Name: Pseudocaedibacter falsus (ex Preer et al. 1974) Quackenbush 1982

Category: Species

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

Etymology: fal’sus. L. masc. part. adj. falsus, deceptive, false

Pronunciation (Latin), gender: pse͡u-do-ka͡e-di-BAK-ter FAL-sus, masculine

Type strain: 1010; ATCC 30640

Effective publication: Quackenbush RL. Genetic relationships among bacterial endosymbionts of Paramecium aurelia. Deoxyribonucleotide sequence relationships among members of Caedobacter. J. Gen. Microbiol. 1978; 108:181-187.

IJSEM list: Anonymous. Validation list no. 8. Validation of publication of new names and new combinations previously effectively published outside the IJSB. Int J Syst Bacteriol 1982; 32:266-268.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Notes:
  • 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 1, note = "Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No". — The risk group for Swiss Confederation has been imported on 2024-02-01. The full classification is: risk group = 1. — The risk group for Germany has been imported on 2026-08-13. The full classification is: risk group = 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.
  • 🎓 Name mentioned 0 times in PubMed until 2026-06-11.
  • 🧍 According to Yarza et al. (2013), an "un-sequenced orphan species where descriptions, illustrations or dead preserved material serve as the type. Protist endosymbiont.". Publication: Yarza P, Sproer C, Swiderski J, Mrotzek N, Spring S, Tindall BJ, Gronow S, Pukall R, Klenk HP, Lang E, et al. Sequencing orphan species initiative (SOS): Filling the gaps in the 16S rRNA gene sequence database for all species with validly published names. Syst Appl Microbiol 2013; 36:69-73. 🇩🇪
  • 🧍 On the Validation List no. 8, Pseudocaedibacter falsus is erroneously proposed as a new species. Publication: Euzeby JP, Kudo T. Corrigenda to the validation lists. Int J Syst Evol Microbiol 2001; 51:1933-1938. 🇫🇷

Parent taxon: Pseudocaedibacter Quackenbush 1982

Assigned by: Quackenbush RL. Genetic relationships among bacterial endosymbionts of Paramecium aurelia. Deoxyribonucleotide sequence relationships among members of Caedobacter. J. Gen. Microbiol. 1978; 108:181-187.

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Record number: 784707