Species Phaeobacter caeruleus

Name: Phaeobacter caeruleus Vandecandelaere et al. 2009

Category, proposed as: species, sp. nov.

Etymology: cae.ru’le.us. L. masc. adj. caeruleus, dark blue coloured, referring to the colony colour of the isolates

Pronunciation (Latin), gender: p^ha͡e-o-BAK-ter ka͡e-RU-le-us, masculine

Type strain: CCUG 55859; DSM 24564; LMG 24369

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: KC176242 Analyse FASTA

Valid publication: Vandecandelaere I, Segaert E, Mollica A, Faimali M, Vandamme P. Phaeobacter caeruleus sp. nov., a blue-coloured, colony-forming bacterium isolated from a marine electroactive biofilm. Int J Syst Evol Microbiol 2009; 59:1209-1214. 🇧🇪

IJSEM list: Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 59, part 5 of the IJSEM. Int J Syst Evol Microbiol 2009; 59:1853-1855.

Nomenclatural status: validly published under the ICNP

Taxonomic status: synonym

Correct name: Leisingera caerulea (Vandecandelaere et al. 2009) Breider et al. 2014

Risk group: 1

• Synonyms:

  • Name	Kind
    Leisingera caerulea (Vandecandelaere et al. 2009) Breider et al. 2014	homotypic synonym, validly published under the ICNP

• Notes:
  • ❗ Phaeobacter caeruleus 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 Phaeobacter.
  • 😷 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 7 times in PubMed until 2026-06-11.
  • 🧍 The genome of the type strain was sequenced as part of the DOE Joint Genome Institute Community Sequencing Programme. Publication: Beyersmann PG, Chertkov O, Petersen J, Fiebig A, Chen A, Pati A, Ivanova N, Lapidus A, Goodwin LA, Chain P, et al. Genome sequence of Phaeobacter caeruleus type strain (DSM 24564^T), a surface-associated member of the marine Roseobacter clade. Stand Genomic Sci 2013; 8:403-419. 🇩🇪

Parent taxon: Phaeobacter Martens et al. 2006

Assigned by: Vandecandelaere I, Segaert E, Mollica A, Faimali M, Vandamme P. Phaeobacter caeruleus sp. nov., a blue-coloured, colony-forming bacterium isolated from a marine electroactive biofilm. Int J Syst Evol Microbiol 2009; 59:1209-1214. 🇧🇪

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Record number: 787872