Name: Caedibacter (ex Preer et al. 1974) Preer and Preer 1982

Category: Genus

Proposed as: gen. nov., nom. rev.

Etymology: Cae.di.bac’ter. L. fem. n. caedes (gen. caedis), a killing, slaughter, carnage, massacre, a murderous attack; N.L. masc. n. bacter, a rod; N.L. masc. n. Caedibacter, the bacterium which kills

Gender, pronunciation: masculine (stem: Caedibacter-), ka͡e-di-BAK-ter

Type species: Caedibacter taeniospiralis (ex Preer et al. 1974) Preer and Preer 1982

Conduct genome-based taxonomy of genus at TYGS

16S rRNA gene: Analyse FASTA

Valid publication: Preer Jr. JR, Preer LB. Revival of names of protozoan endosymbionts and proposal of Holospora caryophila nom. nov. Int. J. Syst. Bacteriol. 1982; 32:140-141.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

• Synonyms:

  • Name	Kind
    "Caedimonas" Schrallhammer et al. 2018	heterotypic synonym, not validly published

• Emendations:
  • Schrallhammer et al. 2018 Schrallhammer M, Castelli M, Petroni G. Phylogenetic relationships among endosymbiotic R-body producer: Bacteria providing their host the killer trait. Syst Appl Microbiol 2018; 41:213-220.
    Notes:
    • 🧍 As of 2020-09-22 this emendation was not yet included in an IJSEM List of Changes in Taxonomic Opinion.

• Notes:
  • 🧕 Brenner et al. (2005) assigned this genus to the family Holosporaceae Görtz and Schmidt 2006. Publication: Görtz HD, Schmidt HJ. Family III. Holosporaceae fam. 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. 146-149.
  • 🧕 Schrallhammer et al. (2018) assigned this genus to the family "Caedimonadaceae" Schrallhammer et al. 2018. Publication: Schrallhammer M, Castelli M, Petroni G. Phylogenetic relationships among endosymbiotic R-body producer: Bacteria providing their host the killer trait. Syst Appl Microbiol 2018; 41:213-220.
  • 🧕 Yilmaz et al. (2014) assigned this genus to the order Thiotrichales Garrity et al. 2005. 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: "Cacdibacter"; "Caedihacter"; "Caedobacter".
  • 🧬 The phylogenomic assignment score of this taxon is 0.19238 (N = 1).
  • 🎰 The BRCs most frequently used for deposits in this group are: ATCC: 6.
  • 🧍 Pittman et al. (1991) suggested the abbreviation "CAED" 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.
  • 🧍 According to Beier et al. 2002, of the five species validly published, only Caedibacter caryophilus and Caedibacter taeniospiralis (the type species of the genus) have been phylogenetically characterized by their 16S rRNA gene sequences. Caedibacter caryophilus was found to be a member of the Alphaproteobacteria related to the Rickettsiales. According to Beier et al., Caedibacter taeniospiralis is not closely related to Caedibacter caryophilus (80% 16S rRNA sequence similarity) but forms a novel evolutionary lineage within the Gammaproteobacteria with the family Francisellaceae as a sister group (87% 16S rRNA sequence similarity). Consequently, the genus Caedibacter is polyphyletic and comprises at least two phylogenetically different bacterial species belonging to two different classes of the Proteobacteria. Publication: Beier CL, Horn M, Michel R, Schweikert M, Gortz HD, Wagner M. The genus Caedibacter comprises endosymbionts of Paramecium spp. related to the Rickettsiales (Alphaproteobacteria) and to Francisella tularensis (Gammaproteobacteria). Appl Environ Microbiol 2002; 68:6043-6050.

Subdivision:

Number of child taxa with a validly published and correct name: 5
Number of child taxa with a validly published name, including synonyms: 5
Total number of child taxa: 8

• Child taxa:

  • Name	Nomenclatural status	Taxonomic status
    "Candidatus Caedibacter acanthamoebae" Horn et al. 1999	not validly published	pro-correct name
    Caedibacter caryophila Schmidt et al. 1987	inaccurate spelling	misspelling
    Caedibacter caryophilus corrig. Schmidt et al. 1987	validly published under the ICNP	correct name
    "Caedibacter macronucleorum" Fokin and Görtz 1993	not validly published	preferred name
    Caedibacter paraconjugatus Quackenbush 1982	validly published under the ICNP	correct name
    Caedibacter pseudomutans Quackenbush 1982	validly published under the ICNP	correct name
    Caedibacter taeniospiralis (ex Preer et al. 1974) Preer and Preer 1982	validly published under the ICNP	correct name
    Caedibacter varicaedens Quackenbush 1982	validly published under the ICNP	correct name

Parent taxon: Fastidiosibacteraceae Xiao et al. 2018

Assigned by: Xiao M, Salam N, Liu L, Jiao JY, Zheng ML, Wang J, Li S, Chen C, Li WJ, Qu PH. Fastidiosibacter lacustris gen. nov., sp. nov., isolated from a lake water sample, and proposal of Fastidiosibacteraceae fam. nov. within the order Thiotrichales. Int J Syst Evol Microbiol 2018; 68:347-352.

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Record number: 517191