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  • Evolution_Savolainen final

    Accepted author manuscript, 1 MB, PDF document

    Embargo ends: 24/04/20

    Licence: Unspecified

DOI

  • Alexander S. T. Papadopulos
  • Javier Igea
    University of Cambridge
  • Luke T Dunning
    University of Sheffield
  • Owen G. Osborne
    Imperial College London, UK
  • Xueping Quan
    Imperial College London, UK
  • Jaume Pellicer
    Royal Botanic Gardens, Kew, UK
  • Colin Turnbull
    Imperial College London, UK
  • Ian Hutton
    Lord Howe Island Museum, Lord Howe Island, New South Wales, Australia
  • William J. Baker
    Royal Botanic Gardens, Kew, UK
  • Roger K. Butlin
    University of Sheffield
  • Vincent Savolainen
    Imperial College London, UK
Although it is now widely accepted that speciation can occur in the face of continuous gene flow, with little or no spatial separation, the mechanisms and genomic architectures that permit such divergence are still debated. Here, we examined speciation in the face of gene flow in the Howea palms of Lord Howe Island, Australia. We built a genetic map using a novel method applicable to long-lived tree species, combining it with double digest restriction-site associated DNA sequencing of multiple individuals. Based upon various metrics, we detected 46 highly differentiated regions throughout the genome, four of which contained genes with functions that are particularly relevant to the speciation scenario for Howea, specifically salt and drought tolerance.

Keywords

  • Genetic map, Sympatry, Speciation, Genome, ddRAD
Original languageEnglish
Pages (from-to)1986-1995
JournalEvolution
Volume73
Issue number9
Early online date12 Jul 2019
DOIs
Publication statusPublished - Sep 2019
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