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Abstract Detail


Duran Castillo , Mario Saturnino [1], Hudson, Andrew [2], Twyford, Alex [3].

Genomic patterns of gene flow and divergence in the genus Antirrhinum.

Plant’s sessile habit and extreme variation in ploidy level, mating system and dispersal provide excellent opportunities for the study of speciation. However substantial challenges remain in elucidating the role of different evolutionary processes in the generation of new species.The genus Antirrhinum, including the model system A. majus, has many resources for addressing a wide range of evolutionary questions about speciation. Here we use restriction site associated DNA (RAD-seq) to resolve the species relationships in the genus Antirrhinum using a maximum likelihood approach. This phylogeny reveals the evolutionary relationships within the genus for the first time, and also show strong geographic clustering of species. Focused population genomic work on a clade from the Sierra Nevada, Spain, further reveals geographic signal and extensive hybridization. Overall, this suggests rapid species divergence exploiting local geographic niches despite homogenising hybridisation.

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1 - The University Of Edinburgh, Institute Of Evolutionary Biology, Charlotte Auerbach Road, University Of Edinburgh, Ashworth Laboratories, Room 112, Ashworth 2, Edinburgh, EH9 3FL, UK
2 - The University of Edinburgh, Institute of Molecular Plant Sciences, Max Born Crescent, Edinburgh, EH9 3BF, UK
3 - University Of Edinburgh, Institute Of Evolutionary Biology, Kings Buildings, West Mains Road, Charlotte Auerbach Road, Edinburgh, EH9 3FL, UK


Presentation Type: Oral Paper
Session: 36, Phylogenomics III
Location: 107/Mayo Civic Center
Date: Wednesday, July 25th, 2018
Time: 9:15 AM
Number: 36006
Abstract ID:823
Candidate for Awards:None

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