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Non-Local Interaction via Diffusible Resource Prevents Coexistence of Cooperators and Cheaters in a Lattice Model

Author(s): Borenstein, David Bruce; Meir, Yigal; Shaevitz, Joshua W; Wingreen, Ned S

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Abstract: Many cellular populations cooperate through the secretion of diffusible extracellular resources, such as digestive enzymes or virulence factors. Diffusion of these resources leads to long-range intercellular interactions, creating the possibility of cooperation but also the risk of exploitation by non-producing neighbors. In the past, considerable attention has been given to game-theoretic lattice models of intercellular cooperation. In these models, coexistence is commonly observed between cooperators (corresponding to resource producers) and cheaters (corresponding to nonproducers). However, these models consider only interactions between direct competitors. We find that when individuals are allowed to interact non-locally through the diffusion of a shared resource coexistence between cooperators and cheaters is lost. Instead, we find population dynamics similar to simple competition, either neutral or biased, with no balancing selection that would favor coexistence. Our results highlight the importance of an accurate treatment of diffusion of shared resources and argue against the generality of the conclusions of game-theoretic lattice models.
Publication Date: 17-May-2013
Electronic Publication Date: 17-May-2013
Citation: Borenstein, David Bruce, Meir, Yigal, Shaevitz, Joshua W, Wingreen, Ned S. (2013). Non-Local Interaction via Diffusible Resource Prevents Coexistence of Cooperators and Cheaters in a Lattice Model. PLoS ONE, 8 (5), e63304 - e63304. doi:10.1371/journal.pone.0063304
DOI: doi:10.1371/journal.pone.0063304
EISSN: 1932-6203
Pages: e63304 - e63304
Type of Material: Journal Article
Journal/Proceeding Title: PLoS ONE
Version: Final published version. This is an open access article.



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