Name: Pyrococcus yayanosii Birrien et al. 2011

Category: Species

Proposed as: sp. nov.

Etymology: yay.a.no’si.i. N.L. gen. masc. n. yayanosii, of Yayanos, in honour of Aristides Yayanos, a pioneer in the study of piezophilic bacteria

Pronunciation, gender: yay-a-NO-si-i, masculine

Type strain: CH1; JCM 16557

Conduct genome-based taxonomy at

16S rRNA gene: EU682399 Analyse FASTA

Valid publication: Birrien JL, Zeng X, Jebbar M, Cambon-Bonavita MA, Querellou J, Oger P, Bienvenu N, Xiao X, Prieur D. Pyrococcus yayanosii sp. nov., an obligate piezophilic hyperthermophilic archaeon isolated from a deep-sea hydrothermal vent. Int J Syst Evol Microbiol 2011; 61:2827-2831.

IJSEM list: Euzeby JP. Notification list. Notification that new names and new combinations have appeared in volume 61, part 12 of the IJSEM. Int J Syst Evol Microbiol 2012; 62:476-477.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Notes:
  • 😷 The risk group for Germany has been imported on 2023-10-29. 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 25 times in PubMed until 2025-06-04.
  • 🧍 The type strain CH1 is deposited in only one culture collection with the accession number JCM 16557. However, Pyrococcus yayanosii Birrien et al. 2011 is validly published because a committee consisting of the Chairman of the ICSP, the Chairman of the JC of the ICSP and the Editor of the IJSEM has granted an exception in this instance to Rule 27(3) of the Bacteriological Code governing the deposit of type material in two different collections in two different countries. See minutes of the meetings of the International Committee on Systematics of Prokaryotes (ICSP) and its Judicial Commission (JC) in San Francisco in 2005. Publication: Labeda DP, Oren A. International Committee on Systematics of Prokaryotes XIth International (IUMS) Congress of Bacteriology and Applied Microbiology. Minutes of the meetings, 23, 24, 26 and 28 July 2005, San Francisco, CA, USA. Int. J. Syst. Evol. Microbiol. 2008; 58:1746-1752.
  • 🧍 The type strain is also available on request from the "Souchothèque de Bretagne" (catalogue LMBE) culture collection (http://www.ifremer.fr/souchotheque/). Publication: Tindall BJ, De Vos P, Trüper HG. Judicial Commission of the International Committee on Systematics of Prokaryotes XIth International (IUMS) Congress of Bacteriology and Applied Microbiology. Minutes of the meetings, 23, 24 and 27 July 2005, San Francisco, CA, USA. Int. J. Syst. Evol. Microbiol. 2008; 58:1737-1745.

Parent taxon: Pyrococcus Fiala and Stetter 1986

Assigned by: Birrien JL, Zeng X, Jebbar M, Cambon-Bonavita MA, Querellou J, Oger P, Bienvenu N, Xiao X, Prieur D. Pyrococcus yayanosii sp. nov., an obligate piezophilic hyperthermophilic archaeon isolated from a deep-sea hydrothermal vent. Int J Syst Evol Microbiol 2011; 61:2827-2831.

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Record number: 789601