Name: Roseomonas gilardii Rihs et al. 1998

Category: Species

Proposed as: sp. nov.

Etymology: gi.lar’di.i. N.L. gen. masc. n. gilardii, of Gilardi, named after Gerald L. Gilardi, who first described these organisms in 1978

Pronunciation (Latin), gender: … gi-LAR-di-i, feminine

Type strain: 5424; ATCC 49956; CCUG 33005; CIP 104026

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: AF533352 Analyse FASTA

Effective publication: Rihs JD, Brenner DJ, Weaver RE, Steigerwalt AG, Hollis DG, Yu VL. Roseomonas, a new genus associated with bacteremia and other human infections. J Clin Microbiol 1993; 31:3275-3283. 🇺🇸

IJSEM list: Anonymous. Validation list no. 65. Validation of publication of new names and new combinations previously effectively published outside the IJSB. Int J Syst Bacteriol 1998; 48:627.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name (and explicitly recommended for medical use)

Risk group: 2

• Emendations:
  • Sánchez-Porro et al. 2009 Sanchez-Porro C, Gallego V, Busse HJ, Kampfer P, Ventosa A. Transfer of Teichococcus ludipueritiae and Muricoccus roseus to the genus Roseomonas, as Roseomonas ludipueritiae comb. nov. and Roseomonas rosea comb. nov., respectively, and emended description of the genus Roseomonas. Int J Syst Evol Microbiol 2009; 59:1193-1198. 🇪🇸 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.

• Notes:
  • 🥇 Nomenclatural type of the genus Roseomonas Rihs et al. 1998. Publication: Rihs JD, Brenner DJ, Weaver RE, Steigerwalt AG, Hollis DG, Yu VL. Roseomonas, a new genus associated with bacteremia and other human infections. J Clin Microbiol 1993; 31:3275-3283. 🇺🇸
  • 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 2, note = "Animal classification RG: 1 - Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No - Containment level: Containment Level 2". — 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 38 times in PubMed until 2025-06-04.
  • 🙆 This name is on the List of Recommended Names for bacteria of medical importance (LoRN) as the name to be applied to this species. The name is on LoRN because of the recorded risk group of the species itself.
  • 🧍 According to Bartlett et al. (2022), this species is an established human pathogen. Publication: Bartlett A, Padfield D, Lear L, Bendall R, Vos M. A comprehensive list of bacterial pathogens infecting humans. Microbiology (Reading) 2022; 168:0. 🇬🇧
  • 🧍 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. 🇩🇪

Subdivision:

Number of child taxa with a validly published and correct name: 2
Number of child taxa with a validly published name, including synonyms: 2
Total number of child taxa: 2

• Child taxa:

  • Name	Nomenclatural status	Taxonomic status
    Roseomonas gilardii subsp. gilardii (Rihs et al. 1998) Han et al. 2003	validly published under the ICNP	correct name
    Roseomonas gilardii subsp. rosea Han et al. 2003	validly published under the ICNP	correct name

Parent taxon: Roseomonas Rihs et al. 1998

Assigned by: Rihs JD, Brenner DJ, Weaver RE, Steigerwalt AG, Hollis DG, Yu VL. Roseomonas, a new genus associated with bacteremia and other human infections. J Clin Microbiol 1993; 31:3275-3283. 🇺🇸

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Record number: 784823