Lecture 41 - BioNB 221, Lecture 41: Plant Behavior 5...

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BioNB 221, Lecture 41: Plant Behavior 5 December 2008 Robert Raguso, Dept. of NBB Cornell University
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Do Plants Behave? 1. An Overview of Plant Defense: Predator Avoidance 2. Induced Responses to Herbivores (= Predators) 3. Plant-Plant Communication: Talking Trees? Foraging (for light, CO2, nitrogen, water) Competition (mostly with other plants) Reproduction (fertilization/pollination, dispersal) Defense!
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1. Reducing Detection misdirection: mobbing? bluff? crypsis? Predator Avoidance: Do Plants share Animal Strategies? NO. Avian Fruit Dispersal! MAYBE. Phony Herbivore Damage? Namaqualand stone plants
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2. If Detected, Reducing Attack honest deterrence (arms)? mimicry? employ bodyguards? advertised unprofitability? Predator Avoidance: Do Plants share Animal Strategies? Aposematism? Variation among individuals…ODORS? Ant Guards Passiflora Egg Mimicry Cacti!
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3. If Attacked, Reducing Capture group vigilance? selfish herd? predator dilution or satiation? Predator Avoidance: Do Plants share Animal Strategies? Automimicry (milkweeds) or Associational Resistance? Volatile Priming in Clonal Stands? Masting years for Oaks
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4. If Captured, Reducing Consumption noxious secretions? false head, eyespots, startle colors? calls for help?
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Lecture 41 - BioNB 221, Lecture 41: Plant Behavior 5...

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