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In this study we investigated the effect of methyl jasmonate (MeJA) application on pyrrolizidine alkaloid (PA) concentration and… Expand IntroductionUsually whole plant or whole leaf extracts are analyzed to study the chemical ecology of insect-plant interactions… Expand Plant specialised metabolites (SMs) are very diverse in terms of both their number and chemical structures with more than 200,000… Expand Pyrrolizidine alkaloids (PAs) are part of the constitutive chemical defence against herbivores. PA composition in plants is… Expand Pyrrolizidine alkaloids (PAs) are feeding deterrents and toxic compounds to generalist herbivores. Among the PAs of Jacobaea… Expand Pyrrolizidine alkaloids (PAs) are a structurally diverse group of toxicologically relevant secondary plant metabolites. Currently… Expand The evolution of the diversity of plant secondary metabolites is still poorly understood. To determine whether natural enemies… Expand We studied the variation in pyrrolizidine alkaloid (PA) patterns of lab-grown vegetative plants of 11 European Senecio jacobaea… Expand Erucifoline (1) and 9-angeloylhastanecine (2) were isolated from the aerial parts of Senecio aquaticus. Five other pyrrolizidine… Expand