Journal article

Adaptive Evolution of Geobacter sulfurreducens in Coculture with Pseudomonas aeruginosa

Lucie Semenec, Ismael A Vergara, Andrew E Lalock, Steve Petrovski, Philip L Bond, Ashley E Franks

mBio | AMER SOC MICROBIOLOGY | Published : 2020

Abstract

Interactions between microorganisms in mixed communities are highly complex, being either syntrophic, neutral, predatory, or competitive. Evolutionary changes can occur in the interaction dynamics between community members as they adapt to coexistence. Here, we report that the syntrophic interaction between Geobacter sulfurreducens and Pseudomonas aeruginosa coculture change in their dynamics over evolutionary time. Specifically, Geobacter sp. dominance increases with adaptation within the cocultures, as determined through quantitative PCR and fluorescence in situ hybridization. This suggests a transition from syntrophy to competition and demonstrates the rapid adaptive capacity of Geobacter..

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Grants

Awarded by Defense Science and Technology Group (DSTG), Office of Naval Research Global


Awarded by Asian Office of Aerospace Research and Development (AOARD)


Awarded by Australian Research Council (ARC)


Funding Acknowledgements

This research has been partially financially supported by the Human Protection and Performance Program of the Defense Science Institute. The Applied and Environmental Microbiology Laboratory receives support from the Defense Science and Technology Group (DSTG), Office of Naval Research Global (award N626909-13-1-N259), Asian Office of Aerospace Research and Development (AOARD; award FA2386-14-1-4032), and the Australian Research Council (ARC; award LP140100459).