title: Sequestration of plant secondary metabolites by insect herbivores: molecular mechanisms and ecological consequences.
abstract: Numerous insect herbivores can take up and store plant toxins as self-defense against their own natural enemies. Plant toxin sequestration is tightly linked with tolerance strategies that keep the toxins functional. Specific transporters have been identified that likely allow the herbivore to control the spatiotemporal dynamics of toxin accumulation. Certain herbivores furthermore possess specific enzymes to boost the bioactivity of the sequestered toxins. Ecologists have studied plant toxin sequestration for decades. The recently uncovered molecular mechanisms in combination with transient, non-transgenic systems to manipulate insect gene expression will help to understand the importance of toxin sequestration for food-web dynamics in nature.
authors.affiliation: Institute of Plant Sciences, University of Bern, Altenbergrain 21, 3013 Bern, Switzerland.
authors.forename: Matthias
authors.initials: M
authors.lastname: Erb
authors.affiliation: Institute of Plant Sciences, University of Bern, Altenbergrain 21, 3013 Bern, Switzerland. Electronic address: christelle.robert@ips.unibe.ch.
authors.forename: Christelle Am
authors.initials: CA
authors.lastname: Robert
mesh_terms: D000818:Animals; D004463:Ecology; D020387:Food Chain; D060434:Herbivory; D007313:Insecta / Q000378:metabolism*; D018515:Plant Leaves / Q000737:chemistry; D010944:Plants / Q000737:chemistry* / Q000378:metabolism