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Genus Caenibius
Name: Caenibius Hördt et al. 2020
Etymology: Cae.ni’bi.us. L. neut. n. caenum, mud, referring to the isolation of the type strain from activated sludge; Gr. masc. n. bios, life; N.L. masc. n. Caenibius, sludge life
Gender, pronunciation: masculine (stem: Caenibi-), ka͡e-NI-bi-us
Type species: Caenibius tardaugens (Fujii et al. 2003) Hördt et al. 2020
Conduct genome-based taxonomy of genus at TYGS
Effective publication:
Hordt A, Lopez MG, Meier-Kolthoff JP, Schleuning M, Weinhold LM, Tindall BJ, Gronow S, Kyrpides NC, Woyke T, Goker M. Analysis of 1,000+ Type-Strain Genomes Substantially Improves Taxonomic Classification of Alphaproteobacteria. Front Microbiol 2020; 11:468. 
IJSEM list:
Oren A, Garrity GM. Validation list no. 194. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2020; 70:4043-4049.
Nomenclatural status: validly published under the ICNP
Taxonomic status: correct name
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Notes:
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🚋 The type species of this genus has alternatively been placed in the genus Novosphingobium Takeuchi et al. 2001.
Publication:
Fujii K, Satomi M, Morita N, Motomura T, Tanaka T, Kikuchi S. Novosphingobium tardaugens sp. nov., an oestradiol-degrading bacterium isolated from activated sludge of a sewage treatment plant in Tokyo. Int J Syst Evol Microbiol 2003; 53:47-52.
- 🧬 The phylogenomic assignment score of this taxon is 0.04749 (N = 3).
- 🎰 The BRCs most frequently used for deposits in this group are: DSM: 2; NBRC: 2; CCTCC: 1; ATCC: 1; JCM: 1; KACC: 1; IFO: 1; KEMB: 1.
- 🧍 Hördt et al. (2020) gave an assignment of Caenibius to Hyphomicrobiaceae in their emendation of that family. However, in the description of their results an assignment to Erythrobacteraceae was proposed, in line with the presented phylogenetic analyses. — Chuvochina M. Personal communication, 2023-05-08.
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🚋 The type species of this genus has alternatively been placed in the genus Novosphingobium Takeuchi et al. 2001.
Publication:
Fujii K, Satomi M, Morita N, Motomura T, Tanaka T, Kikuchi S. Novosphingobium tardaugens sp. nov., an oestradiol-degrading bacterium isolated from activated sludge of a sewage treatment plant in Tokyo. Int J Syst Evol Microbiol 2003; 53:47-52.
Number of child taxa with a validly published and correct name: 3
Number of child taxa with a validly published name, including synonyms: 3
Total number of child taxa: 3
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Child taxa:
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Name Nomenclatural status Taxonomic status Caenibius estronivorus (Qin et al. 2021) Wang et al. 2025 validly published under the ICNP correct name Caenibius fulvus (Dahal and Kim 2018) Wang et al. 2025 validly published under the ICNP correct name Caenibius tardaugens (Fujii et al. 2003) Hördt et al. 2020 validly published under the ICNP correct name
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Parent taxon: Erythrobacteraceae Lee et al. 2005
Assigned by:
Hordt A, Lopez MG, Meier-Kolthoff JP, Schleuning M, Weinhold LM, Tindall BJ, Gronow S, Kyrpides NC, Woyke T, Goker M. Analysis of 1,000+ Type-Strain Genomes Substantially Improves Taxonomic Classification of Alphaproteobacteria. Front Microbiol 2020; 11:468.
Linking: To permanently link to this page, use https://lpsn.dsmz.de/genus/caenibiusLink copied to clipboard
Record number: 11043
This LPSN page was printed on 2025-12-17 04:26:03