Please use this identifier to cite or link to this item: http://hdl.handle.net/1893/23353
Appears in Collections:Biological and Environmental Sciences Journal Articles
Peer Review Status: Refereed
Title: Evolutionary patterns of volatile terpene emissions across 202 tropical tree species
Authors: Courtois, Elodie A
Dexter, Kyle G
Paine, C E Timothy
Stien, Didier
Engel, Julien
Baraloto, Christopher
Chave, Jerome
Contact Email: c.e.t.paine@stir.ac.uk
Keywords: Chemical defense
French Guiana
herbivory
secondary metabolites
tropical forest
Issue Date: May-2016
Publisher: Wiley-Blackwell
Citation: Courtois EA, Dexter KG, Paine CET, Stien D, Engel J, Baraloto C & Chave J (2016) Evolutionary patterns of volatile terpene emissions across 202 tropical tree species, Ecology and Evolution, 6 (9), pp. 2854-2864.
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 a given compound 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, and Sapindales) showed exceptionally high rates of terpene diversification. Of the 70 compounds found in >10% of their 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.
Type: Journal Article
URI: http://hdl.handle.net/1893/23353
DOI Link: http://dx.doi.org/10.1002/ece3.1810
Rights: © 2015 The Authors. Ecology and Evolution published by John Wiley & Sons Ltd. This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.
Affiliation: Universite Paul Sabatier, Toulouse, France
Universite Paul Sabatier, Toulouse, France
Biological and Environmental Sciences
UMR "Ecologie des Forêts de Guyane", French Guiana
UMR "Ecologie des Forêts de Guyane", French Guiana
UMR "Ecologie des Forêts de Guyane", French Guiana
Universite Paul Sabatier, Toulouse, France

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