Variation in sexual dimorphism in a wind-pollinated plant: The influence of geographical context and life-cycle dynamics

G. Puixeu Sala, M. Pickup, D. Field, S.C.H. Barrett, New Phytologist (2019).

Download
OA 2.31 MB

Journal Article | Epub ahead of print | English
Author
; ; ;
Abstract
* Understanding the mechanisms causing phenotypic differences between females and males has long fascinated evolutionary biologists. An extensive literature exists on animal sexual dimorphism but less information is known about sex differences in plants, particularly the extent of geographical variation in sexual dimorphism and its life‐cycle dynamics. * Here, we investigated patterns of genetically based sexual dimorphism in vegetative and reproductive traits of a wind‐pollinated dioecious plant, Rumex hastatulus, across three life‐cycle stages using open‐pollinated families from 30 populations spanning the geographic range and chromosomal variation (XY and XY1Y2) of the species. * The direction and degree of sexual dimorphism was highly variable among populations and life‐cycle stages. Sex‐specific differences in reproductive function explained a significant amount of temporal change in sexual dimorphism. For several traits, geographical variation in sexual dimorphism was associated with bioclimatic parameters, likely due to the differential responses of the sexes to climate. We found no systematic differences in sexual dimorphism between chromosome races. * Sex‐specific trait differences in dioecious plants largely result from a balance between sexual and natural selection on resource allocation. Our results indicate that abiotic factors associated with geographical context also play a role in modifying sexual dimorphism during the plant life‐cycle.
Publishing Year
Date Published
2019-07-10
Journal Title
New Phytologist
IST-REx-ID

Cite this

Puixeu Sala G, Pickup M, Field D, Barrett SCH. Variation in sexual dimorphism in a wind-pollinated plant: The influence of geographical context and life-cycle dynamics. New Phytologist. 2019. doi:10.1111/nph.16050
Puixeu Sala, G., Pickup, M., Field, D., & Barrett, S. C. H. (2019). Variation in sexual dimorphism in a wind-pollinated plant: The influence of geographical context and life-cycle dynamics. New Phytologist. https://doi.org/10.1111/nph.16050
Puixeu Sala, Gemma, Melinda Pickup, David Field, and Spencer C.H. Barrett. “Variation in Sexual Dimorphism in a Wind-Pollinated Plant: The Influence of Geographical Context and Life-Cycle Dynamics.” New Phytologist, 2019. https://doi.org/10.1111/nph.16050.
G. Puixeu Sala, M. Pickup, D. Field, and S. C. H. Barrett, “Variation in sexual dimorphism in a wind-pollinated plant: The influence of geographical context and life-cycle dynamics,” New Phytologist, 2019.
Puixeu Sala G, Pickup M, Field D, Barrett SCH. 2019. Variation in sexual dimorphism in a wind-pollinated plant: The influence of geographical context and life-cycle dynamics. New Phytologist.
Puixeu Sala, Gemma, et al. “Variation in Sexual Dimorphism in a Wind-Pollinated Plant: The Influence of Geographical Context and Life-Cycle Dynamics.” New Phytologist, Wiley, 2019, doi:10.1111/nph.16050.
All files available under the following license(s):
Creative Commons License:
CC-BYCreative Commons Attribution 4.0 International Public License (CC-BY 4.0)
Main File(s)
Access Level
OA Open Access
Last Uploaded
2019-08-27T12:44:54Z


Export

Marked Publications

Open Data IST Research Explorer

Search this title in

Google Scholar