Name: Thermus thermophilus (ex Oshima and Imahori 1974) Manaia et al. 1995

Category: Species

Proposed as: sp. nov., nom. rev.

Etymology: ther.mo’phi.lus. Gr. fem. adj. thermê, heat; N.L. masc. adj. suff. -philus, friend, loving; from Gr. masc. adj. philos, on; N.L. masc. adj. thermophilus, heat-loving

Gender: masculine

Type strain: ATCC 27634; HB8; JCM 10941; NBRC 101084; NCIB 11244; NCIMB 11244

Conduct genome-based taxonomy at

16S rRNA gene: X07998 Analyse FASTA

Effective publication: Manaia CM, Hoste B, Gutierrez MC, Gillis M, Ventosa A, Kersters K, Da Costa MS. Halotolerant Thermus strains from marine and terrestrial hot springs belong to Thermus thermophilus (ex Oshima and Imahori, 1974) nom. rev. emend. Syst. Appl. Microbiol. 1994; 17:526-532.

IJSEM list: Anonymous. Validation list no. 54. Validation of publication of new names and new combinations previously effectively published outside the IJSB. Int J Syst Bacteriol 1995; 45:619-620.

Nomenclatural status: validly published under the ICNP

Taxonomic status: correct name

Risk group: 1

• Synonyms:

  • Name	Kind
    "Thermus thermophilus" Oshima and Imahori 1974	homotypic synonym, not validly published
    "Thermus thermophilus" (ex Oshima and Imahori 1974) Williams et al. 1995	homotypic synonym, not validly published

• Emendations:
  • García-López et al. 2019 Garcia-Lopez M, Meier-Kolthoff JP, Tindall BJ, Gronow S, Woyke T, Kyrpides NC, Hahnke RL, Goker M. Analysis of 1,000 Type-Strain Genomes Improves Taxonomic Classification of Bacteroidetes. Front Microbiol 2019; 10:2083. Oren A, Garrity GM. List of changes in taxonomic opinion no. 32. Notification of changes in taxonomic opinion previously published outside the IJSEM. Int J Syst Evol Microbiol 2020; 70:4061-4090.

• Notes:
  • The phylogenomic assignment score of this taxon is 0.21344 (N = 1).
  • According to Rule 24b(2), Thermus thermophilus (ex Oshima and Imahori 1974) Williams et al. 1995 has priority over Thermus thermophilus (ex Oshima and Imahori 1974) Manaia et al. 1995. However, Williams et al. 1995 proposed the name Thermus thermophilus as valid only in the abstract of the publication without a formal proposal in the text, and did not present phenotypic results showing that the species could be distinguished from other species of the genus Thermus. For these reasons, the publication by Manaia et al. 1994 is considered the effective publication for the revival of the species Thermus thermophilus and the Validation List no. 54 is considered as the valid publication. Publication: De Vos P, Trüper HG, Tindall BJ. Judicial Commission of the International Committee on Systematics of Prokaryotes Xth International (IUMS) Congress of Bacteriology and Applied Microbiology. Minutes of the meetings, 28, 29 and 31 July and 1 August 2002, Paris, France. Int. J. Syst. Evol. Microbiol. 2005; 55:525-532.
  • In Validation List no. 54, Thermus thermophilus (ex Oshima and Imahori 1974) Manaia et al. 1995 is erroneously proposed as a new combination. Publication: Euzeby JP, Kudo T. Corrigenda to the validation lists. Int J Syst Evol Microbiol 2001; 51:1933-1938.
  • In Validation List no. 54, the type strain HB8 is cited as HB-8. Publication: Da Costa MS, Nobre MF, Rainey FA. Genus I. Thermus Brock and Freeze 1969, 295AL emend. Nobre, Trüper and da Costa 1996b, 605. In: Boone DR, Castenholz RW, Garrity GM (eds), Bergey's Manual of Systematic Bacteriology, second edition, vol. 1 (The Archaea and the deeply branching and phototrophic Bacteria), Springer-Verlag, New York, 2001, p. 404-414.

Parent taxon: Thermus Brock and Freeze 1969 (Approved Lists 1980)

Assigned by: Manaia CM, Hoste B, Gutierrez MC, Gillis M, Ventosa A, Kersters K, Da Costa MS. Halotolerant Thermus strains from marine and terrestrial hot springs belong to Thermus thermophilus (ex Oshima and Imahori, 1974) nom. rev. emend. Syst. Appl. Microbiol. 1994; 17:526-532.

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Record number: 7151