Are long corolla tubes in Pedicularis driven by pollinator selection?
نویسندگان
چکیده
منابع مشابه
Going to great lengths: selection for long corolla tubes in an extremely specialized bat-flower mutualism.
In a hypothesis that has remained controversial since its inception, Darwin suggested that long-tubed flowers and long-tongued pollinators evolved together in a coevolutionary race, with each selecting for increasing length in the other. Although the selective pressures that flowers impose on tongue length are relatively straightforward, in that longer tongues allow access to more nectar, selec...
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BACKGROUND It is normally thought that deep corolla tubes evolve when a plant's successful reproduction is contingent on having a corolla tube longer than the tongue of the flower's pollinators, and that pollinators evolve ever-longer tongues because individuals with longer tongues can obtain more nectar from flowers. A recent model shows that, in the presence of pollinators with long and short...
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A third of all angiosperm species produce flowers with petals fused into a corolla tube. The various elaborations of corolla tube attributes, such as length, width and curvature, have enabled plants to exploit many specialized pollinator groups. These elaborations often differ dramatically among closely related species, contributing to pollinator shift and pollinator-mediated reproductive isola...
متن کاملThe role of pollinator diversity in the evolution of corolla-shape integration in a pollination-generalist plant clade.
Flowers of animal-pollinated plants are integrated structures shaped by the action of pollinator-mediated selection. It is widely assumed that pollination specialization increases the magnitude of floral integration. However, empirical evidence is still inconclusive. In this study, we explored the role of pollinator diversity in shaping the evolution of corolla-shape integration in Erysimum, a ...
متن کاملLong-term morphological stasis maintained by a plant-pollinator mutualism.
Many major branches in the Tree of Life are marked by stereotyped body plans that have been maintained over long periods of time. One possible explanation for this stasis is that there are genetic or developmental constraints that restrict the origin of novel body plans. An alternative is that basic body plans are potentially quite labile, but are actively maintained by natural selection. We pr...
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ژورنال
عنوان ژورنال: Journal of Integrative Plant Biology
سال: 2016
ISSN: 1672-9072,1744-7909
DOI: 10.1111/jipb.12460