Volatile Secondary Metabolites in Plant Stress Responses In 2007, researchers Casey Delphia, Mark Mescher, and Consuelo De Moraes (pictured at left) published a study on the production of different volatile chemicals by tobacco plants in response to predation by two types of insects: western flower thrips and tobacco budworms. Their results are shown in FIGURE 30.20 . Volatile Compound Produced Treatment C T W WT HV HVT Myrcene 0 0 0 0 17 22 β-Ocimene 0 433 15 121 4.299 5.315 Linatod 0 0 0 0 125 178 indole 0 0 0 0 74 142 Nicotine 0 0 233 160 390 538 β-Etemene 0 0 0 0 90 102 β-Caryophyllene 0 100 40 124 3.704 6.166 α-Humutene 0 0 0 0 123 209 Sesquiterpene 0 7 0 0 219 268 α-Farnesene 0 15 0 0 293 457 Caryophyltene oxide 0 0 0 0 89 166 Total 0 555 288 406 9.423 13.563 FIGURE 30.20 Volatile (airborne) compounds produced by tobacco plants ( Nicotiana tabacum ) in response to predation by Different inserts. Plants were untreated (C), attacked by thrips (T), mechanically wounded (W). mechanically wounded and attacked by thrips (WT), attacked by budworms (HVJ, or attacked by budworms and thrips (HVTJ. Values are nanograms/day. 4. Are any chemicals produced in response to predation by budworms, but not in response to predation by thrips?

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Biology: The Unity and Diversity o...

14th Edition
Cecie Starr + 3 others
Publisher: Cengage Learning
ISBN: 9781305073951
BuyFind

Biology: The Unity and Diversity o...

14th Edition
Cecie Starr + 3 others
Publisher: Cengage Learning
ISBN: 9781305073951

Solutions

Chapter 30, Problem 4DAA
Textbook Problem

Volatile Secondary Metabolites in Plant Stress Responses In 2007, researchers Casey Delphia, Mark Mescher, and Consuelo De Moraes (pictured at left) published a study on the production of different volatile chemicals by tobacco plants in response to predation by two types of insects: western flower thrips and tobacco budworms. Their results are shown in FIGURE 30.20.

Volatile Compound Produced       Treatment    
C T W WT HV HVT
Myrcene 0 0 0 0 17 22
β-Ocimene 0 433 15 121 4.299 5.315
Linatod 0 0 0 0 125 178
indole 0 0 0 0 74 142
Nicotine 0 0 233 160 390 538
β-Etemene 0 0 0 0 90 102
β-Caryophyllene 0 100 40 124 3.704 6.166
α-Humutene 0 0 0 0 123 209
Sesquiterpene 0 7 0 0 219 268
α-Farnesene 0 15 0 0 293 457
Caryophyltene oxide 0 0 0 0 89 166
Total 0 555 288 406 9.423 13.563

FIGURE 30.20 Volatile (airborne) compounds produced by tobacco plants (Nicotiana tabacum) in response to predation by Different inserts. Plants were untreated (C), attacked by thrips (T), mechanically wounded (W). mechanically wounded and attacked by thrips (WT), attacked by budworms (HVJ, or attacked by budworms and thrips (HVTJ. Values are nanograms/day.

4. Are any chemicals produced in response to predation by budworms, but not in response to predation by thrips?

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