The recombination landscape of the barn owl, from families to populations.

Autor:	Topaloudis A; Department of Ecology and Evolution, University of Lausanne, Lausanne 1011, Switzerland.; Swiss Institute of Bioinformatics, Lausanne 1011, Switzerland., Cumer T; Department of Ecology and Evolution, University of Lausanne, Lausanne 1011, Switzerland.; Swiss Institute of Bioinformatics, Lausanne 1011, Switzerland., Lavanchy E; Department of Ecology and Evolution, University of Lausanne, Lausanne 1011, Switzerland.; Swiss Institute of Bioinformatics, Lausanne 1011, Switzerland., Ducrest AL; Department of Ecology and Evolution, University of Lausanne, Lausanne 1011, Switzerland., Simon C; Department of Ecology and Evolution, University of Lausanne, Lausanne 1011, Switzerland., Machado AP; Department of Ecology and Evolution, University of Lausanne, Lausanne 1011, Switzerland., Paposhvili N; Ilia State University, Tbilisi 0162, Georgia., Roulin A; Department of Ecology and Evolution, University of Lausanne, Lausanne 1011, Switzerland., Goudet J; Department of Ecology and Evolution, University of Lausanne, Lausanne 1011, Switzerland.; Swiss Institute of Bioinformatics, Lausanne 1011, Switzerland.
Jazyk:	angličtina
Zdroj:	Genetics [Genetics] 2024 Nov 15. Date of Electronic Publication: 2024 Nov 15.
DOI:	10.1093/genetics/iyae190
Abstrakt:	Homologous recombination is a meiotic process that generates diversity along the genome and interacts with all evolutionary forces. Despite its importance, studies of recombination landscapes are lacking due to methodological limitations and limited data. Frequently used approaches include linkage mapping based on familial data that provides sex-specific broad-scale estimates of realized recombination and inferences based on population LD that reveal a more fine scale resolution of the recombination landscape, albeit dependent on the effective population size and the selective forces acting on the population. In this study, we use a combination of these two methods to elucidate the recombination landscape for the Afro-European barn owl (Tyto alba). We find subtle differences in crossover placement between sexes that leads to differential effective shuffling of alleles. LD based estimates of recombination are concordant with family-based estimates and identify large variation in recombination rates within and among linkage groups. Larger chromosomes show variation in recombination rates, while smaller chromosomes have a universally high rate which shapes the diversity landscape. We find that recombination rates are correlated with gene content, genetic diversity and GC content. We find no conclusive differences in the recombination landscapes between populations. Overall, this comprehensive analysis enhances our understanding of recombination dynamics, genomic architecture, and sex-specific variation in the barn owl, contributing valuable insights to the broader field of avian genomics. (© The Author(s) 2024. Published by Oxford University Press on behalf of The Genetics Society of America.)
Databáze:	MEDLINE
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