICNP	synonym
    Oceanococcaceae Chuvochina et al. 2024	validly published under the ICNP	synonym
    "Candidatus Poriferisulfidaceae" Chuvochina et al. 2023	not validly published	preferred name
    Sedimenticolaceae Slobodkina et al. 2024	validly published under the ICNP	correct name
    "Candidatus Tenderiaceae" Chuvochina et al. 2023	not validly published	synonym
    Thioalkalibacteraceae Boden 2017	validly published under the ICNP	correct name
    Thioalkalispiraceae Mori et al. 2011	validly published under the ICNP	correct name
    Thioalkalivibrionaceae Chuvochina et al. 2024	validly published under the ICNP	synonym
    Thiocapsaceae Bavendamm 1924 (Approved Lists 1980)	validly published under the ICNP	synonym
    Thiohalomonadaceae Sorokin and Merkel 2023	validly published under the ICNP	synonym
    Thiohalophilaceae Sorokin and Merkel 2023	validly published under the ICNP	synonym
    Thiohalospiraceae Sorokin and Merkel 2023	validly published under the ICNP	synonym
    Thioprofundaceae Kojima et al. 2017	validly published under the ICNP	correct name
    Wenzhouxiangellaceae Wang et al. 2015	validly published under the ICNP	correct name
    Woeseiaceae Du et al. 2016	validly published under the ICNP	correct name

Parent taxon: Gammaproteobacteria Garrity et al. 2005

Assigned by: Imhoff JF. Order I. Chromatiales 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. 1-3. 🇺🇸

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Record number: 5050