Different rates of defense evolution and niche preferences in clonal and nonclonal milkweeds (Asclepias spp.).

Details

Serval ID
serval:BIB_CE40C3E3B743
Type
Article: article from journal or magazin.
Collection
Publications
Title
Different rates of defense evolution and niche preferences in clonal and nonclonal milkweeds (Asclepias spp.).
Journal
New Phytologist
Author(s)
Pellissier L., Litsios G., Fishbein M., Salamin N., Agrawal A.A., Rasmann S.
ISSN
1469-8137 (Electronic)
ISSN-L
0028-646X
Publication state
Published
Issued date
2016
Volume
209
Number
3
Pages
1230-1239
Language
english
Abstract
Given the dual role of many plant traits to tolerate both herbivore attack and abiotic stress, the climatic niche of a species should be integrated into the study of plant defense strategies. Here we investigate the impact of plant reproductive strategy and components of species' climatic niche on the rate of chemical defense evolution in the milkweeds using a common garden experiment of 49 species. We found that across Asclepias species, clonal reproduction repeatedly evolved in lower temperature conditions, in species generally producing low concentrations of a toxic defense (cardenolides). Additionally, we found that rates of cardenolide evolution were lower for clonal than for nonclonal species. We thus conclude that because the clonal strategy is based on survival, long generation times, and is associated with tolerance of herbivory, it may be an alternative to toxicity in colder ecosystems. Taken together, these results indicate that the rate of chemical defense evolution is influenced by the intersection of life-history strategy and climatic niches into which plants radiate.
Keywords
cardenolides, climatic niche, clonality, resistance, tolerance, trait evolution
Pubmed
Web of science
Create date
13/05/2016 8:46
Last modification date
20/08/2019 16:48
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