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Postpollination Changes in Floral Odor in Silene latifolia : Adaptive Mechanisms for Seed-Predator Avoidance?

Muhlemann, Joëlle ; Waelti, Marc ; Widmer, Alex ; Schiestl, Florian

In: Journal of Chemical Ecology, 2006, vol. 32, no. 8, p. 1855-1860

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    Titre
    • Postpollination Changes in Floral Odor in Silene latifolia
      Adaptive Mechanisms for Seed-Predator Avoidance?
    Auteur
    • Muhlemann, Joëlle. Plant Ecological Genetics, Institute of Integrative Biology, ETH Zurich, 8092, Zurich, Switzerland
    • Waelti, Marc. Plant Ecological Genetics, Institute of Integrative Biology, ETH Zurich, 8092, Zurich, Switzerland
    • Widmer, Alex. Plant Ecological Genetics, Institute of Integrative Biology, ETH Zurich, 8092, Zurich, Switzerland
    • Schiestl, Florian. Plant Ecological Genetics, Institute of Integrative Biology, ETH Zurich, 8092, Zurich, Switzerland
    Type de document
    • Postprint
    Langue
    • Anglais
    Publié dans
    • Journal of Chemical Ecology, 2006, vol. 32, no. 8, p. 1855-1860. Kluwer Academic Publishers-Plenum Publishers; http://www.springer-ny.com
    Autre version électronique
    Identifiant OAI-PMH
    • oai:doc.rero.ch:321532
    Summary
    Floral odor is a key trait for pollinator attraction in many plants, but may also direct antagonists like herbivores to flowers. In this study, we examined how floral scent changes after pollination in Silene latifolia, which has a specialized relationship with the seed predator Hadena bicruris. We found an overall decrease in total scent emission and considerable changes in relative amounts of scent compounds after pollination. Lilac aldehydes A and B as well as veratrole contributed most to the decrease in scent emission. These three compounds are known to be key signals for the attraction of H. bicruris to the flowers. A specific downregulation of these compounds may increase the reproductive success of the plant by reducing seed predation after pollination