Name: Pirellula staleyi (Starr et al. 1983) Schlesner and Hirsch 1987

Category: Species

Proposed as: comb. nov.

Basonym: Planctomyces staleyi Starr et al. 1983

Etymology: sta.ley’i. N.L. gen. masc. n. staleyi, of Staley, named after James T. Staley, who isolated strain ATCC 27377, under the name Pasteuria ramosa

Pronunciation (Latin), gender: pi-REL-lu-la sta-LEY-i, feminine

Type strain: ATCC 27377; DSM 6068; DSM 940; ICPB 2138; Staley “Michigan strain”

Conduct genome-based taxonomy at

16S rRNA gene: AJ231183 Analyse FASTA

Valid publication: Schlesner H, Hirsch P. Rejection of the genus name Pirella for pear-shaped budding bacteria and proposal to create the genus Pirellula gen. nov. Int. J. Syst. Bacteriol. 1987; 37:441. 🇩🇪

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Synonyms:

  • Name	Kind
    Pirella staleyi (Starr et al. 1983) Schlesner and Hirsch 1984	homotypic synonym, validly published under the ICNP, illegitimate name
    Planctomyces staleyi Starr et al. 1983	homotypic synonym, validly published under the ICNP

• Emendations:
  • Hahnke et al. 2016 Hahnke RL, Meier-Kolthoff JP, Garcia-Lopez M, Mukherjee S, Huntemann M, Ivanova NN, Woyke T, Kyrpides NC, Klenk HP, Goker M. Genome-Based Taxonomic Classification of Bacteroidetes. Front Microbiol 2016; 7:2003. 🇩🇪 Oren A, Garrity GM. List of changes in taxonomic opinion no. 26. Notification of changes in taxonomic opinion previously published outside the IJSEM. Int J Syst Evol Microbiol 2017; 67:2081-2086.

• Notes:
  • 🥇 Nomenclatural type of the genus Pirellula Schlesner and Hirsch 1987. Publication: Schlesner H, Hirsch P. Rejection of the genus name Pirella for pear-shaped budding bacteria and proposal to create the genus Pirellula gen. nov. Int. J. Syst. Bacteriol. 1987; 37:441. 🇩🇪
  • 😷 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 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 11 times in PubMed until 2026-06-11.
  • 🧍 The genome of the type strain was sequenced as part of the GEBA (Genomic Encyclopedia of Bacteria and Archaea) project. Publication: Clum A, Tindall BJ, Sikorski J, Ivanova N, Mavrommatis K, Lucas S, Glavina T, Del Rio, Nolan M, Chen F, et al. Complete genome sequence of Pirellula staleyi type strain (ATCC 27377). Stand Genomic Sci 2009; 1:308-316. 🇺🇸
  • 🧍 Replacement of the illegitimate name Pirella staleyi Schlesner and Hirsch 1984, which was illegitimate because of precedence of the fungal genus Pirella Bainier 1883 [Rule 51b(4)]. The strain ATCC 27377 DSM 6068 was previously the type strain of Pasteuria ramosa Metchnikoff 1888 (Approved Lists 1980). Publication: Schlesner H, Hirsch P. Assignment of ATCC 27377 to Pirella gen. nov. as Pirella staleyi comb. nov. Int. J. Syst. Bacteriol. 1984; 34:492-495. 🇩🇪
  • 🧍 The strain ATCC 27377 = DSM 6068 was previously the type strain of Pasteuria ramosa Metchnikoff 1888 (Approved Lists 1980). Publication: Metchnikoff E. Pasteuria ramosa un représentant des bactéries à division longitudinale. Annales de l'Institut Pasteur (Paris) 1888; 2:165-170.

Parent taxon: Pirellula Schlesner and Hirsch 1987

Assigned by: Schlesner H, Hirsch P. Rejection of the genus name Pirella for pear-shaped budding bacteria and proposal to create the genus Pirellula gen. nov. Int. J. Syst. Bacteriol. 1987; 37:441. 🇩🇪

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Record number: 779640