Milkweed latex and cardenolide induction may resolve the lethal plant defence paradox
نویسندگان
چکیده
منابع مشابه
Tests of the coupled expression of latex and cardenolide plant defense in common milkweed (Asclepias syriaca)
The coexpression of plant resistance traits suggests the hypothesis that they may have complementary functions in defense against herbivory. To address the extent to which defensive traits are necessarily coupled in plants grown under various conditions, we focused on latex and cardenolides, two potent defenses of milkweeds. We measured defenses across ontogenetic stages, different biotic and a...
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Despite sequestration of toxins being a common coevolutionary response to plant defence in phytophagous insects, the macroevolution of the traits involved is largely unaddressed. Using a phylogenetic approach comprising species from four continents, we analysed the ability to sequester toxic cardenolides in the hemipteran subfamily Lygaeinae, which is widely associated with cardenolide-producin...
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defence of common milkweed Asclepias syriaca to two lepidopteran herbivores Robin A. Bingham* and Anurag A. Agrawal Department of Natural and Environmental Sciences, Western State College of Colorado, Gunnison, CO 81231, USA; Department of Ecology and Evolutionary Biology, Cornell University, Ithaca, NY 14853, USA; and Department of Entomology, and Center for a Sustainable Future, Cornell Unive...
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Toxic plants with sequestering specialists are presented with a problem because plant derived toxins protect herbivores against natural enemies. It has been suggested that early induction of toxins and later relaxation of these defenses may help the plant resolve this problem because neonate caterpillars incur the physiological cost of dealing with toxins in early life, but are denied toxins wh...
متن کاملPlant Disease and Defence
Pathogens have evolved elaborate mechanisms to invade plant tissues and cause disease. Plants, in turn, respond to pathogen infection by expressing multiple layers of resistance. Once low energy ‘basal’ defences of plant cells have been overcome by pathogens, the plant can employ a more energy costly system of nonself recognition that triggers an ‘acute’ immune response. The survival of plants ...
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ژورنال
عنوان ژورنال: Entomologia Experimentalis et Applicata
سال: 1996
ISSN: 0013-8703,1570-7458
DOI: 10.1111/j.1570-7458.1996.tb00916.x