Name: Porphyrobacter tepidarius Hanada et al. 1997

Category: Species

Proposed as: sp. nov.

Etymology: te.pi.da’ri.us. L. masc. adj. tepidarius, of or belonging to tepid water or to a tepid bath

Gender: masculine

Type strain: DSM 10594; OT3

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AB033328 Analyse FASTA

Valid publication: Hanada S, Kawase Y, Hiraishi A, Takaichi S, Matsuura K, Shimada K, Nagashima KV. Porphyrobacter tepidarius sp. nov., a moderately thermophilic aerobic photosynthetic bacterium isolated from a hot spring. Int J Syst Bacteriol 1997; 47:408-413.

IJSEM list: Anonymous. Notification list. Notification that new names and new combinations have appeared in volume 47, part 2 of the IJSB. Int J Syst Bacteriol 1997; 47:917-919.

Nomenclatural status: validly published under the ICNP

Taxonomic status: orphaned species

Risk group: 1

• Synonyms:

  • Name	Kind
    "Erythrobacter tepidarius" (Hanada et al. 1997) Xu et al. 2020	homotypic synonym, not validly published

• Notes:
  • 📧 The e-mail address of the corresponding author given in the effective publication is not functional any more.
  • ❗ Porphyrobacter tepidarius 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 risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 1, note = "Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No". — The risk group for Swiss Confederation has been imported on 2024-02-01. The full classification is: risk group = 1. — The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 1.
  • 🎓 Name mentioned 2 times in PubMed until 2024-03-27.
  • 🧍 In the paper by Hanada et al., the type strain DSM 10594 is erroneously cited as DSM 10595. Publication: Euzeby JP. List of Bacterial Names with Standing in Nomenclature: a folder available on the Internet. Int J Syst Bacteriol 1997; 47:590-592.
  • 🧍 The phylogenetic position of this species was determined in a genome-scale analysis by Hördt et al. (2020). 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: Porphyrobacter Fuerst et al. 1993

Assigned by: Hanada S, Kawase Y, Hiraishi A, Takaichi S, Matsuura K, Shimada K, Nagashima KV. Porphyrobacter tepidarius sp. nov., a moderately thermophilic aerobic photosynthetic bacterium isolated from a hot spring. Int J Syst Bacteriol 1997; 47:408-413.

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Record number: 779762