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Bacterial Adaptation to the Host's Diet Is a Key Evolutionary Force Shaping Drosophila-Lactobacillus Symbiosis.
Martino, Maria Elena Joncour, Pauline Leenay, Ryan Gervais, Hugo Shah, Malay Hughes, Sandrine Gillet, Benjamin Beisel, Chase Leulier, François
Martino, Maria Elena
Joncour, Pauline
Leenay, Ryan
Gervais, Hugo
Shah, Malay
Hughes, Sandrine
Gillet, Benjamin
Beisel, Chase
Leulier, François
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2018-07-11
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Abstract
Animal-microbe facultative symbioses play a fundamental role in ecosystem and organismal health. Yet, due to the flexible nature of their association, the selection pressures that act on animals and their facultative symbionts remain elusive. Here we apply experimental evolution to Drosophila melanogaster associated with its growth-promoting symbiont Lactobacillus plantarum, representing a well-established model of facultative symbiosis. We find that the diet of the host, rather than the host itself, is a predominant driving force in the evolution of this symbiosis. Furthermore, we identify a mechanism resulting from the bacterium's adaptation to the diet, which confers growth benefits to the colonized host. Our study reveals that bacterial adaptation to the host's diet may be the foremost step in determining the evolutionary course of a facultative animal-microbe symbiosis.
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Cell Host Microbe. 2018 Jul 11;24(1):109-119.e6. doi: 10.1016/j.chom.2018.06.001 Epub 2018 Jun 28
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en
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1934-6069
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Attribution-NonCommercial-ShareAlike 4.0 International