Name: Pseudovibrio exalbescens (Donachie et al. 2006) Hördt et al. 2020

Category: Species

Proposed as: comb. nov.

Basonym: Nesiotobacter exalbescens Donachie et al. 2006

Etymology: ex.al.bes’cens. L. masc. part. adj. exalbescens, becoming white, growing white, referring to the fading color of maturing colonies; from L. v. exalbesco

Pronunciation (Latin), gender: pse͡u-do-WI-bri-o ex-al-BES-kens, masculine

Type strain: ATCC BAA-994; BAA-994; CIP 108449; DSM 16456; LA33B

Conduct genome-based taxonomy at

16S rRNA gene: AF513441 Analyse FASTA

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

Risk group: 1

• Synonyms:

  • Name	Kind
    Nesiotobacter exalbescens Donachie et al. 2006	homotypic synonym, validly published under the ICNP

• Notes:
  • 🧬 The phylogenomic assignment score of this taxon is 0.05205 (N = 3).
  • 😷 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.

Parent taxon: Pseudovibrio Shieh et al. 2004

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. 🇩🇪

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Record number: 11102