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Diverse Developmental Responses to Warming Temperatures Underlie Changes in Flowering Phenologies
Pamela K Diggle1, Christa P H Mulder2
1Department of Ecology and Evolutionary Biology, University of Connecticut, Storrs, CT 06269, USA.
Integrative and Comparative Biology
|May 26, 2019
Summary
Climate change impacts flowering times. New models explain why some plants delay flowering despite warmer temperatures, focusing on multi-year flower development in temperate trees.
Area of Science:
- Plant Science
- Ecology
- Climate Change Biology
Background:
- Global temperature increases due to climate change are altering plant phenology.
- Many angiosperms exhibit earlier flowering in response to warming, but exceptions are common, with some species delaying flowering.
Purpose of the Study:
- To propose and evaluate models explaining delayed flowering in response to warmer growing seasons.
- To investigate the influence of temperature on multi-year flower development in temperate forest trees.
Main Methods:
- Development of models exploring the effects of growing-season temperature on flower development processes.
- Synthesis of existing literature on flower development in woody perennials to evaluate proposed models.
Main Results:
- Existing phenological models do not fully account for exceptions to earlier flowering with warming.
- Warmer growing seasons can lead to delayed flowering in many species due to impacts on multi-year flower development.
Conclusions:
- Flower development is a complex, multi-year process influenced by temperature, explaining counter-intuitive phenological responses.
- Further research is needed to understand the specific developmental processes underlying temperature-insensitive or delaying flowering responses in certain taxa.
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