ArticleApplied and environmental microbiology2014
The plasmid complement of Lactococcus lactis UC509.9 encodes multiple bacteriophage resistance systems.
Article in Applied and environmental microbiology, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 9 papers.
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Who cites it
9 citing papers in PubMed, 24 citations in OpenAlex.
- Advances in Genetic Transformation of Lactic Acid Bacteria: Overcoming Barriers and Enhancing Plasmid Tools.International journal of molecular sciences · 2025Review
- Lactococcal mobile genetic elements harbour a diverse phage defensome rich in restriction-modification systems.Nucleic acids research · 2025Article
- A Plasmid-Encoded Surface Polysaccharide Partly BlocksInternational journal of molecular sciences · 2025Article
- Transcriptional control of two distinct lactococcal plasmid-encoded conjugation systems.Current research in microbial sciences · 2024Article
- TheFrontiers in microbiology · 2019Article
- Article
- Plasmids from Food Lactic Acid Bacteria: Diversity, Similarity, and New Developments.International journal of molecular sciences · 2015Review
- Methyltransferases acquired by lactococcal 936-type phage provide protection against restriction endonuclease activity.BMC genomics · 2014Article
- Next-generation sequencing as an approach to dairy starter selection.Dairy science & technologyReview
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Authors and funding
3 authors at 1 institution in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Lactococcus lactis subsp. cremoris strains are used globally for the production of fermented dairy products, particularly hard cheeses. Believed to be of plant origin, L. lactis strains that are used as starter cultures have undergone extensive adaptation to the dairy environment, partially through the acquisition of extrachromosomal DNA in the form of plasmids that specify technologically important phenotypic traits. Here, we present a detailed analysis of the eight plasmids of L. lactis UC509.9, an Irish dairy starter strain. Key industrial phenotypes were mapped, and genes that are typically associated with lactococcal plasmids were identified. Four distinct, plasmid-borne bacteriophage resistance systems were identified, including two abortive infection systems, AbiB and AbiD1, thereby supporting the observed phage resistance of L. lactis UC509.9. AbiB escape mutants were generated for phage sk1, which were found to carry mutations in orf6, which encodes the major capsid protein of this phage.
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