Multiple effects of drought on pollination and mating-system traits in Dalechampia scandens
(2016) In International Journal of Plant Sciences 177(8). p.682-693- Abstract
Premise of research. Selfing rates in mixed-mating plant species are often found to fluctuate greatly across time and space. Environmentally induced changes in floral traits may mediate changes in selfing rates through several mechanisms, including direct effects via changes in traits influencing autofertility rates and indirect effects via changes in traits affecting the rate of pollinator visitation and/or the efficiency of cross-pollination. In this study, we tested how experimentally induced drought affected traits related to these three components of plant mating systems. Methodology. We subjected two populations from each of two species in the Dalechampia scandens species complex to a series of experimental drought events in the... (More)
Premise of research. Selfing rates in mixed-mating plant species are often found to fluctuate greatly across time and space. Environmentally induced changes in floral traits may mediate changes in selfing rates through several mechanisms, including direct effects via changes in traits influencing autofertility rates and indirect effects via changes in traits affecting the rate of pollinator visitation and/or the efficiency of cross-pollination. In this study, we tested how experimentally induced drought affected traits related to these three components of plant mating systems. Methodology. We subjected two populations from each of two species in the Dalechampia scandens species complex to a series of experimental drought events in the greenhouse. We measured drought effects on advertisement (signaling) traits, reward traits, herkogamy, dichogamy, autofertility, and pollination accuracy and compared these across populations and species. Pivotal results. Blossom size (advertisement and reward traits) and dichogamy were consistently reduced under dry conditions. In contrast, the effects of drought on herkogamy and autofertility were population specific. Similarly, despite consistent effects of drought on traits functionally related to pollen transfer, changes in pollination accuracy differed among populations. When plants were returned to a benign moisture environment, phenotypic changes were largely reversed. Conclusions. These results show that environmental variation may simultaneously affect multiple traits related to plant mating systems and, thus, mediate spatial and temporal variation in selfing rates. However, except for size reductions in advertisement and reward traits, these effects tend to be population specific and, therefore, difficult to predict.
(Less)
- author
- Opedal, Øystein H. LU ; Listemann, Jens ; Albertsen, Elena ; Armbruster, W. Scott and Pélabon, Christophe
- publishing date
- 2016-10
- type
- Contribution to journal
- publication status
- published
- keywords
- Dalechampia, Dichogamy, Herkogamy, Mating-system traits, Plant-pollinator interactions, Pollination accuracy, References
- in
- International Journal of Plant Sciences
- editor
- Caruso, Christina M.
- volume
- 177
- issue
- 8
- pages
- 12 pages
- publisher
- University of Chicago Press
- external identifiers
-
- scopus:84989316531
- ISSN
- 1058-5893
- DOI
- 10.1086/687985
- language
- English
- LU publication?
- no
- additional info
- Publisher Copyright: © 2016 by The University of Chicago. All rights reserved.
- id
- 4ca40dc7-86c9-40a8-ba12-8795c0931a44
- date added to LUP
- 2024-07-24 08:48:55
- date last changed
- 2024-08-14 10:53:16
@article{4ca40dc7-86c9-40a8-ba12-8795c0931a44,
abstract = {{<p>Premise of research. Selfing rates in mixed-mating plant species are often found to fluctuate greatly across time and space. Environmentally induced changes in floral traits may mediate changes in selfing rates through several mechanisms, including direct effects via changes in traits influencing autofertility rates and indirect effects via changes in traits affecting the rate of pollinator visitation and/or the efficiency of cross-pollination. In this study, we tested how experimentally induced drought affected traits related to these three components of plant mating systems. Methodology. We subjected two populations from each of two species in the Dalechampia scandens species complex to a series of experimental drought events in the greenhouse. We measured drought effects on advertisement (signaling) traits, reward traits, herkogamy, dichogamy, autofertility, and pollination accuracy and compared these across populations and species. Pivotal results. Blossom size (advertisement and reward traits) and dichogamy were consistently reduced under dry conditions. In contrast, the effects of drought on herkogamy and autofertility were population specific. Similarly, despite consistent effects of drought on traits functionally related to pollen transfer, changes in pollination accuracy differed among populations. When plants were returned to a benign moisture environment, phenotypic changes were largely reversed. Conclusions. These results show that environmental variation may simultaneously affect multiple traits related to plant mating systems and, thus, mediate spatial and temporal variation in selfing rates. However, except for size reductions in advertisement and reward traits, these effects tend to be population specific and, therefore, difficult to predict.</p>}},
author = {{Opedal, Øystein H. and Listemann, Jens and Albertsen, Elena and Armbruster, W. Scott and Pélabon, Christophe}},
editor = {{Caruso, Christina M.}},
issn = {{1058-5893}},
keywords = {{Dalechampia; Dichogamy; Herkogamy; Mating-system traits; Plant-pollinator interactions; Pollination accuracy; References}},
language = {{eng}},
number = {{8}},
pages = {{682--693}},
publisher = {{University of Chicago Press}},
series = {{International Journal of Plant Sciences}},
title = {{Multiple effects of drought on pollination and mating-system traits in Dalechampia scandens}},
url = {{http://dx.doi.org/10.1086/687985}},
doi = {{10.1086/687985}},
volume = {{177}},
year = {{2016}},
}