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Title
Evolutionary patterns of volatile terpene emissions across 202 tropical tree species
Fields of Research (FoR) 2008:
Author(s)
Courtois, Elodie A
Dexter, Kyle G
Stien, Didier
Engel, Julien
Baraloto, Christopher
Chave, Jerome
Publication Date
2016-05
Socio-Economic Objective (SEO) 2008
Early Online Version
Open Access
Yes
Abstract
Plant responses to natural enemies include formation of secondary metabolites acting as direct or indirect defenses. Volatile terpenes represent one of the most diverse groups of secondary metabolites. We aimed to explore evolutionary patterns of volatile terpene emission. We measured the composition of damage-induced volatile terpenes from 202 Amazonian tree species, spanning the angiosperm phylogeny. Volatile terpenes were extracted with solid-phase micro extraction and desorbed in a gas chromatography-mass spectrometry for compound identification. The chemical diversity of the terpene blend showed a strong phylogenetic signal as closely related species emitted a similar number of compounds. Closely related species also tended to have compositionally similar blends, although this relationship was weak. Meanwhile, the ability to emit compounds showed no significant phylogenetic signal for 200 of 286 compounds, indicating a high rate of diversification in terpene synthesis and/or great variability in their expression. Three lineages (Magnoliales, Laurales, Sapindales) showed exceptionally high rates of terpene diversification. Of the 70 compounds found in >10% of species, 69 displayed significant correlated evolution with at least one other compound. These results provide insights into the complex evolutionary history of volatile terpenes in angiosperms, while highlighting the need for further research into this important class of compounds.
Publication Type
Journal Article
Source of Publication
Ecology and Evolution, 6(9), p. 2854-2864
Publisher
John Wiley & Sons Ltd
Socio-Economic Objective (SEO) 2020
2016-03-22
Place of Publication
United Kingdom
ISSN
2045-7758
File(s) openpublished/EvolutionaryPaine2016JournalArticle.pdf (4.3 MB)
Published version
Fields of Research (FoR) 2020
Socio-Economic Objective (SEO) 2020
Peer Reviewed
Yes
HERDC Category Description
Peer Reviewed
Yes
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