The dilution effect limits plasmid horizontal transmission in multispecies bacterial communities.



Kottara, Anastasia ORCID: 0000-0002-7068-1388, Carrilero, Laura, Harrison, Ellie, Hall, James PJ ORCID: 0000-0002-4896-4592 and Brockhurst, Michael A ORCID: 0000-0003-0362-820X
(2021) The dilution effect limits plasmid horizontal transmission in multispecies bacterial communities. Microbiology (Reading, England), 167 (9). 001086-.

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Abstract

By transferring ecologically important traits between species, plasmids drive genomic divergence and evolutionary innovation in their bacterial hosts. Bacterial communities are often diverse and contain multiple coexisting plasmids, but the dynamics of plasmids in multi-species communities are poorly understood. Here, we show, using experimental multi-species communities containing two plasmids, that bacterial diversity limits the horizontal transmission of plasmids due to the 'dilution effect'; this is an epidemiological phenomenon whereby living alongside less proficient host species reduces the expected infection risk for a focal host species. In addition, plasmid horizontal transmission was also affected by plasmid diversity, such that the rate of plasmid conjugation was reduced from co-infected host cells carrying both plasmids. In diverse microbial communities, plasmid spread may be limited by the dilution effect and plasmid-plasmid interactions, reducing the rate of horizontal transmission.

Item Type: Article
Uncontrolled Keywords: Bacteria, Conjugation, Genetic, Gene Transfer, Horizontal, Plasmids
Divisions: Faculty of Health and Life Sciences
Faculty of Health and Life Sciences > Institute of Infection, Veterinary and Ecological Sciences
Depositing User: Symplectic Admin
Date Deposited: 09 Sep 2021 08:17
Last Modified: 15 Mar 2024 14:54
DOI: 10.1099/mic.0.001086
Related URLs:
URI: https://livrepository.liverpool.ac.uk/id/eprint/3136403