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  Repeatable ecological dynamics govern the response of experimental communities to antibiotic pulse perturbation

Cairns, J., Jokela, R., Becks, L., Mustonen, V., & Hiltunen, T. (2020). Repeatable ecological dynamics govern the response of experimental communities to antibiotic pulse perturbation. Nature Ecology & Evolution, 4, 1385-1394. doi:10.1038/s41559-020-1272-9.

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Cairns, Johannes, Author
Jokela, Roosa, Author
Becks, Lutz1, 2, Author              
Mustonen, Ville, Author
Hiltunen, Teppo, Author
Affiliations:
1Research Group Community Dynamics, Department Evolutionary Ecology, Max Planck Institute for Evolutionary Biology, Max Planck Society, ou_1445642              
2External, ou_persistent22              

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 Abstract: In an era of pervasive anthropogenic ecological disturbances, there is a pressing need to understand the factors that constitute community response and resilience. A detailed understanding of disturbance response needs to go beyond associations and incorporate features of disturbances, species traits, rapid evolution and dispersal. Multispecies microbial communities that experience antibiotic perturbation represent a key system with important medical dimensions. However, previous microbiome studies on this theme have relied on high-throughput sequencing data from uncultured species without the ability to explicitly account for the role of species traits and immigration. Here, we serially passage a 34-species defined bacterial community through different levels of pulse antibiotic disturbance, manipulating the presence or absence of species immigration. To understand the ecological community response measured using amplicon sequencing, we combine initial trait data measured for each species separately and metagenome sequencing data revealing adaptive mutations during the experiment. We found that the ecological community response was highly repeatable within the experimental treatments, which could be attributed in part to key species traits (antibiotic susceptibility and growth rate). Increasing antibiotic levels were also coupled with an increasing probability of species extinction, making species immigration critical for community resilience. Moreover, we detected signals of antibiotic-resistance evolution occurring within species at the same time scale, leaving evolutionary changes in communities despite recovery at the species compositional level. Together, these observations reveal a disturbance response that presents as classic species sorting, but is nevertheless accompanied by rapid within-species evolution.

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Language(s): eng - English
 Dates: 2020-03-102020-07-032020-08-102020-10
 Publication Status: Published in print
 Pages: -
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 Table of Contents: -
 Rev. Type: -
 Identifiers: DOI: 10.1038/s41559-020-1272-9
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Title: Nature Ecology & Evolution
  Abbreviation : Nat. Ecol. Evol.
Source Genre: Journal
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Publ. Info: London : Nature Publishing Group
Pages: - Volume / Issue: 4 Sequence Number: - Start / End Page: 1385 - 1394 Identifier: ISSN: 2397-334X
CoNE: https://pure.mpg.de/cone/journals/resource/2397-334X