Name: Afifella pfennigii (Caumette et al. 2007) Urdiain et al. 2009

Category: Species

Proposed as: comb. nov.

Basonym: Rhodobium pfennigii Caumette et al. 2007

Etymology: pfen.ni’gi.i. N.L. gen. masc. n. pfennigii, of Pfennig, named after Norbert Pfennig, a German microbiologist

Pronunciation, gender: pfen-NI-gi-i, feminine

Type strain: AR2102; ATCC BAA-1145; DSM 17143

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: EU445271 Analyse FASTA

Effective publication: Urdiain M, Lopez-Lopez A, Gonzalo C, Busse HJ, Langer S, Kampfer P, Rossello-Mora R. Reclassification of Rhodobium marinum and Rhodobium pfennigii as Afifella marina gen. nov. comb. nov. and Afifella pfennigii comb. nov., a new genus of photoheterotrophic Alphaproteobacteria and emended descriptions of Rhodobium, Rhodobium orientis and Rhodobium gokarnense. Syst Appl Microbiol 2008; 31:339-351.

IJSEM list: Euzeby JP. Validation list no. 127. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2009; 59:923-925.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Synonyms:

  • Name	Kind
    Rhodobium pfennigii Caumette et al. 2007	homotypic synonym, validly published under the ICNP

• Notes:
  • 😷 The risk group for Germany has been imported on 2023-10-29. 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 5 times in PubMed until 2025-06-04.
  • 🧍 The genome of the type strain was sequenced as part of the GEBA (Genomic Encyclopedia of Bacteria and Archaea) project. 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.

Parent taxon: Afifella Urdiain et al. 2009

Assigned by: Urdiain M, Lopez-Lopez A, Gonzalo C, Busse HJ, Langer S, Kampfer P, Rossello-Mora R. Reclassification of Rhodobium marinum and Rhodobium pfennigii as Afifella marina gen. nov. comb. nov. and Afifella pfennigii comb. nov., a new genus of photoheterotrophic Alphaproteobacteria and emended descriptions of Rhodobium, Rhodobium orientis and Rhodobium gokarnense. Syst Appl Microbiol 2008; 31:339-351.

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Record number: 787828