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Chromosome anchoring in Senegalese sole (Solea senegalensis) reveals sex-associated markers and genome rearrangements in flatfish

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dc.contributor.author Guerrero-Cózar, Israel
dc.contributor.author Gómez-Garrido, Jèssica
dc.contributor.author Berbel, Concha
dc.contributor.author Martinez-Blanch, Juan F.
dc.contributor.author Alioto, Tyler
dc.contributor.author Claros, M. Gonzalo
dc.contributor.author Gagnaire, Pierre-Alexandre
dc.contributor.author Manchado, Manuel
dc.date.accessioned 2021-11-25T06:51:30Z
dc.date.available 2021-11-25T06:51:30Z
dc.date.issued 2021
dc.identifier.citation Guerrero-Cózar I, Gomez-Garrido J, Berbel C, Martinez-Blanch JF, Alioto T, Claros MG, Gagnaire PA, Manchado M. Chromosome anchoring in Senegalese sole (Solea senegalensis) reveals sex-associated markers and genome rearrangements in flatfish. Sci Rep. 2021;11(1):13460. DOI: 10.1038/s41598-021-92601-5
dc.identifier.issn 2045-2322
dc.identifier.uri http://hdl.handle.net/10230/49050
dc.description.abstract The integration of physical and high-density genetic maps is a very useful approach to achieve chromosome-level genome assemblies. Here, the genome of a male Senegalese sole (Solea senegalensis) was de novo assembled and the contigs were anchored to a high-quality genetic map for chromosome-level scaffolding. Hybrid assembled genome was 609.3 Mb long and contained 3403 contigs with a N50 of 513 kb. The linkage map was constructed using 16,287 informative SNPs derived from ddRAD sequencing in 327 sole individuals from five families. Markers were assigned to 21 linkage groups with an average number of 21.9 markers per megabase. The anchoring of the physical to the genetic map positioned 1563 contigs into 21 pseudo-chromosomes covering 548.6 Mb. Comparison of genetic and physical distances indicated that the average genome-wide recombination rate was 0.23 cM/Mb and the female-to-male ratio 1.49 (female map length: 2,698.4 cM, male: 2,036.6 cM). Genomic recombination landscapes were different between sexes with crossovers mainly concentrated toward the telomeres in males while they were more uniformly distributed in females. A GWAS analysis using seven families identified 30 significant sex-associated SNP markers located in linkage group 18. The follicle-stimulating hormone receptor appeared as the most promising locus associated with sex within a region with very low recombination rates. An incomplete penetrance of sex markers with males as the heterogametic sex was determined. An interspecific comparison with other Pleuronectiformes genomes identified a high sequence similarity between homologous chromosomes, and several chromosomal rearrangements including a lineage-specific Robertsonian fusion in S. senegalensis.
dc.description.sponsorship This study was funded by project RTA2017-00054-C03-01 and RTA2017-00054-C03-funded from MCIU/AEI/FEDER, UE and cofunded 80% by Programa Operativo FEDER de Andalucía 2014-2020, project PP.AVA.AVA201601.9 SOLEALGAE. Moreover, the study has received funding from EU H2020 research and innovation program under grant agreement 817992 ERANET-BLUEBIO COFUND project PCI2020-111994 BestBrood/AEI/10.13039/501100011033. IGC is funded by a predoctoral fellowship from INIA. This work would not have been possible without the computer resources and the technical support provided by the Plataforma Andaluza de Bioinformática of the University of Málaga and CNAG.
dc.format.mimetype application/pdf
dc.language.iso eng
dc.publisher Nature Research
dc.relation.ispartof Sci Rep. 2021;11(1):13460
dc.rights © The Author(s) 2021. Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
dc.rights.uri http://creativecommons.org/licenses/by/4.0/
dc.title Chromosome anchoring in Senegalese sole (Solea senegalensis) reveals sex-associated markers and genome rearrangements in flatfish
dc.type info:eu-repo/semantics/article
dc.identifier.doi http://dx.doi.org/10.1038/s41598-021-92601-5
dc.subject.keyword Animal breeding
dc.subject.keyword Genomics
dc.relation.projectID info:eu-repo/grantAgreement/EC/H2020/817992
dc.relation.projectID info:eu-repo/grantAgreement/ES/2PE/RTA2017-00054-C03-01
dc.rights.accessRights info:eu-repo/semantics/openAccess
dc.type.version info:eu-repo/semantics/publishedVersion


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