Name: Lactococcus lactis subsp. lactis (Lister 1873) Schleifer et al. 1986

Category: Subspecies

Proposed as: subsp. nov. (rule 40d)

Basonym: "Bacterium lactis" Lister 1873

Etymology: lac’tis. L. gen. neut. n. lactis, of milk

Gender: masculine

Type strain: ATCC 19435; CCUG 32211; CCUG 7980; CIP 70.56; DSM 20481; HAMBI 1591; JCM 5805; LMG 6890; NBIMCC 4000; NBRC 100933; NCDO 604; NCFB 604; NCIB 6681; NCIMB 6681; NCTC 6681; VKM B-1662

See detailed strain information at

Effective publication: Schleifer KH, Kraus J, Dvorak C, Kilpper-Balz R, Collins MD, Fischer W. Transfer of Streptococcus lactis and related streptococci to the genus Lactococcus gen. nov. Syst. Appl. Microbiol. 1985; 6:183-195.

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: correct name

Risk group: 1

• Synonyms:

  • Name	Kind
    Streptococcus lactis subsp. lactis (Lister 1873) Garvie and Farrow 1982	homotypic synonym, validly published under the ICNP

• Notes:
  • 📠 This subspecies was automatically created by the valid publication of Lactococcus lactis subsp. cremoris (Orla-Jensen 1919) Schleifer et al. 1986 according to rule 40d. Publication: Schleifer KH, Kraus J, Dvorak C, Kilpper-Balz R, Collins MD, Fischer W. Transfer of Streptococcus lactis and related streptococci to the genus Lactococcus gen. nov. Syst. Appl. Microbiol. 1985; 6:183-195.
  • 📠 This subspecies was automatically created by the valid publication of Lactococcus lactis subsp. hordniae (ex Latorre-Guzman et al. 1977) Schleifer et al. 1986 according to rule 40d. Publication: Schleifer KH, Kraus J, Dvorak C, Kilpper-Balz R, Collins MD, Fischer W. Transfer of Streptococcus lactis and related streptococci to the genus Lactococcus gen. nov. Syst. Appl. Microbiol. 1985; 6:183-195.
  • 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 1, note = "biovar diacetylactis: 1 Animal classification RG: 1 - Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No - Containment level: Containment Level 1; default: 1 Animal classification RG: 1 - Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No - Containment level: Containment Level 1". — 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, note = "+".
  • 🧍 Lactococcus lactis subsp. lactis (Lister 1873) Schleifer et al. 1986 encompasses: (1) the strains of Streptococcus lactis subsp. lactis (Lister 1873) Löhnis 1909; (2) the strains of Streptococcus lactis subsp. diacetilactis (ex Matuszewski et al. 1936) Garvie and Farrow 1982; and (3) the strains of Lactobacillus xylosus Kitahara 1938 (Approved Lists 1980). Publication: Kitahara K. Studies in lactic acid-forming bacteria in milk and milk products. Journal of the Agricultural Chemical Society of Japan 1938; 14:1449-1465.
  • 🧍 In Validation List no. 20, Lactococcus lactis subsp. lactis is erroneously cited as Lactococcus lactis subsp. lactis (Löhnis) Schleifer et al. 1986. Publication: Euzeby JP, Kudo T. Corrigenda to the validation lists. Int J Syst Evol Microbiol 2001; 51:1933-1938.

Parent taxon: Lactococcus lactis (Lister 1873) Schleifer et al. 1986

Assigned by: Schleifer KH, Kraus J, Dvorak C, Kilpper-Balz R, Collins MD, Fischer W. Transfer of Streptococcus lactis and related streptococci to the genus Lactococcus gen. nov. Syst. Appl. Microbiol. 1985; 6:183-195.

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Record number: 777424