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Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332

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BuyFindarrow_forward

Biology: The Unity and Diversity o...

15th Edition
Cecie Starr + 3 others
ISBN: 9781337408332
Textbook Problem
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Chapter 30, Problem 4DAA, Volatile Secondary Metabolites in Plant Stress Responses In 2007, researchers Casey Delphia, Mark , example  1

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 30.19.

Chapter 30, Problem 4DAA, Volatile Secondary Metabolites in Plant Stress Responses In 2007, researchers Casey Delphia, Mark , example  2

FIGURE 30.19 Volatile (airborne) compounds produced by tobacco plants in response to predation by different insects. Plants were untreated (C), attacked thrips (T), mechanically wounded (W), mechanically wounded and attacked by thrips (WT), attacked by budworms (HIV), or attacked by budworms and thrips (HVT). Values are in nanograms/day.

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

Summary Introduction

To determine: The chemicals that are produced in response to predation by budworms, but not in response to predation by thrips.

Concept introduction: Volatile compounds are secondary metabolites produced by plants. They attract insects for pollination as well as provide defensive signaling systems against pests and diseases. Secondary metabolites are produced in response to disease or some predation attack.

Explanation

As given in the problem statement, the researchers studied the production of different volatile chemicals by tobacco plants in response to predation by insects- western flower thrips and tobacco budworms. Refer Fig. 30.19, “Volatile (airborne) compounds produced by tobacco plants in response to predation by different insects” in the textbook. It shows the results of volatile compounds produced (ng/ day) in untreated plants (C), pl...

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