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An age-dependent model to analyse the evolutionary stability of bacterial quorum sensing.
J. Theor. Biol. 405, 104-115 (2016)
Bacterial communication is enabled through the collective release and sensing of signalling molecules in a process called quorum sensing. Cooperative processes can easily be destabilized by the appearance of cheaters, who contribute little or nothing at all to the production of common goods. This especially applies for planktonic cultures. In this study, we analyse the dynamics of bacterial quorum sensing and its evolutionary stability under two levels of cooperation, namely signal and enzyme production. The model accounts for mutation rates and switches between planktonic and biofilm state of growth. We present a mathematical approach to model these dynamics using age-dependent colony models. We explore the conditions under which cooperation is stable and find that spatial structuring can lead to long-term scenarios such as coexistence or bistability, depending on the non-linear combination of different parameters like death rates and production costs.
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Publication type
Article: Journal article
Document type
Scientific Article
Keywords
Age-dependent Models ; Cooperation ; Evolutionary Stability ; Lifestyle Switch ; Quorum Sensing
ISSN (print) / ISBN
0022-5193
e-ISSN
1095-8541
Journal
Journal of Theoretical Biology
Quellenangaben
Volume: 405,
Pages: 104-115
Publisher
Elsevier
Publishing Place
London
Non-patent literature
Publications
Reviewing status
Peer reviewed
Institute(s)
Institute of Computational Biology (ICB)