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Ecological speciati...
Ecological speciation in sympatric palms: 1. Gene expression, selection and pleiotropy
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Dunning, L. T. (author)
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Hipperson, H. (author)
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Baker, W. J. (author)
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- Butlin, Roger, 1955 (author)
- Gothenburg University,Göteborgs universitet,Institutionen för biologi och miljövetenskap, Tjärnö marinbiologiska laboratorium,Department of Biological and Environmental Sciences, Tjärnö Marine Biological Laboratory
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Devaux, C. (author)
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Hutton, I. (author)
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Igea, J. (author)
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Papadopulos, A. S. T. (author)
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Quan, X. (author)
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Smadja, C. M. (author)
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Turnbull, C. G. N. (author)
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Savolainen, V. (author)
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(creator_code:org_t)
- 2016-06-03
- 2016
- English.
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In: Journal of Evolutionary Biology. - : Wiley. - 1010-061X .- 1420-9101. ; 29:8, s. 1472-1487
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Abstract
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- Ecological speciation requires divergent selection, reproductive isolation and a genetic mechanism to link the two. We examined the role of gene expression and coding sequence evolution in this process using two species of Howea palms that have diverged sympatrically on Lord Howe Island, Australia. These palms are associated with distinct soil types and have displaced flowering times, representing an ideal candidate for ecological speciation. We generated large amounts of RNA-Seq data from multiple individuals and tissue types collected on the island from each of the two species. We found that differentially expressed loci as well as those with divergent coding sequences between Howea species were associated with known ecological and phenotypic differences, including response to salinity, drought, pH and flowering time. From these loci, we identified potential ecological speciation genes' and further validate their effect on flowering time by knocking out orthologous loci in a model plant species. Finally, we put forward six plausible ecological speciation loci, providing support for the hypothesis that pleiotropy could help to overcome the antagonism between selection and recombination during speciation with gene flow.
Subject headings
- NATURVETENSKAP -- Biologi -- Ekologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Ecology (hsv//eng)
- NATURVETENSKAP -- Biologi -- Evolutionsbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Evolutionary Biology (hsv//eng)
Keyword
- Lord Howe Island
- positive selection
- sympatric speciation
- transcriptomics
- lord-howe island
- adaptive protein evolution
- multilocus genotype data
- flowering-locus-c
- rna-seq data
- arabidopsis-thaliana
- abscisic-acid
- physcomitrella-patens
- functional-analysis
- negative regulator
- Environmental Sciences & Ecology
- Evolutionary Biology
- Heredity
Publication and Content Type
- ref (subject category)
- art (subject category)
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- By the author/editor
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Dunning, L. T.
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Hipperson, H.
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Baker, W. J.
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Butlin, Roger, 1 ...
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Devaux, C.
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Hutton, I.
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show more...
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Igea, J.
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Papadopulos, A. ...
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Quan, X.
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Smadja, C. M.
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Turnbull, C. G. ...
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Savolainen, V.
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show less...
- About the subject
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Biological Scien ...
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and Ecology
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- NATURAL SCIENCES
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NATURAL SCIENCES
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and Biological Scien ...
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and Evolutionary Bio ...
- Articles in the publication
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Journal of Evolu ...
- By the university
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University of Gothenburg