In: Journal Of Experimental Botany, 2015, vol. 66, no. 17, p. 5327-5336
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In: Journal Of Experimental Botany, 2015, vol. 66, no. 2, p. 603-611
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In: Annals of the Entomological Society of America, 2010, vol. 103, no. 5, p. 742-749
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In: Biological Control, 2012, vol. 60, no. 1, p. 7-15
Synthetic elicitors can be used to induce resistance in plants against pathogens and arthropod herbivores. Such compounds may also change the emission of herbivore-induced plant volatiles, which serve as important cues for parasitic wasps to locate their hosts. Therefore, the use of elicitors in the field may affect biological control of insect pests. To test this, we treated maize seedlings...
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In: Biodiversity and Conservation, 2011, vol. 20, no. 13, p. 3003-3016
Apparent competition, through the action of shared natural enemies, is frequently suggested as a possible mechanism underlying the impact of invasive alien species on native species, but examples are rare, particularly in insects. A previous study showed that the beech leaf mining weevil, Orchestes fagi, was significantly less abundant close to horse-chestnut trees infested by the invasive...
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In: The Plant Journal, 2009, vol. 59, no. 2, p. 292-302
Plants activate local and systemic defence mechanisms upon exposure to stress. This innate immune response is partially regulated by plant hormones, and involves the accumulation of defensive metabolites. Although local defence reactions to herbivores are well studied, less is known about the impact of root herbivory on shoot defence. Here, we examined the effects of belowground infestation by...
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In: New Phytologist, 2011, vol. 189, no. 1, p. 308-320
Herbivore-induced systemic resistance occurs in many plants and is commonly assumed to be adaptive. The mechanisms triggered by leaf-herbivores that lead to systemic resistance are largely understood, but it remains unknown how and why root herbivory also increases resistance in leaves. To resolve this, we investigated the mechanism by which the root herbivore Diabrotica...
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In: Journal of Ecology, 2011, vol. 99, no. 1, p. 7-15
1. Induced changes in plant quality can mediate indirect interactions between herbivores. Although the sequence of attack by different herbivores has been shown to influence plant responses, little is known about how this affects the herbivores themselves. 2. We therefore investigated how induction by the leaf herbivore Spodoptera frugiperda influences resistance of teosinte...
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In: Plant, Cell & Environment, 2011, vol. 34, no. 7, p. 1088-1103
Determining links between plant defence strategies is important to understand plant evolution and to optimize crop breeding strategies. Although several examples of synergies and trade-offs between defence traits are known for plants that are under attack by multiple organisms, few studies have attempted to measure correlations of defensive strategies using specific single attackers. Such links...
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In: Plant, Cell & Environment, 2011, vol. 34, no. 8, p. 1267–1275
Plants attacked by leaf herbivores release volatile organic compounds (VOCs) both locally from the wounded site and systemically from non-attacked tissues. These volatiles serve as attractants for predators and parasitoids. This phenomenon is well described for plant leaves, but systemic induction of VOCs in the roots has remained unstudied. We assessed the spatial and temporal activation of the...
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