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dc.contributor.authorBrennan, Adrian C.
dc.contributor.authorHiscock, Simon J.
dc.contributor.authorAbbott, Richard John
dc.date.accessioned2019-02-21T10:30:05Z
dc.date.available2019-02-21T10:30:05Z
dc.date.issued2019-02
dc.identifier.citationBrennan , A C , Hiscock , S J & Abbott , R J 2019 , ' Completing the hybridization triangle : the inheritance of genetic incompatibilities during homoploid hybrid speciation in ragworts ( Senecio ). ' , AoB Plants , vol. 11 , no. 1 , ply078 . https://doi.org/10.1093/aobpla/ply078en
dc.identifier.issn2041-2851
dc.identifier.otherPURE: 257807677
dc.identifier.otherPURE UUID: 6df245b1-dc0c-481c-93f8-6072217be8a6
dc.identifier.otherWOS: 000469435200007
dc.identifier.otherScopus: 85064093929
dc.identifier.urihttp://hdl.handle.net/10023/17115
dc.descriptionFunding: UK Natural Environment Research Council (NERC) grant NE/D014166/1 (RJA).en
dc.description.abstractA new homoploid hybrid lineage needs to establish a degree of reproductive isolation from its parent species if it is to persist as an independent entity, but the role hybridization plays in this process is known in only a handful of cases. The homoploid hybrid ragwort species, Senecio squalidus (Oxford ragwort), originated following the introduction of hybrid plants to the UK approximately 320 years ago. The source of the hybrid plants was from a naturally occurring hybrid zone between S. aethnensis and S. chrysanthemifolius on Mount Etna, Sicily. Previous studies of the parent species found evidence for multiple incompatibility loci causing transmission ratio distortion of genetic markers in their hybrid progeny. This study closes the hybridization triangle by reporting a genetic mapping analysis of the remaining two paired cross combinations between S. squalidus and its parents. Genetic maps produced from F2 mapping families were generally collinear but with half of the linkage groups showing evidence of genomic reorganization between genetic maps. The new maps produced from crosses between S. squalidus and each parent showed multiple incompatibility loci distributed across the genome, some of which co-locate with previously reported incompatibility loci between the parents. These findings suggest that this young homoploid hybrid species has inherited a unique combination of genomic rearrangements and incompatibilities from its parents that contribute to its reproductive isolation.
dc.format.extent15
dc.language.isoeng
dc.relation.ispartofAoB Plantsen
dc.rights© The Authors 2019. Published by Oxford University Press on behalf of the Annals of Botany Company. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0/), which permits unrestricted reuse, distribution, and reproduction in any medium, provided the original work is properly cited.en
dc.subjectGenetic incompatibilityen
dc.subjectGenetic mappingen
dc.subjectGenomic arrangementen
dc.subjectReproductive isolationen
dc.subjectTransmission ration distortionen
dc.subjectQH301 Biologyen
dc.subjectQH426 Geneticsen
dc.subjectDASen
dc.subject.lccQH301en
dc.subject.lccQH426en
dc.titleCompleting the hybridization triangle : the inheritance of genetic incompatibilities during homoploid hybrid speciation in ragworts (Senecio).en
dc.typeJournal articleen
dc.description.versionPublisher PDFen
dc.contributor.institutionUniversity of St Andrews.School of Biologyen
dc.identifier.doihttps://doi.org/10.1093/aobpla/ply078
dc.description.statusPeer revieweden


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