Genetic variation in anti-herbivore chemical defences in an invasive plant
نویسندگان
چکیده
منابع مشابه
Herbivore-induced, indirect plant defences.
Indirect responses are defensive strategies by which plants attract natural enemies of their herbivores that act as plant defending agents. Such defences can be either constitutively expressed or induced by the combined action of mechanical damage and low- or high-molecular-weight elicitors from the attacking herbivore. Here, we focus on two induced indirect defences, namely the de novo product...
متن کاملSpecificity of herbivore-induced plant defences.
In addition to induced direct defence, plants can defend themselves indirectly by improving the effectiveness of enemies of herbivores. Plants can respond to arthropod herbivory with the induction of a blend of volatiles that attracts predators and/or parasitoids of herbivores. Carnivorous arthropods can discriminate between infested plants and mechanically wounded plants, and between plants in...
متن کاملPlant Defences Against Herbivore and Insect Attack
The story of Adam and Eve links eating a forbidden fruit with death in the cycle of human existence (Genesis 3:1– 24). Indeed, to avoid poisoning, herbivores and omnivores such as humans must be cautious in choosing which plants and plant parts to eat. A prevailing hypothesis is that the nearly ubiquitous antiherbivore metabolites in plants were selected by coevolution with herbivores. Likewise...
متن کاملVariation in herbivore-mediated indirect effects of an invasive plant on a native plant.
Theory predicts that damage by a shared herbivore to a secondary host plant species may either be higher or lower in the vicinity of a preferred host plant species. To evaluate the importance of ecological factors, such as host plant proximity and density, in determining the direction and strength of such herbivore-mediated indirect effects, we quantified oviposition by the exotic weevil Rhinoc...
متن کاملIntraspecific variation in a generalist herbivore accounts for differential induction and impact of host plant defences.
Plants and herbivores are thought to be engaged in a coevolutionary arms race: rising frequencies of plants with anti-herbivore defences exert pressure on herbivores to resist or circumvent these defences and vice versa. Owing to its frequency-dependent character, the arms race hypothesis predicts that herbivores exhibit genetic variation for traits that determine how they deal with the defence...
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ژورنال
عنوان ژورنال: Journal of Ecology
سال: 2012
ISSN: 0022-0477
DOI: 10.1111/j.1365-2745.2012.01980.x