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Fig. 39-29SignalHypersensitiveresponseSignal transductionpathwaySignaltransductionpathwayAcquiredresistanceAvirulentpathogenR-Avr recognition andhypersensitive responseSystemic acquiredresistance
Systemic Acquired Resistance• Systemic acquired resistance causessystemic expression of defense genes and is along-lasting response• Salicylic acid is synthesized around theinfection site and is likely the signal thattriggers systemic acquired resistanceCopyright © 2008 Pearson Education, Inc., publishing as Pearson Benjamin Cummings
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Chapter 39Plant Responses to Intern
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Fig. 39-1
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• A potato left growing in darkne
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• A potato’s response to light
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Reception• Internal and external
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Fig. 39-4-1Reception1 2Transduction
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Fig. 39-4-3CellwallReception1 2Ligh
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Transcriptional Regulation• Speci
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De-Etiolation (“Greening”) Prot
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The Discovery of Plant Hormones•
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Fig. 39-5RESULTSControlLightShadeds
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Fig. 39-5bRESULTSDarwin and Darwin:
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Fig. 39-5cRESULTSBoysen-Jensen: pho
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Fig. 39-6RESULTSExcised tip placedo
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Table 39-1
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Fig. 39-7RESULTSCell 1100 µmCell 2
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Fig. 39-8Cross-linkingpolysaccharid
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Auxins as Herbicides• An overdose
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Cytokinins• Cytokinins are so nam
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Control of Apical Dominance• Cyto
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Anti-Aging Effects• Cytokinins re
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Stem Elongation• Gibberellins sti
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Fig. 39-10(b) Gibberellin-induced f
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Fig. 39-111 Gibberellins (GA)send s
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Abscisic Acid• Abscisic acid (ABA
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Fig. 39-12Early germinationin red m
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Ethylene• Plants produce ethylene
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Fig. 39-130.00 0.10 0.20 0.40 0.80E
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Fig. 39-14ein mutantctr mutant(a) e
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Leaf Abscission• A change in the
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Fruit Ripening• A burst of ethyle
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Concept 39.3: Responses to light ar
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Fig. 39-161.0436 nmPhototropic effe
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Fig. 39-16bLightTime = 0 minTime =
Page 69 and 70: Blue-Light Photoreceptors• Variou
Page 71 and 72: Phytochromes and Seed Germination
Page 73 and 74: • Red light increased germination
Page 75 and 76: Fig. 39-UN1Red lightP rP frFar-red
Page 77 and 78: Fig. 39-19SynthesisP rRed lightP fr
Page 79 and 80: Biological Clocks and Circadian Rhy
Page 81 and 82: • Circadian rhythms are cycles th
Page 83 and 84: Photoperiodism and Responses to Sea
Page 85 and 86: Critical Night Length• In the 194
Page 87 and 88: Fig. 39-2124 hours(a) Short-day (lo
Page 89 and 90: Fig. 39-2224 hoursRRFRRFRRRFRRFRCri
Page 91 and 92: A Flowering Hormone?• The floweri
Page 93 and 94: Meristem Transition and Flowering
Page 95 and 96: Gravity• Response to gravity is k
Page 97 and 98: Fig. 39-24Statoliths20 µm(a) Root
Page 99 and 100: Mechanical Stimuli• The term thig
Page 101 and 102: • Thigmotropism is growth in resp
Page 103 and 104: Fig. 39-26ab(a) Unstimulated state(
Page 105 and 106: Environmental Stresses• Environme
Page 107 and 108: Flooding• Enzymatic destruction o
Page 109 and 110: Salt Stress• Salt can lower the w
Page 111 and 112: Cold Stress• Cold temperatures de
Page 113 and 114: Defenses Against Herbivores• Herb
Page 115 and 116: • Plants damaged by insects can r
Page 117 and 118: • A virulent pathogen is one that
Page 119: The Hypersensitive Response• The
Page 123 and 124: Fig. 39-UN3Photoreversible states o
Page 125 and 126: Fig. 39-UN5
Page 127 and 128: 5. Distinguish between short-day, l
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