Species Lactobacillus paracasei

Name: Lactobacillus paracasei Collins et al. 1989

Category: Species

Proposed as: sp. nov.

Etymology: pa.ra.ca’se.i. Gr. prep. para, resembling; L. gen. neut. n. casei, a specific epithet; N.L. gen. neut. n. paracasei, resembling Lactobacillus casei

Pronunciation (Latin), gender: lak-to-ba-KIL-lus pa-ra-KA-se-i, masculine

Type strain: ATCC 25302; CCUG 32212; CIP 103918; DSM 20008; DSM 20020; DSM 5622; IFO 15889; JCM 8130; LMG 13087; NBIMCC 8458; NBRC 15889; NCDO 151; NCFB 151; NCIMB 700151

See detailed strain information at

Conduct genome-based taxonomy at

16S rRNA gene: D79212 Analyse FASTA

Valid publication: Collins MD, Phillips BA, Zanoni P. Deoxyribonucleic acid homology studies of Lactobacillus casei, Lactobacillus paracasei sp. nov., subsp. paracasei and subsp. tolerans, and Lactobacillus rhamnosus sp. nov., comb. nov. Int. J. Syst. Bacteriol. 1989; 39:105-108. 🇬🇧

Nomenclatural status: validly published under the ICNP

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

Correct name: Lacticaseibacillus paracasei (Collins et al. 1989) Zheng et al. 2020

Risk group: 1

Synonyms:

Name	Kind
Lacticaseibacillus paracasei (Collins et al. 1989) Zheng et al. 2020	homotypic synonym, validly published under the ICNP

Notes:
- ❗ Lactobacillus paracasei 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 Lactobacillus.
- 😷 The risk group for Canada has been imported on 2024-02-27. The full classification is: risk group = 1, note = "Security sensitive biological agent: No - Terrestrial animal pathogen under Canadian Food Inspection Agency authority: No". — The risk group for Swiss Confederation has been imported on 2024-02-01. 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 1643 times in PubMed until 2026-06-11.
- 🪓 Organisms assigned to this species have previously been classified as Lactobacillus casei (Orla-Jensen 1916) Hansen and Lessel 1971 (Approved Lists 1980). Publication: Hansen PA, Lessel EF. Lactobacillus casei (Orla Jensen) comb. nov. International Journal of Systematic Bacteriology 1971; 21:69-71. Skerman VBD, McGowan V, Sneath PHA. Approved lists of bacterial names. Int J Syst Bacteriol 1980; 30:225-420.
- 🙅 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 other species in the genus.
- 🧍 See the file Some problems with Lactobacillus casei, Lactobacillus paracasei and Lactobacillus zeae. Publication: Hansen PA, Lessel EF. Lactobacillus casei (Orla Jensen) comb. nov. International Journal of Systematic Bacteriology 1971; 21:69-71.

Subdivision:

Number of child taxa with a validly published and correct name: 0
Number of child taxa with a validly published name, including synonyms: 2
Total number of child taxa: 2

Child taxa:

Name	Nomenclatural status	Taxonomic status
Lactobacillus paracasei subsp. paracasei (Collins et al. 1989) Collins et al. 1989	validly published under the ICNP	synonym
Lactobacillus paracasei subsp. tolerans (Abo-Elnaga and Kandler 1965) Collins et al. 1989	validly published under the ICNP	synonym

Parent taxon: Lactobacillus Beijerinck 1901 (Approved Lists 1980)

Assigned by: Collins MD, Phillips BA, Zanoni P. Deoxyribonucleic acid homology studies of Lactobacillus casei, Lactobacillus paracasei sp. nov., subsp. paracasei and subsp. tolerans, and Lactobacillus rhamnosus sp. nov., comb. nov. Int. J. Syst. Bacteriol. 1989; 39:105-108. 🇬🇧

Linking: To permanently link to this page, use https://doi.org/10.83108/rn.784066Link copied to clipboard

Record number: 784066

This LPSN page was printed on 2026-08-19 21:05:33

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Species Lactobacillus paracasei