Convergent shifts in host-associated microbial communities across environmentally elicited phenotypes

Tyler J. Carrier () and Adam M. Reitzel
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Tyler J. Carrier: University of North Carolina at Charlotte
Adam M. Reitzel: University of North Carolina at Charlotte

Nature Communications, 2018, vol. 9, issue 1, 1-9

Abstract: Abstract Morphological plasticity is a genotype-by-environment interaction that enables organisms to increase fitness across varying environments. Symbioses with diverse microbiota may aid in acclimating to this variation, but whether the associated bacteria community is phenotype specific remains understudied. Here we induce morphological plasticity in three species of sea urchin larvae and measure changes in the associated bacterial community. While each host species has unique bacterial communities, the expression of plasticity results in the convergence on a phenotype-specific microbiome that is, in part, driven by differential association with α- and γ-proteobacteria. Furthermore, these results suggest that phenotype-specific signatures are the product of the environment and are correlated with ingestive and digestive structures. By manipulating diet quantity over time, we also show that differentially associating with microbiota along a phenotypic continuum is bidirectional. Taken together, our data support the idea of a phenotype-specific microbial community and that phenotypic plasticity extends beyond a genotype-by-environment interaction.

Date: 2018
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DOI: 10.1038/s41467-018-03383-w

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