Name: Eisenibacter elegans (Reichenbach 1989 ex Lewin 1969) Hahnke et al. 2017

Category: Species

Proposed as: comb. nov.

Basonym: Flexibacter elegans (ex Lewin 1969) Reichenbach 1989

Etymology: e’le.gans. L. masc. adj. elegans, fine

Pronunciation, gender: E-le-gans, masculine

Type strain: ATCC 23112; CIP 104801; DSM 3317; IFO 15055; JCM 21159; LMG 10750; NBRC 15055; NZ-1 Lewin

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AB078048 Analyse FASTA

Effective publication: Hahnke RL, Meier-Kolthoff JP, Garcia-Lopez M, Mukherjee S, Huntemann M, Ivanova NN, Woyke T, Kyrpides NC, Klenk HP, Goker M. Genome-Based Taxonomic Classification of Bacteroidetes. Front Microbiol 2016; 7:2003.

IJSEM list: Oren A, Garrity GM. Validation list no. 175. List of new names and new combinations previously effectively, but not validly, published. Int J Syst Evol Microbiol 2017; 67:1095-1098.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name (and explicitly recommended for medical use)

Risk group: 1

• Synonyms:

  • Name	Kind
    Flexibacter elegans (ex Lewin 1969) Reichenbach 1989	homotypic synonym, validly published under the ICNP

• Notes:
  • 🥇 Nomenclatural type of the genus Eisenibacter Hahnke et al. 2017. Publication: Hahnke RL, Meier-Kolthoff JP, Garcia-Lopez M, Mukherjee S, Huntemann M, Ivanova NN, Woyke T, Kyrpides NC, Klenk HP, Goker M. Genome-Based Taxonomic Classification of Bacteroidetes. Front Microbiol 2016; 7:2003.
  • 😷 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 0 times in PubMed until 2025-06-04.
  • 🙆 This name is on the List of Recommended Names for bacteria of medical importance (LoRN) as the name to be applied to this species. The name is on LoRN because of the recorded risk group of other species in the genus.
  • 🧍 According to Ludwig et al. (2021), this "species is classified as Microscillaceae, but may be reclassified. In addition, the sequence it is identical to Hugenholtzia roseola, and may be the same species". Publication: Ludwig W, Viver T, Westram R, Francisco Gago J, Bustos-Caparros E, Knittel K, Amann R, Rossello-Mora R. Release LTP_12_2020, featuring a new ARB alignment and improved 16S rRNA tree for prokaryotic type strains. Syst Appl Microbiol 2021; 44:126218.
  • 🧍 The genome of the type strain was sequenced as part of the GEBA (Genomic Encyclopedia of Bacteria and Archaea) project. Publication: Garcia-Lopez M, Meier-Kolthoff JP, Tindall BJ, Gronow S, Woyke T, Kyrpides NC, Hahnke RL, Goker M. Analysis of 1,000 Type-Strain Genomes Improves Taxonomic Classification of Bacteroidetes. Front Microbiol 2019; 10:2083.

Parent taxon: Eisenibacter Hahnke et al. 2017

Assigned by: Hahnke RL, Meier-Kolthoff JP, Garcia-Lopez M, Mukherjee S, Huntemann M, Ivanova NN, Woyke T, Kyrpides NC, Klenk HP, Goker M. Genome-Based Taxonomic Classification of Bacteroidetes. Front Microbiol 2016; 7:2003.

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Record number: 795342