The integrative roles of plant secondary metabolites in natural systems: a synthesis / Glenn R. Iason, Marcel Dicke, and Susan E. Hartley -- Natural selection for anti-herbivore plant secondary metabolites: a eucalyptus system / Julianne M. O'Reilly-Wapstra, Clare McArthur and Brad M. Potts -- Temporal changes in plant secondary metabolite production: patterns, causes, and consequences / Julia Koricheva and Kasey E. Barton -- Mixtures in plant chemical defence: metabolic origins and ecological benefits / Jonathan Gershenzon [and others] -- The herbivore's prescription: a pharm-ecological perspective on host plant use by vertebrate and invertebrate herbivores / Jennifer S. Forbey and Mark D. Hunter -- Volatile isoprenoids and abiotic stresses / Francesca Bagnoli, Silvia Fineschi, and Francesco Loreto -- Atmospheric change, plant secondary metabolites, and ecological interactions / Richard L. Lindroth -- The role of plant secondary metabolites in freshwater macrophyte-herbivore interactions: limited or unexplored chemical defences? / Elisabeth M. Gross and Elisabeth S. Bakker -- The soil microbial community and plant foliar defences against insects / Alan C. Gange, Rene Eschen, and Viviane Schroeder -- Phytochemicals as mediators of aboveground-belowground interactions in plants / Nicole M. van Dam -- Plant secondary metabolites and the interactions between plants and other organisms: the potential of a metabolomic approach / Susan E. Hartley [and others] -- Integrating the effects of PSMs on vertebrate herbivores across spatial and temporal scales / Ben D. Moore and Jane L. DeGabriel -- Plant secondary metabolite polymorphisms and the extended chemical phenotype / Glenn R. Iason [and others] -- From genes to ecosystems: emerging concepts bridging ecological and evolutionary dynamics / Joseph K. Bailey [and others] -- Asking the ecosystem if herbivory-inducible plant volatiles (hipvs) have defensive functions / Meredith C. Schuman and Ian T. Baldwin -- Dynamics of plant secondary metabolites and consequences for food chains and community dynamics / Marcel Dicke, Rieta Gols, and Erik H. Poelman.