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- Title
Ecological speciation in sympatric palms: 3. Genetic map reveals genomic islands underlying species divergence in Howea.
- Authors
Papadopulos, Alexander S. T.; Igea, Javier; Dunning, Luke T.; Osborne, Owen G.; Quan, Xueping; Pellicer, Jaume; Turnbull, Colin; Hutton, Ian; Baker, William J.; Butlin, Roger K.; Savolainen, Vincent
- Abstract
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.
- Subjects
LORD Howe Island (N.S.W.); AUSTRALIA; SYMPATRIC speciation; GENE mapping; SPECIES; GENE flow; GENETIC speciation; PALMS; DROUGHT tolerance; DATE palm
- Publication
Evolution, 2019, Vol 73, Issue 9, p1986
- ISSN
0014-3820
- Publication type
Article
- DOI
10.1111/evo.13796