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Environmental specificity in Drosophila-bacteria symbiosis affects host developmental plasticity

View ORCID ProfileRobin Guilhot, View ORCID ProfileAntoine Rombaut, Anne Xuéreb, View ORCID ProfileKate Howell, View ORCID ProfileSimon Fellous
doi: https://doi.org/10.1101/717702
Robin Guilhot
1CBGP, INRA, CIRAD, IRD, Montpellier SupAgro, Univ Montpellier, Montpellier, France
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  • For correspondence: robin.guilhot@inra.fr
Antoine Rombaut
1CBGP, INRA, CIRAD, IRD, Montpellier SupAgro, Univ Montpellier, Montpellier, France
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  • ORCID record for Antoine Rombaut
Anne Xuéreb
1CBGP, INRA, CIRAD, IRD, Montpellier SupAgro, Univ Montpellier, Montpellier, France
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Kate Howell
2Faculty of Veterinary and Agricultural Sciences, University of Melbourne, Parkville, Vic 3010, Australia
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Simon Fellous
1CBGP, INRA, CIRAD, IRD, Montpellier SupAgro, Univ Montpellier, Montpellier, France
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ABSTRACT

Environmentally acquired microbial symbionts could contribute to host adaptation to local conditions like vertically transmitted symbionts do. This scenario necessitates symbionts to have different effects in different environments. We investigated this idea in Drosophila melanogaster, a species which communities of bacterial symbionts vary greatly among environments. We isolated four bacterial strains isolated from the feces of a D. melanogaster laboratory strain and tested their effects in two conditions: the ancestral environment (i.e. the laboratory medium) and a new environment (i.e. fresh fruit with live yeast). All bacterial effects on larval and adult traits differed among environments, ranging from very beneficial to marginally deleterious. The joint analysis of larval development speed and adult size further shows bacteria affected developmental plasticity more than resource acquisition. This effect was largely driven by the contrasted effects of the bacteria in each environment. Our study illustrates that understanding D. melanogaster symbiotic interactions in the wild will necessitate working in ecologically realistic conditions. Besides, context-dependent effects of symbionts, and their influence on host developmental plasticity, shed light on how environmentally acquired symbionts may contribute to host evolution.

Footnotes

  • This version of the manuscript has been peer-reviewed and is recommended by Peer Community In Evolutionary Biology (https://doi.org/10.24072/pci.evolbiol.100085).

  • https://zenodo.org/record/2554194#.XdKl8HtCfIU

  • https://zenodo.org/record/3352230#.XdKmKXtCfIU

Copyright 
The copyright holder for this preprint is the author/funder, who has granted bioRxiv a license to display the preprint in perpetuity. It is made available under a CC-BY-NC-ND 4.0 International license.
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Posted November 19, 2019.
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Environmental specificity in Drosophila-bacteria symbiosis affects host developmental plasticity
Robin Guilhot, Antoine Rombaut, Anne Xuéreb, Kate Howell, Simon Fellous
bioRxiv 717702; doi: https://doi.org/10.1101/717702
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Environmental specificity in Drosophila-bacteria symbiosis affects host developmental plasticity
Robin Guilhot, Antoine Rombaut, Anne Xuéreb, Kate Howell, Simon Fellous
bioRxiv 717702; doi: https://doi.org/10.1101/717702

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