Name: Blastobacter aggregatus Hirsch and Müller 1986

Category: Species

Proposed as: sp. nov.

Etymology: ag.gre.ga’tus. L. masc. part. adj. aggregatus, added to, joined together, referring to the frequent formation of rosettes

Gender: masculine

Type strain: ATCC 43293; DSM 111; DSM 1111; IFAM 1003; LMG 23059; Müller 161; Strain Miiller 161; VKM B-2061

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: X73041 Analyse FASTA

Effective publication: Hirsch P, Müller M. Blastobacter aggregatus sp. nov., Blastobacter capsulatus sp. nov., and Blastobacter denitrificans sp. nov., new budding bacteria from freshwater habitats. Syst. Appl. Microbiol. 1985; 6:281-286.

IJSEM list: Anonymous. Validation list no. 20. Validation of publication of new names and new combinations previously effectively published outside the IJSB. Int J Syst Bacteriol 1986; 36:354-356.

Nomenclatural status: validly published under the ICNP

Taxonomic status: synonym

Correct name: Rhizobium aggregatum (Hirsch and Müller 1986) Kaur et al. 2011

Risk group: 1

• Synonyms:

  • Name	Kind
    Rhizobium aggregatum (Hirsch and Müller 1986) Kaur et al. 2011	homotypic synonym, validly published under the ICNP
    Peteryoungia aggregata (Hirsch and Müller 1986) Kuzmanović et al. 2022	homotypic synonym, validly published under the ICNP

• Notes:
  • ❗ Blastobacter aggregatus 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 Blastobacter.
  • 😷 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 1 time in PubMed until 2024-03-28.
  • 🧍 On the Validation List no. 20, the type strain DSM 1111 is incorrectly cited as DSM 111. Publication: . Erratum. Int. J. Syst. Bacteriol. 1989; 39:206.

Parent taxon: Blastobacter Zavarzin 1961 (Approved Lists 1980)

Assigned by: Hirsch P, Müller M. Blastobacter aggregatus sp. nov., Blastobacter capsulatus sp. nov., and Blastobacter denitrificans sp. nov., new budding bacteria from freshwater habitats. Syst. Appl. Microbiol. 1985; 6:281-286.

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Record number: 774080