Plasmids in the Genus Bifidobacterium
Open accessAbstract
A total of 1461 bacterial isolates, representing 24 different species of the genus Bifidobacterium, were examined for the presence of plasmid DNA. Approximately 20% of the isolates contained detectable plasmids, but only four species were presented: B. longum, the predominant bifid species in the human intestine; B. globosum, the most common in animals; and B. asteroides and B. indicum, species found exclusively in the intestines of western and asiatic honey bees, respectively. Multiple plasmids were common among isolates of B. longum and B. asteroides, while all plasmid-bearing isolates of B. globosum and 60% of B. indicum isolates contained only one plasmid each. Certain multiple plasma profiles were predominant among the B. longum and B. asteroides isolates.
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In the absence of characteristic plasmids in B. bifidum, these clusters likely represent episome-derived elements integrated into the chromosome.
“In the absence of characteristic plasmids in B. bifidum , these clusters likely represent episome-derived elements integrated into the chromosome [78-81] .”
From Genome-scale insights into the metabolic landscape and evolutionary development of Bifidobacterium bifidum (2026) · cites this paper as [81]
The Results and Discussion report that plasmids were detected in only four species, not including B. bifidum, while cautioning that failure to detect them does not establish their absence. The paper does not discuss the cited clusters or propose that they are episome-derived elements integrated into the chromosome. Page information was not supplied for the decisive passage. (LLM, conf=0.88)
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Cites
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Selleri, E., Longhi, G., Tarracchini, C., Carolis, E. D., Petraro, S., Mancabelli, L., Milani, C., Turroni, F., Ventura, M., & Lugli, G. A. (2026) · Microbiome Research Reports · doi:10.20517/mrr.2026.19
- Authors
- Sgorbati, B., Scardovi, V., & Leblanc, D. J.
- Affiliations
- University of Bologna (IT)
- National Institutes of Health (US)
- Venue
- Microbiology
- Publisher
- Microbiology Society
- Published
- 1982-09-01
- Volume
- 128
- Issue
- 9
- Pages
- 2121-2131
- ISSN
- 1350-0872 (ISSN-L)
- 1465-2080
- OpenAlex
- W2115939439
- Cited by
- 76
- References
- 17
- Citations by year
- 2026: 1 · 2025: 1 · 2024: 2 · 2022: 4 · 2017: 1 · 2015: 1 · 2014: 2 · 2013: 2 · 2012: 8
- FWCI
- 0.00
- Type
- journal article
- Language
- en
- Open access
- bronze
- doi.org
- Locations
- Microbiology (publishedVersion)
- PubMed (publishedVersion)
- Funders
- Consiglio Nazionale delle Ricerche
- Topics
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Genetics › Bacterial Genetics and Biotechnology
- Life Sciences › Biochemistry, Genetics and Molecular Biology › Molecular Biology › Gut microbiota and health
- Life Sciences › Agricultural and Biological Sciences › Food Science › Probiotics and Fermented Foods
- Keywords
- Bifidobacterium, bacterial plasmids, plasmid DNA, Bifidobacterium longum, Bifidobacterium globosum, Bifidobacterium asteroides, plasmid profiles, human intestinal bacteria
- MeSH terms
- Actinomycetaceae, Animals, DNA, Bacterial, Electrophoresis, Agar Gel, Humans, Plasmids
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