Name: Porphyrobacter cryptus da Costa et al. 2003

Category: Species

Proposed as: sp. nov.

Etymology: cryp’tus. N.L. masc. adj. cryptus, hidden, to indicate the cryptic relationship of this species to the closely related organisms; from Gr. masc. adj. kryptos, hidden

Gender: masculine

Type strain: ALC-2; ATCC BAA-386; DSM 12079

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AF465834 Analyse FASTA

Valid publication: Rainey FA, Silva J, Nobre MF, Silva MT, da Costa MS. Porphyrobacter cryptus sp. nov., a novel slightly thermophilic, aerobic, bacteriochlorophyll a-containing species. Int J Syst Evol Microbiol 2003; 53:35-41.

IJSEM list: Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 53, part 1 of the IJSEM. Int J Syst Evol Microbiol 2003; 53:629-630.

Nomenclatural status: validly published under the ICNP

Taxonomic status: synonym

Correct name: Erythrobacter cryptus (da Costa et al. 2003) Xu et al. 2020

Risk group: 1

• Synonyms:

  • Name	Kind
    Erythrobacter cryptus (da Costa et al. 2003) Xu et al. 2020	homotypic synonym, validly published under the ICNP

• Emendations:
  • Hördt et al. 2020 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. Oren A, Garrity GM. List of changes in taxonomic opinion no. 32. Notification of changes in taxonomic opinion previously published outside the IJSEM. Int J Syst Evol Microbiol 2020; 70:4061-4090.
    Notes:
    • 🧍 The genome of the type strain was sequenced as part of the GEBA (Genomic Encyclopedia of Bacteria and Archaea) project.

• Notes:
  • ❗ Porphyrobacter cryptus is the correct name instead if this species is regarded as a separate species (i.e., if its nomenclatural type is not assigned to another species whose name is validly published, legitimate and not rejected and has priority) within a separate genus Porphyrobacter.
  • ✏ The authority of the taxon name (da Costa et al.) deliberately differs from the authors of the publication (Rainey et al.).
  • 😷 The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 1.
  • 🎓 Name mentioned 1 time in PubMed until 2024-03-27.
  • 🧍 Complete authorship reads: da Costa, Rainey and Nobre.

Parent taxon: Porphyrobacter Fuerst et al. 1993

Assigned by: Rainey FA, Silva J, Nobre MF, Silva MT, da Costa MS. Porphyrobacter cryptus sp. nov., a novel slightly thermophilic, aerobic, bacteriochlorophyll a-containing species. Int J Syst Evol Microbiol 2003; 53:35-41.

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Record number: 779755