Name: Sphaerotilus Kützing 1833 (Approved Lists 1980)

Category: Genus

Proposed as: gen. nov.

Etymology: Sphae.ro.ti’lus. Gr. fem. n. sphaîra, a sphere; Gr. masc. n. tîlos, anything plucked, intended to mean flock (in Greek, the noun tila means "flocks or motes floating in the air"); N.L. masc. n. Sphaerotilus, spherical flock

Gender, pronunciation (Latin): masculine (stem: Sphaerotil-), sp^ha͡e-ro-TI-lus

Type species: Sphaerotilus natans Kützing 1833 (Approved Lists 1980)

Conduct genome-based taxonomy of genus at TYGS

16S rRNA gene: Analyse FASTA

Effective publication: Kützing FT. Beitrag zur Kenntnis über die Entstehung und Metamorphose der niedern vegetabilischen Organismen, nebst einer systematischen Zusammenstellung der hierher gehörigen niedern Algenformen. Linnaea 1833; 8:335-387.

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

Risk group: 1

• Emendations:
  • Gridneva et al. 2011 Gridneva E, Chernousova E, Dubinina G, Akimov V, Kuever J, Detkova E, Grabovich M. Taxonomic investigation of representatives of the genus Sphaerotilus: descriptions of Sphaerotilus montanus sp. nov., Sphaerotilus hippei sp. nov., Sphaerotilus natans subsp. natans subsp. nov. and Sphaerotilus natans subsp. sulfidivorans subsp. nov., and an emended description of the genus Sphaerotilus. Int J Syst Evol Microbiol 2011; 61:916-925. 🇷🇺 Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 61, part 4 of the IJSEM. Int J Syst Evol Microbiol 2011; 61:1502-1503.
    Notes:
    • ⊕ Emendation accompanied by the proposal of 2 new species in the genus.

• Notes:
  • 🥇 Nomenclatural type of the family Sphaerotilaceae Liu et al. 2023. Publication: Liu Y, Du J, Pei T, Du H, Feng GD, Zhu H. Genome-based taxonomic classification of the closest-to-Comamonadaceae group supports a new family Sphaerotilaceae fam. nov. and taxonomic revisions. Syst Appl Microbiol 2022; 45:126352. 🇨🇳
  • 🧕 Bergey et al. (1923) assigned this genus to the family "Chlamydobacteriaceae" Migula 1894. Publication: Waksman SA. Genus III. Actinomyces Harz,. In: Bergey DH, Harrison FC, Breed RS, Hammer BW, Huntoon FM (eds), Bergey's Manual of Determinative Bacteriology, 1st ed., The Williams & Wilkins Co, Baltimore, 1923, p. 339-371.
  • 🧕 Breed et al. (1948) assigned this genus to the family "Chlamydobacteriaceae" Migula 1894. Publication: Burkholder WH. Genus I. Pseudomonas Migula. Bacterial plant pathogens. In: Breed RS, Murray EGD, Hitchens AP (eds), Bergey's Manual of Determinative Bacteriology, 6th ed., The Williams & Wilkins Co, Baltimore, 1948, p. 82-150.
  • 🧕 Breed et al. (1957) assigned this genus to the family "Chlamydobacteriaceae" Migula 1894. 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.
  • 🧕 Brenner et al. (2005) assigned this genus to the family Comamonadaceae Willems et al. 1991. Publication: Garrity GM, Bell JA, Lilburn T. Class I. Alphaproteobacteria 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 C (The Alpha-, Beta-, Delta-, and Epsilonproteobacteria), Springer, New York, 2005, p. 1. 🇺🇸
  • 🧕 Cavalier-Smith (1981) assigned this genus to the subkingdom "Eubacteria" Cavalier-Smith 1981. Publication: Cavalier-Smith T. Eukaryote kingdoms: seven or nine? Biosystems 1981; 14:461-481.
  • 🧕 Yilmaz et al. (2014) assigned this genus to the order Burkholderiales Garrity et al. 2006. Publication: Yilmaz P, Parfrey LW, Yarza P, Gerken J, Pruesse E, Quast C, Schweer T, Peplies J, Ludwig W, Glöckner FO. The SILVA and “all-species living tree project (LTP)” taxonomic frameworks. Nucleic Acids Research 2014; 42(D1):D643-D648. 🇩🇪
  • 🙄 This taxon name is occasionally misprinted (or affected by an OCR error) in some sources as: "Hphaerolilus"; "Jhaerotilus"; "Spaerotilus"; "Sphacrolilus"; "Sphacrotilus"; "Sphaeiotilus"; "Sphaemtiius"; "Sphaemtilus"; "Sphaemzilus"; "Sphaeraeilus"; "Sphaeratilus"; "Sphaeretilus"; "Sphaeroilus"; "Sphaerolilus"; "Sphaerothilus"; "Sphaerotilis"; "Sphaerotjlus"; "Sphaerotllus"; "Sphaerottlus"; "Sphaerozilus"; "Sphamozilus"; "Sphcerotilus"; "Spliaerotilus"; "Splzaerotilus".
  • 🎰 The BRCs most frequently used for deposits in this group are: DSM: 6; LMG: 3; ATCC: 3; VKM: 2; CCM: 2; JCM: 1; KACC: 1.
  • 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 1, note = "Animal classification RG: 1 - Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No - Containment level: Containment Level 1". — If in doubt, use the risk group given in the regulations for your country and, if these are not available, use the risk group given in the catalogue of the culture collection from which you have obtained or intend to obtain the strain.
  • 🧍 Pittman et al. (1991) suggested the abbreviation "SFTL" for this genus name but this does not appear to be of practical relevance any longer. Publication: Pittman KF, Walczak CA, Lock CM. Codes and abbreviations for approved of effectively published names of genera of bacteria published from January 1980 to December 1990. Int J Syst Bacteriol 1991; 41:571-579.

Subdivision:

Number of child taxa with a validly published and correct name: 6
Number of child taxa with a validly published name, including synonyms: 7
Total number of child taxa: 9

• Child taxa:

  • Name	Nomenclatural status	Taxonomic status
    "Sphaerotilus cholodnii" (Mulder and van Veen 1963) Smolyakov et al. 2025	not validly published	synonym
    "Sphaerotilus discophorus" (Spring et al. 1997 ex Schwers 1912) Smolyakov et al. 2025	not validly published	synonym
    Sphaerotilus hippei Gridneva et al. 2011	validly published under the ICNP	correct name
    Sphaerotilus microaerophilus Narihara et al. 2024	validly published under the ICNP	correct name
    Sphaerotilus mobilis (Spring et al. 1997) Liu et al. 2023	validly published under the ICNP	correct name
    Sphaerotilus montanus Gridneva et al. 2011	validly published under the ICNP	correct name
    Sphaerotilus natans Kützing 1833 (Approved Lists 1980)	validly published under the ICNP	correct name
    Sphaerotilus sulfidivorans (Gridneva et al. 2011) Grabovich et al. 2021	validly published under the ICNP	synonym
    Sphaerotilus uruguayifluvii Machin et al. 2025	validly published under the ICNP	correct name

Parent taxon: Sphaerotilaceae Liu et al. 2023

Assigned by: Lu H, Chen L. Ideonella margarita sp. nov., Ideonella lacteola sp. nov., Pseudaquabacterium inlustre sp. nov. and Pseudaquabacterium rugosum sp. nov., isolated from streams in China and re-examining the taxonomic status of all the genera within the family Sphaerotilaceae. Int J Syst Evol Microbiol 2024; 74:6495. 🇨🇳

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Record number: 516625