The evolvability of animal-pollinated flowers: towards predicting adaptation to novel pollinator communities

The New Phytologist
Øystein H Opedal

Abstract

In the event of a community turnover, population decline, or complete disappearance of pollinators, animal-pollinated plants may respond by adapting to novel pollinators or by changing their mating system. The ability of populations to adapt is determined by their ability to respond to novel selection pressures, i.e. their evolvability. In the short term, evolvability is determined by standing genetic variation in the trait under selection. To evaluate the evolutionary potential of plant reproductive systems, I compiled genetic-variance estimates for a large selection of floral traits mediating shifts in pollination and mating systems. Then, I computed evolvabilities and compared these among trait groups and against the evolvabilities of vegetative traits. Evolvabilities of most floral traits were substantial yet tended to be lower than the median for vegetative traits. Among floral traits, herkogamy (anther-stigma distance), floral-display traits and perhaps floral-volatile concentrations had greater-than-average evolvabilities, while the evolvabilities of pollinator-fit traits were below average. These results suggest that most floral traits have the potential to evolve rapidly in response to novel selection pressures, provid...Continue Reading

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Citations

Apr 2, 2020·The New Phytologist
Nov 25, 2020·Evolution; International Journal of Organic Evolution·Elena AlbertsenW Scott Armbruster
Apr 9, 2021·The Plant Cell·María Jazmín Abraham-JuárezMadelaine Bartlett
Apr 20, 2021·Frontiers in Plant Science·Katarzyna RoguzMarcin Zych
Apr 18, 2021·The New Phytologist·Agnes S DellingerJürg Schönenberger
Jul 4, 2021·Current Opinion in Biotechnology·Léa FrachonNatalia Dudareva

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