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Novel Weapons Testing: Are Invasive Plants More Chemically Defended than Native Plants

Lind, Eric M ; Parker, John D Kroymann, Juergen

PloS one, 2010-05, Vol.5 (5), p.e10429-e10429 [Periódico revisado por pares]

United States: Public Library of Science

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Título:
Novel Weapons Testing: Are Invasive Plants More Chemically Defended than Native Plants
Autor: Lind, Eric M ; Parker, John D
Kroymann, Juergen
Assuntos: Analysis ; Animals ; Biochemistry ; Biodiversity ; Biological products ; Chemical extracts ; Chemistry ; Cornus florida ; Ecology ; Ecology/Community Ecology and Biodiversity ; Evolution ; Evolutionary Biology/Evolutionary Ecology ; Flowers & plants ; Food webs ; Hedera helix ; Herbivores ; Hypotheses ; Indigenous plants ; Introduced species ; Invasive plants ; Invasive species ; Larva - physiology ; Liriodendron tulipifera ; Native species ; Ordnance testing ; Paulownia tomentosa ; Phylogenetics ; Phylogeny ; Plant Biology/Plant-Biotic Interactions ; Plant evolution ; Plant extracts ; Plant Leaves - chemistry ; Plant Physiological Phenomena ; Plants ; Plants (botany) ; Plants - chemistry ; Plants - genetics ; Preferences ; Quantitative Trait, Heritable ; Rubus phoenicolasius ; Sapindaceae ; Species Specificity ; Time Factors ; Trees ; Webs
É parte de: PloS one, 2010-05, Vol.5 (5), p.e10429-e10429
Notas: http://dx.doi.org/10.1371/journal.pone.0010429
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Conceived and designed the experiments: EML JDP. Performed the experiments: EML JDP. Analyzed the data: EML JDP. Wrote the paper: EML JDP.
Descrição: Background: Exotic species have been hypothesized to successfully invade new habitats by virtue of possessing novel biochemistry that repels native enemies. Despite the pivotal long-term consequences of invasion for native food-webs, to date there are no experimental studies examining directly whether exotic plants are any more or less biochemically deterrent than native plants to native herbivores. Methodology/Principal Findings: In a direct test of this hypothesis using herbivore feeding assays with chemical extracts from 19 invasive plants and 21 co-occurring native plants, we show that invasive plant biochemistry is no more deterrent (on average) to a native generalist herbivore than extracts from native plants. There was no relationship between extract deterrence and length of time since introduction, suggesting that time has not mitigated putative biochemical novelty. Moreover, the least deterrent plant extracts were from the most abundant species in the field, a pattern that held for both native and exotic plants. Analysis of chemical deterrence in context with morphological defenses and growth-related traits showed that native and exotic plants had similar trade-offs among traits. Conclusions/Significance: Overall, our results suggest that particular invasive species may possess deterrent secondary chemistry, but it does not appear to be a general pattern resulting from evolutionary mismatches between exotic plants and native herbivores. Thus, fundamentally similar processes may promote the ecological success of both native and exotic species.
Editor: United States: Public Library of Science
Idioma: Inglês

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Novel Weapons Testing: Are Invasive Plants More Chemically Defended than Native Plants

Lind, Eric M ; Parker, John D Kroymann, Juergen

United States: Public Library of Science

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