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Plant Sensing and Communication$
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Richard Karban

Print publication date: 2015

Print ISBN-13: 9780226264677

Published to Chicago Scholarship Online: January 2016

DOI: 10.7208/chicago/9780226264844.001.0001

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Plant Responses to Herbivory

Plant Responses to Herbivory

(p.83) 6 Plant Responses to Herbivory
Plant Sensing and Communication

Richard Karban

University of Chicago Press

Risk of herbivore attack is heterogeneous and plants use information to evaluate their current or future risk and to adjust their defensive phenotypes accordingly. These induced plant responses will only be effective if cues reliably predict future risk. Since plants are made up of semi-autonomous modules that often communicate incompletely, many induced responses to herbivory are localized and increase heterogeneity in plant defensive traits. Vascular communication among organs of individual plants is often poor and many plants rely on volatile cues to coordinate systemic induced responses. Plants also defend themselves indirectly by attracting the predators and parasites of their herbivores; they offer rewards such as food or shelter and, in some cases, information (cues) that these carnivores find valuable.

Keywords:   cues, induced responses, indirect defenses, localized responses, reliability, risk, volatile communication

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