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Differences in mati...
Differences in mating system and predicted parental conflict affect post-pollination reproductive isolation in a flowering plant
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- Petrén, Hampus (författare)
- Uppsala universitet,Uppsala University,Lund University,Lunds universitet,Biodiversitet,Biologiska institutionen,Naturvetenskapliga fakulteten,Artbildning, anpassning och samevolution,Forskargrupper vid Lunds universitet,Biodiversity,Department of Biology,Faculty of Science,Speciation, Adaptation and Coevolution,Lund University Research Groups,Evolutionsbiologi,Lund Univ, Dept Biol, Lund, Sweden.
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- Thosteman, Hanna (författare)
- Lund University,Lunds universitet,Biodiversitet,Biologiska institutionen,Naturvetenskapliga fakulteten,Artbildning, anpassning och samevolution,Forskargrupper vid Lunds universitet,Biodiversity,Department of Biology,Faculty of Science,Speciation, Adaptation and Coevolution,Lund University Research Groups,Lund Univ, Dept Biol, Lund, Sweden.
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- Stift, Marc (författare)
- University of Konstanz,Univ Konstanz, Dept Biol, Ecol, Constance, Germany.
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- Toräng, Per (författare)
- Uppsala universitet,Uppsala University,Swedish University of Agricultural Sciences,Evolutionsbiologi,SLU Swedish Species Informat Ctr, Uppsala, Sweden.
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- Ågren, Jon (författare)
- Uppsala universitet,Uppsala University,Evolutionsbiologi
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- Friberg, Magne (författare)
- Uppsala universitet,Uppsala University,Lund University,Lunds universitet,Biodiversitet,Biologiska institutionen,Naturvetenskapliga fakulteten,Artbildning, anpassning och samevolution,Forskargrupper vid Lunds universitet,Biodiversity,Department of Biology,Faculty of Science,Speciation, Adaptation and Coevolution,Lund University Research Groups,Växtekologi och evolution,Evolutionsbiologi,Lund Univ, Dept Biol, Lund, Sweden.
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(creator_code:org_t)
- 2023-02-03
- 2023
- Engelska.
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Ingår i: Evolution; international journal of organic evolution. - : Oxford University Press (OUP). - 1558-5646 .- 0014-3820. ; 77:4, s. 1019-1030
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Abstract
Ämnesord
Stäng
- Mating system shifts from outcrossing to selfing are frequent in plant evolution. Relative to outcrossing, selfing is associated with reduced parental conflict over seed provisioning, which may result in postzygotic, asymmetric, reproductive isolation in crosses between populations of different mating systems. To test the hypothesis that post-pollination reproductive isolation between populations increases with increasing differences in mating system and predicted parental conflict, we performed a crossing experiment involving all combinations of three self-compatible populations (with low outcrossing rates), and three self-incompatible populations (with high outcrossing rates) of the arctic-alpine herb Arabis alpina, assessing fitness-related seed and plant traits of the progeny. Predicted levels of parental conflict ("genome strength") were quantified based on strength of self-incompatibility and estimates of outcrossing rates. Crosses between self-compatible and self-incompatible populations yielded very small seeds of low viability, resulting in strong reproductive isolation. In 14 of 15 reciprocal between-population crosses, seeds were heavier when the paternal plant had the stronger genome, and seed mass differences between cross directions increased with an increased difference in parental conflict. Overall, our results suggest that, when sufficiently large, differences in mating system and hence in expected parental conflict may result in strong post-pollination reproductive barriers contributing to speciation.
Ämnesord
- NATURVETENSKAP -- Biologi -- Evolutionsbiologi (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Evolutionary Biology (hsv//eng)
- NATURVETENSKAP -- Biologi -- Genetik (hsv//swe)
- NATURAL SCIENCES -- Biological Sciences -- Genetics (hsv//eng)
Nyckelord
- Arabis alpina
- breeding system
- mating system
- parental conflict
- reproductive isolation
- speciation
- Arabis alpina
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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