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The Relationship Between Microbiomes and Selective Regimes in the Sponge Genus Ircinia

The Relationship Between Microbiomes and Selective Regimes in the Sponge Genus Ircinia

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KELLY, Joseph B., David E. CARLSON, Jun Siong LOW, Tyler RICE, Robert W. THACKER, 2021. The Relationship Between Microbiomes and Selective Regimes in the Sponge Genus Ircinia. In: Frontiers in Microbiology. Frontiers Media. 12, 607289. eISSN 1664-302X. Available under: doi: 10.3389/fmicb.2021.607289

@article{Kelly2021Relat-53382, title={The Relationship Between Microbiomes and Selective Regimes in the Sponge Genus Ircinia}, year={2021}, doi={10.3389/fmicb.2021.607289}, volume={12}, journal={Frontiers in Microbiology}, author={Kelly, Joseph B. and Carlson, David E. and Low, Jun Siong and Rice, Tyler and Thacker, Robert W.}, note={Article Number: 607289} }

2021-04-15T07:20:58Z eng Sponges are often densely populated by microbes that benefit their hosts through nutrition and bioactive secondary metabolites; however, sponges must simultaneously contend with the toxicity of microbes and thwart microbial overgrowth. Despite these fundamental tenets of sponge biology, the patterns of selection in the host sponges' genomes that underlie tolerance and control of their microbiomes are still poorly understood. To elucidate these patterns of selection, we performed a population genetic analysis on multiple species of Ircinia from Belize, Florida, and Panama using an F <sub>ST</sub> -outlier approach on transcriptome-annotated RADseq loci. As part of the analysis, we delimited species boundaries among seven growth forms of Ircinia. Our analyses identified balancing selection in immunity genes that have implications for the hosts' tolerance of high densities of microbes. Additionally, our results support the hypothesis that each of the seven growth forms constitutes a distinct Ircinia species that is characterized by a unique microbiome. These results illuminate the evolutionary pathways that promote stable associations between host sponges and their microbiomes, and that potentially facilitate ecological divergence among Ircinia species. Kelly, Joseph B. Low, Jun Siong Thacker, Robert W. 2021-04-15T07:20:58Z Carlson, David E. The Relationship Between Microbiomes and Selective Regimes in the Sponge Genus Ircinia Kelly, Joseph B. Rice, Tyler Thacker, Robert W. Attribution 4.0 International Low, Jun Siong 2021 Rice, Tyler Carlson, David E.

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