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Appears in Collections:University of Stirling Research Data
Title: Floral orientation affects outcross pollen deposition in buzz-pollinated flowers with bilateral symmetry
Creator(s): Nevard, Lucy
Vallejo-Marin, Mario
Contact Email:
Date Available: 13-Sep-2022
Citation: Nevard, L; Vallejo-Marin, M (2022): Floral orientation affects outcross pollen deposition in buzz-pollinated flowers with bilateral symmetry. University of Stirling. Dataset.
Dataset Description (Abstract): Premise: Floral orientation is central to plant-pollinator interactions and is commonly associated with floral symmetry. Bilaterally symmetrical flowers are often oriented horizontally for optimal pollinator positioning and pollen transfer efficiency, while the orientation of radially symmetrical flowers is variable. Buzz-pollinated species (pollinated by vibration-producing bees) include bilateral, horizontally oriented flowers, and radial, pendant flowers. The effect of floral orientation on pollen transfer has never been tested in buzz-pollinated species. Methods: Here, we examine the effect of floral orientation on bumblebee-mediated pollen deposition in three buzz-pollinated Solanum species with different floral symmetry and natural orientations: S. lycopersicum and S. seaforthianum (radial, pendant), and S. rostratum (bilateral, horizontal). We test whether orientation affects total stigmatic pollen deposition (both self and outcross pollen) when all flowers have the same orientation (either pendant or horizontal). In a second experiment, we evaluated whether different orientation in donor and recipient flowers affects outcross pollen receipt in S. rostratum. Results: For the three Solanum species studied, there is no effect of floral orientation on total pollen deposition (both self and outcross) when flowers share the same orientation. In contrast, in our experiment with S. rostratum, we found that pendant flowers received fewer outcross pollen grains when paired with pendant donors. Conclusions: We suggest that floral orientation influences the quality of pollen transferred, with more outcross pollen transferred to horizontally oriented recipients in the bilaterally symmetrical S. rostratum. It remains to be established whether other bilaterally symmetrical, buzz-pollinated flowers also benefit from increased cross-pollination when presented horizontally.
Dataset Description (TOC): The dataset contains two csv files containing data on stigmatic pollen deposition in two separate experiments (one on three species of Solanum and the other using one species). Additionally, there is an R script for the plotting and statistical analysis related to these data.
Type: dataset
Contract/Grant Title: Buzz pollination: Integrating bee behaviour and floral evolution
Effects of floral morphology on plant-pollinator interactions in buzz-pollinated flowers
Funder(s): NERC - Natural Environment Research Council
Leverhulme Trust
Contract/Grant Number: RPG-2018-235
Worktribe Project ID: 350065
Rights: Rights covered by the standard CC-BY 4.0 licence:
Affiliation(s) of Dataset Creator(s): University of Stirling (Biological and Environmental Sciences)
Uppsala University

Files in This Item:
File Description SizeFormat 
Analysis_acceptedarticleAJB.R9.36 kBUnknownView/Open
Stigmapollen_exptonefilter.csv18.61 kBUnknownView/Open
Stigmapollen_exptthreefilter.csv10.03 kBUnknownView/Open

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