<i>Petunia</i>flowers solve the defence/apparency dilemma of pollinator attraction by deploying complex floral blends
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- Danny Kessler
- Department of Molecular Ecology Max‐Planck‐Institute for Chemical Ecology Hans‐Knöll‐Str. 8 DE‐07745 Jena Germany
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- Celia Diezel
- Department of Molecular Ecology Max‐Planck‐Institute for Chemical Ecology Hans‐Knöll‐Str. 8 DE‐07745 Jena Germany
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- David G. Clark
- Environmental Horticulture Department University of Florida 1525 Fifield Hall Gainesville FL 32611 USA
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- Thomas A. Colquhoun
- Environmental Horticulture Department University of Florida 1525 Fifield Hall Gainesville FL 32611 USA
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- Ian T. Baldwin
- Department of Molecular Ecology Max‐Planck‐Institute for Chemical Ecology Hans‐Knöll‐Str. 8 DE‐07745 Jena Germany
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- Rebecca Irwin
- editor
説明
<jats:title>Abstract</jats:title><jats:p>Flowers recruit floral visitors for pollination services by emitting fragrances. These scent signals can be intercepted by antagonists such as florivores to locate host plants. Hence, as a consequence of interactions with both mutualists and antagonists, floral bouquets likely consist of both attractive and defensive components. While the attractive functions of floral bouquets have been studied, their defensive function has not, and field‐based evidence for the deterrence of floral‐scent constituents is lacking. In field and glasshouse experiments with five lines of transgenic<jats:italic>Petunia x hybrida</jats:italic>plants specifically silenced in their ability to release particular components of their floral volatile bouquet, we demonstrate that the emission of single floral‐scent compounds can dramatically decrease damage from generalist florivores. While some compounds are used in host location, others prevent florivory. We conclude that the complex blends that comprise floral scents are likely sculpted by the selective pressures of both pollinators and herbivores.</jats:p>
収録刊行物
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- Ecology Letters
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Ecology Letters 16 (3), 299-306, 2012-11-23
Wiley