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Cooperation increases robustness to ecological disturbance in microbial cross-feeding networks

View ORCID ProfileLeonardo Oña, Christian Kost
doi: https://doi.org/10.1101/2020.05.15.098103
Leonardo Oña
1Department of Ecology, School of Biology/Chemistry, Osnabrück University, Osnabrück, Germany
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Christian Kost
1Department of Ecology, School of Biology/Chemistry, Osnabrück University, Osnabrück, Germany
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  • For correspondence: christiankost@gmail.com
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Abstract

Microorganisms mainly exist within complex networks of ecological interactions. Given that the growth and survival of community members frequently depend on an obligate exchange of essential metabolites, it is generally unclear how such communities can persist despite the destabilizing force of ecological disturbance. Here we address this issue using a population dynamics model. In contrast to previous work that suggests the potential for obligate interaction networks to evolve is limited, we find the opposite pattern: natural selection in the form of ecological disturbance favors both specific network topologies and cooperative cross-feeding among community members. These results establish environmental selection as a key driver shaping the architecture of microbial interaction networks.

Competing Interest Statement

The authors have declared no competing interest.

Footnotes

  • ↵* E-mail: leonardoxona{at}gmail.com; phone: +49 541 969 2255

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The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. All rights reserved. No reuse allowed without permission.
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Posted May 16, 2020.
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Cooperation increases robustness to ecological disturbance in microbial cross-feeding networks
Leonardo Oña, Christian Kost
bioRxiv 2020.05.15.098103; doi: https://doi.org/10.1101/2020.05.15.098103
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Cooperation increases robustness to ecological disturbance in microbial cross-feeding networks
Leonardo Oña, Christian Kost
bioRxiv 2020.05.15.098103; doi: https://doi.org/10.1101/2020.05.15.098103

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