Name: Lactococcus Schleifer et al. 1986

Category: Genus

Proposed as: gen. nov.

Etymology: Lac.to.coc’cus. L. neut. n. lac (gen. lactis), milk; N.L. masc. n. coccus, coccus; from Gr. masc. n. kokkos, grain, seed; N.L. masc. n. Lactococcus, milk coccus

Gender, pronunciation (Latin): masculine (stem: Lactococc-), lak-to-KOK-kus

Type species: Lactococcus lactis (Lister 1873) Schleifer et al. 1986

Conduct genome-based taxonomy of genus at TYGS

16S rRNA gene: Analyse FASTA

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: 2

• Synonyms:

  • Name	Kind
    Pseudolactococcus Abe et al. 2025	heterotypic synonym, validly published under the ICNP

• Notes:
  • 🚋 The type species of this genus has alternatively been placed in the genus Lactobacillus Beijerinck 1901 (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.
  • 🚋 The type species of this genus has alternatively been placed in the genus Streptococcus Rosenbach 1884 (Approved Lists 1980). Publication: Löhnis F. Die Benennung der Milchsäurebakterien. Zentralblatt für Bakteriologie, Parasitenkunde, Infektionskrankheiten und Hygiene, Abteilung II 1909; 22:553-555.
  • 🚋 The type species of this genus has alternatively been placed in the genus "Bacterium" Ehrenberg 1831. Publication: Lister J. A further contribution to the natural history of bacteria and the germ theory of fermentative changes. Quarterly Journal of Microbiological Science 1873; 13:380-408.
  • 🙄 This taxon name is occasionally misprinted (or affected by an OCR error) in some sources as: "Laccococcus"; "Laclococcus"; "Lacococcus"; "Lactcoccus"; "Lactoccecus"; "Lactoccocus"; "Lactoceccus"; "Lactococccus"; "Lactococceus"; "Lactocococcus"; "Lactococus"; "Lactotoccus"; "Lacwcoccus"; "Laetococcus"; "Lectoccocus"; "Lmtococcus"; "Loctococcus"; "Zacfococcus"; "Zactococcus".
  • 📧 The e-mail address of the corresponding author given in the effective publication is not functional any more.
  • 🧔 This taxon was discussed in a meeting of a Taxonomic Subcommittee of the ICSP. Publication: Mattarelli P, Felis GE, Holzapfel WH, Franz CMAP. International Committee on Systematics of Prokaryotes, Subcommittee on the taxonomy of Bifidobacterium, Lactobacillus and related organisms. Minutes of open and closed meetings, 19 July 2016, Dublin, Ireland. Int J Syst Evol Microbiol 2019; 69:2172-2173. 🇮🇹
  • 🧔 This taxon was discussed in a meeting of a Taxonomic Subcommittee of the ICSP. Publication: Klein G. International Committee on Systematics of Prokaryotes Subcommittee on the Taxonomy of Bifidobacterium, Lactobacillus and Related Organisms: Minutes of the meetings, 30 August and 1 September 2006, Bologna, Italy. Int. J. Syst. Evol. Microbiol. 2007; 57:1367-1369.
  • 💁 Taxonomists who have recently focused on this group are the corresponding authors of Noda et al. (2020), Chen et al. (2014), Zhu and Gu (2024). Editors in search of reviewers are advised to consider additional criteria such as whether a taxon is covered by one of the ICSP subcommittees.
  • 🎰 The BRCs most frequently used for deposits in this group are: DSM: 21; JCM: 19; NBRC: 12; CCUG: 11; LMG: 9; NCIMB: 7; CIP: 7; ATCC: 7; NBIMCC: 5; HAMBI: 5.
  • 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 2, note = "Animal classification RG: 2 - 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.
  • 🧍 Pittman et al. (1991) suggested the abbreviation "LCCO" for this genus name but this does not appear to be of practical relevance any longer. Publication: Pittman KF, Walczak CA, Lock CM. Codes and abbreviations for approved of effectively published names of genera of bacteria published from January 1980 to December 1990. Int J Syst Bacteriol 1991; 41:571-579.

Subdivision:

Number of child taxa with a validly published and correct name: 16
Number of child taxa with a validly published name, including synonyms: 26
Total number of child taxa: 27

• Child taxa:

  • Name	Nomenclatural status	Taxonomic status
    Lactococcus allomyrinae Heo et al. 2019	validly published under the ICNP	correct name
    Lactococcus carnosus Hilgarth et al. 2020	validly published under the ICNP	synonym
    Lactococcus chungangensis Cho et al. 2008	validly published under the ICNP	synonym
    Lactococcus cremoris (Orla-Jensen 1919) Li et al. 2021	validly published under the ICNP	correct name
    "Lactococcus dextranicus" Beijerinck 1912	not validly published, basonym of name in Approved Lists	synonym
    Lactococcus formosensis Chen et al. 2014	validly published under the ICNP	correct name
    Lactococcus fujiensis Cai et al. 2011	validly published under the ICNP	correct name
    Lactococcus garvieae (Collins et al. 1984) Schleifer et al. 1986	validly published under the ICNP	correct name
    Lactococcus hircilactis Meucci et al. 2015	validly published under the ICNP	correct name
    Lactococcus hodotermopsidis Noda et al. 2020	validly published under the ICNP	synonym
    Lactococcus ileimucosae Afrizal et al. 2023	validly published under the ICNP	correct name
    Lactococcus insecticola Noda et al. 2020	validly published under the ICNP	synonym
    Lactococcus intestinalis Sun et al. 2024	validly published under the ICNP	synonym
    Lactococcus kimchii Pheng et al. 2020	validly published under the ICNP	correct name
    Lactococcus lactis (Lister 1873) Schleifer et al. 1986	validly published under the ICNP	correct name
    Lactococcus laudensis Meucci et al. 2015	validly published under the ICNP	synonym
    Lactococcus muris Afrizal et al. 2023	validly published under the ICNP	correct name
    Lactococcus nasutitermitis Yang et al. 2016	validly published under the ICNP	correct name
    Lactococcus paracarnosus Hilgarth et al. 2020	validly published under the ICNP	synonym
    Lactococcus petauri Goodman et al. 2017	validly published under the ICNP	correct name
    Lactococcus piscium Williams et al. 1990	validly published under the ICNP	synonym
    Lactococcus plantarum (Collins et al. 1984) Schleifer et al. 1986	validly published under the ICNP	synonym
    Lactococcus protaetiae Heo et al. 2023	validly published under the ICNP	correct name
    Lactococcus raffinolactis (Orla-Jensen and Hansen 1932) Schleifer et al. 1988	validly published under the ICNP	synonym
    Lactococcus reticulitermitis Yuki et al. 2018	validly published under the ICNP	correct name
    Lactococcus taiwanensis Chen et al. 2013	validly published under the ICNP	correct name
    Lactococcus termiticola Noda et al. 2018	validly published under the ICNP	correct name

Parent taxon: Streptococcaceae Deibel and Seeley 1974 (Approved Lists 1980)

Assigned by: Schleifer KH, Kraus J, Dvorak C, Kilpper-Bälz 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. 🇩🇪

Linking: To permanently link to this page, use https://lpsn.dsmz.de/genus/lactococcusCopy to clipboardLink copied to clipboard

Record number: 517059