2004/07/01 by André Keßler, Rayko Halitschke, Ian T. Baldwin · 7 citations
Agricultural and Biological Sciences · #Insect-Plant Interactions and Control #Plant Parasitism and Resistance #Plant and animal studies
paper · doi:10.1126/science.1096931
openalex publication_date 2004/07/01 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/23
We transformed the native tobacco, Nicotiana attenuata, to silence its lipoxygenase, hydroperoxide lyase, and allene oxide synthase genes in order to inhibit oxylipin signaling, known to mediate the plant's direct and indirect defenses. When planted into native habitats, lipoxygenase-deficient plants were more vulnerable to N. attenuata's adapted herbivores but also attracted novel herbivore species, which fed and reproduced successfully. In addition to highlighting the value of genetically silencing plants to study ecological interactions in nature, these results show that lipoxygenase-dependent signaling determines host selection for opportunistic herbivores and that induced defenses influence herbivore community composition.