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The role of recombination dynamics in shaping signatures of direct and indirect selection across the Ficedula flycatcher genome
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Genetics, Evolutionary Biology. Uppsala Univ, Dept Ecol & Genet, S-75236 Uppsala, Sweden.;Swiss Ornithol Inst, CH-6204 Sempach, Switzerland..ORCID iD: 0000-0002-7916-3560
Uppsala Univ, Dept Ecol & Genet, S-75236 Uppsala, Sweden.;Univ Montpellier, CEFE, CNRS, EPHE,IRD, F-34293 Montpellier 5, France..ORCID iD: 0000-0001-8765-1364
Uppsala University, Disciplinary Domain of Science and Technology, Biology, Department of Ecology and Genetics, Evolutionary Biology. Uppsala Univ, Dept Ecol & Genet, S-75236 Uppsala, Sweden.;Univ Lyon 1, Lab Biometry & Evolutionary Biol, CNRS, UMR 5558, F-69622 Villeurbanne, France..
2024 (English)In: Proceedings of the Royal Society of London. Biological Sciences, ISSN 0962-8452, E-ISSN 1471-2954, Vol. 291, no 2015, article id 20232382Article in journal (Refereed) Published
Abstract [en]

Recombination is a central evolutionary process that reshuffles combinations of alleles along chromosomes, and consequently is expected to influence the efficacy of direct selection via Hill-Robertson interference. Additionally, the indirect effects of selection on neutral genetic diversity are expected to show a negative relationship with recombination rate, as background selection and genetic hitchhiking are stronger when recombination rate is low. However, owing to the limited availability of recombination rate estimates across divergent species, the impact of evolutionary changes in recombination rate on genomic signatures of selection remains largely unexplored. To address this question, we estimate recombination rate in two Ficedula flycatcher species, the taiga flycatcher (Ficedula albicilla) and collared flycatcher (Ficedula albicollis). We show that recombination rate is strongly correlated with signatures of indirect selection, and that evolutionary changes in recombination rate between species have observable impacts on this relationship. Conversely, signatures of direct selection on coding sequences show little to no relationship with recombination rate, even when restricted to genes where recombination rate is conserved between species. Thus, using measures of indirect and direct selection that bridge micro- and macro-evolutionary timescales, we demonstrate that the role of recombination rate and its dynamics varies for different signatures of selection.

Place, publisher, year, edition, pages
ROYAL SOC Royal Society, 2024. Vol. 291, no 2015, article id 20232382
Keywords [en]
meiotic recombination, linked selection, direct selection, speciation, Hill-Robertson interference
National Category
Evolutionary Biology Genetics and Genomics
Identifiers
URN: urn:nbn:se:uu:diva-522914DOI: 10.1098/rspb.2023.2382ISI: 001143698500008PubMedID: 38228173OAI: oai:DiVA.org:uu-522914DiVA, id: diva2:1837293
Funder
Swedish Research Council, 2013-8271Knut and Alice Wallenberg Foundation, 2014/0044Swedish National Infrastructure for Computing (SNIC)Swedish Research Council, 2022-06725Swedish Research Council, 2018-05973Available from: 2024-02-13 Created: 2024-02-13 Last updated: 2025-02-01Bibliographically approved

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Chase, MadelineMugal, Carina

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