Species Enterococcus flavescens

Classification:

Bacteria Bacillati Bacillota Bacilli Lactobacillales Enterococcaceae Enterococcus Enterococcus flavescens

Name: Enterococcus flavescens Pompei et al. 1992

Category, proposed as: species, sp. nov.

Etymology: fla.ves’cens. L. masc. part. adj. flavescens, becoming yellow

Pronunciation (Latin), gender: en-te-ro-KOK-kus fla-WES-kens, masculine

Type strain: ATCC 49996; CA 2; CCM 4239; CCUG 30567; CECT 4481; CIP 103525; DSM 7370; HAMBI 2233; LMG 13518; NBRC 100679

Conduct genome-based taxonomy at

16S rRNA gene: AJ420802 Analyse FASTA

Valid publication: Pompei R, Berlutti F, Thaller MC, Ingianni A, Cortis G, Dainelli B. Enterococcus flavescens sp. nov., a new species of enterococci of clinical origin. Int J Syst Bacteriol 1992; 42:365-369. 🇮🇹

IJSEM list: Anonymous. Notification list. Notification that new names and new combinations have appeared in volume 42, part 3 of the IJSB. Int J Syst Bacteriol 1992; 42:656.

Nomenclatural status: validly published under the ICNP

Taxonomic status: synonym (and not recommended for medical use)

Correct name: Enterococcus casseliflavus (ex Vaughan et al. 1979) Collins et al. 1984

Risk group: 2

Synonyms:

Name	Kind
Enterococcus casseliflavus (ex Vaughan et al. 1979) Collins et al. 1984	heterotypic synonym, validly published under the ICNP
"Streptococcus casseliflavus" (Mundt and Graham 1968) Vaughan et al. 1979	heterotypic synonym, not validly published
"Streptococcus faecium subsp. casseliflavus" Mundt and Graham 1968	heterotypic synonym, not validly published, distinct rank

Notes:
- ⏲ According to Naser et al. (2006), this species is a later heterotypic synonym of "Streptococcus casseliflavus" (Mundt and Graham 1968) Vaughan et al. 1979. Publication: Naser SM, Vancanneyt M, Hoste B, Snauwaert C, Vandemeulebroecke K, Swings J. Reclassification of Enterococcus flavescens Pompei et al. 1992 as a later synonym of Enterococcus casseliflavus (ex Vaughan et al. 1979) Collins et al. 1984 and Enterococcus saccharominimus Vancanneyt et al. 2004 as a later synonym of Enterococcus italicus Fortina et al. 2004. Int J Syst Evol Microbiol 2006; 56:413-416. 🇧🇪
- ⏲ According to Naser et al. (2006), this species is a later heterotypic synonym of Enterococcus casseliflavus (ex Vaughan et al. 1979) Collins et al. 1984. Publication: Naser SM, Vancanneyt M, Hoste B, Snauwaert C, Vandemeulebroecke K, Swings J. Reclassification of Enterococcus flavescens Pompei et al. 1992 as a later synonym of Enterococcus casseliflavus (ex Vaughan et al. 1979) Collins et al. 1984 and Enterococcus saccharominimus Vancanneyt et al. 2004 as a later synonym of Enterococcus italicus Fortina et al. 2004. Int J Syst Evol Microbiol 2006; 56:413-416. 🇧🇪
- ❗ Enterococcus flavescens is the correct name instead if this species is regarded as a separate species (i.e., if its nomenclatural type is not assigned to another species whose name is validly published, legitimate and not rejected and has priority) within a separate genus Enterococcus.
- 🧬 The phylogenomic assignment score of this taxon is 0.06486 (N = 2).
- 😷 The risk group for Belgium has been imported on 2024-02-05. The full classification is: risk group = 2, note = "human pathogen". — The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 1, note = "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 = 2. — The risk group for Germany has been imported on 2023-10-29. The full classification is: risk group = 2. — The risk group for Taiwan has been imported on 2024-11-03. The full classification is: risk group = 2, note = "P650 = v". — 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 14 times in PubMed until 2026-06-11.
- 🙅 This name is on the List of Recommended Names for bacteria of medical importance (LoRN) as a synonym of the name to be applied to this species. The name is on LoRN because of the recorded risk group of the species itself.
- 🧍 According to Bartlett et al. (2022), this species is an established human pathogen. Publication: Bartlett A, Padfield D, Lear L, Bendall R, Vos M. A comprehensive list of bacterial pathogens infecting humans. Microbiology (Reading) 2022; 168:0. 🇬🇧
- 🧍 In the paper by Pompei et al. 1992 the type strain CCM 4239 is incorrectly cited as CCM 439. Publication: Erratum. Int. J. Syst. Bacteriol. 1993; 43:190. 🇮🇹
- 🧍 The data of Descheemaeker et al. 1997 and the data of several authors suggest that Enterococcus flavescens Pompei et al. 1992 should be considered an Enterococcus casseliflavus [(ex Vaughn et al. 1979) Collins et al. 1984] biovar rather than a separate species. Publication: Descheemaeker P, Lammens C, Pot B, Vandamme P, Goossens H. Evaluation of arbitrarily primed PCR analysis and pulsed-field gel electrophoresis of large genomic DNA fragments for identification of enterococci important in human medicine. Int J Syst Bacteriol 1997; 47:555-561. 🇧🇪

Parent taxon: Enterococcus (ex Thiercelin and Jouhaud 1903) Schleifer and Kilpper-Bälz 1984

Assigned by: Pompei R, Berlutti F, Thaller MC, Ingianni A, Cortis G, Dainelli B. Enterococcus flavescens sp. nov., a new species of enterococci of clinical origin. Int J Syst Bacteriol 1992; 42:365-369. 🇮🇹

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Record number: 775966

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