Obligate mutualistic cooperation limits evolvability

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Titel: Obligate mutualistic cooperation limits evolvability
Autor(en): Pauli, Benedikt
Oña, Leonardo
Hermann, Marita
Kost, Christian
ORCID des Autors: https://orcid.org/0000-0003-0266-4946
Zusammenfassung: Cooperative mutualisms are widespread and play fundamental roles in many ecosystems. Given that these interactions are often obligate, the Darwinian fitness of the participating individuals is not only determined by the information encoded in their own genomes, but also the traits and capabilities of their corresponding interaction partners. Thus, a major outstanding question is how obligate cooperative mutualisms affect the ability of organisms to adapt evolutionarily to changing environmental conditions. Here we address this issue using a mutualistic cooperation between two auxotrophic genotypes of Escherichia coli that reciprocally exchanged costly amino acids. Amino acid-supplemented monocultures and unsupplemented cocultures were exposed to stepwise increasing concentrations of different antibiotics. This selection experiment reveals that metabolically interdependent bacteria are generally less able to adapt to environmental stress than autonomously growing strains. Moreover, obligate cooperative mutualists frequently regain metabolic autonomy, resulting in a collapse of the mutualistic interaction. Together, our results identify a limited evolvability as a significant evolutionary cost that individuals have to pay when entering into an obligate mutualistic cooperation.
Bibliografische Angaben: Pauli, B.; Oña, L.; Hermann, M. and Christian Kost (2022): Obligate mutualistic cooperation limits evolvability. Nat Commun 13, 337.
URL: https://doi.org/10.48693/303
Schlagworte: Coevolution; Experimental evolution; Microbial ecology
Erscheinungsdatum: 17-Jan-2023
Lizenzbezeichnung: Attribution 4.0 International
URL der Lizenz: http://creativecommons.org/licenses/by/4.0/
Publikationstyp: Einzelbeitrag in einer wissenschaftlichen Zeitschrift [Article]
Enthalten in den Sammlungen:FB05 - Hochschulschriften

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