Study Guide for Campbell Biology
11th Edition
ISBN: 9780134443775
Author: Lisa A. Urry, Michael L. Cain, Steven A. Wasserman, Peter V. Minorsky, Jane B. Reece, Martha R. Taylor, Michael A. Pollock
Publisher: PEARSON
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Chapter 39, Problem 3SYK
Summary Introduction
To describe: The steps in hypersensitive response and systemic acquired resistance (SAR) that result after plant-pathogen interaction that produces effectors that are recognized by plant’s R proteins.
Introduction: The hypersensitive response is a characteristic of resistance, among several kinds of incompatible interactions that take place between a pathogen and plant. When a pathogen enters into the cells of a resistant plant, a complex cascade of signaling occurs. These events result in the death of plant cells at the infection site so that the pathogen that has penetrated would perish.
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Distinguish between a hypersensitive response and systemicacquired resistance in plants
A tobacco plant has successfully fended off plant pathogen via hypersensitive response (HR).
(i)
What would you be able to observe on the plant and explain the processes that happened
at cellular level?
What are the benefits for the tobacco plant that has developed systemic acquired
resistance (SAR) in comparison to HR?
(ii)
(ii)
Name the chemical compounds responsible in triggering SAR and how would this
signal be transmitted?
1.
A) Describe the three steps (Reception, Transduction, Response) of de-etiolation (greening response) signal transduction in plants.
B) Describe a signal transduction (give the stimulus and response) that may occur in humans.
Chapter 39 Solutions
Study Guide for Campbell Biology
Ch. 39 - Prob. 1IQCh. 39 - What are the important steps in the transduction...Ch. 39 - What is the plans growth response? What types of...Ch. 39 - Explain how phytochrome can also indicate the...Ch. 39 - What are free-running periods?Ch. 39 - Indicate whether a short-day plant and a long-day...Ch. 39 - Prob. 7IQCh. 39 - Prob. 8IQCh. 39 - Prob. 9IQCh. 39 - Prob. 1SYK
Ch. 39 - Develop a concept map to illustrate your...Ch. 39 - Prob. 3SYKCh. 39 - Prob. 1TYKTCh. 39 - Prob. 2TYKTCh. 39 - Prob. 3TYKTCh. 39 - Prob. 4TYKTCh. 39 - Prob. 5TYKTCh. 39 - Prob. 6TYKTCh. 39 - Prob. 7TYKTCh. 39 - The body form within a species of plant may vary...Ch. 39 - Prob. 2TYKCh. 39 - Small molecules in the cell that amplify signals...Ch. 39 - According to the acid growth hypothesis, a. auxin...Ch. 39 - Which of the following situations would most...Ch. 39 - Prob. 6TYKCh. 39 - Prob. 7TYKCh. 39 - Prob. 8TYKCh. 39 - Prob. 9TYKCh. 39 - Prob. 10TYKCh. 39 - Prob. 11TYKCh. 39 - Prob. 12TYKCh. 39 - Prob. 13TYKCh. 39 - Prob. 14TYKCh. 39 - Prob. 15TYKCh. 39 - Which of the following is not a plant defense...Ch. 39 - Prob. 17TYK
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- Need help with the third onearrow_forwardPlant cells communicate in a variety of ways to elicit cellular responses. In the figure below the plant is responding the presence of light with the release of auxin. Auxin was first discovered for its ability to promote growth in plants. It is a plant hormone that inhibits the lengthening and stimulate the formation of lateral roots and root hairs. a) Describe the plant’s response to the presence of light. (refer to picture)arrow_forwardThe summer is not optimal for grape growing and you're searching in your memory for something regarding plant hormones. Explain 2 ways you could utilize plant hormones (choose from auxin, ethylene, cytokinin, gibberellin, abscisic acid, salicylic acid, jasonic acid) to compensate for a problem during growing. For each way:arrow_forward
- Describe the inluence of auxin on apical dominance.arrow_forwardCan the specific component of the plant immune system (the one using R genes) defend against both biotrophic and necrotrophic pathogens?arrow_forwardElaborate helps provided by the following materials/compounds in plant defense. (i) Phenolic compounds (ii) Trichomes (iii) Cutinarrow_forward
- How does the plant hypersensitive response differ from systemic acquired resistance (SAR)?arrow_forwardHormones and signal pathways Complete the following paragraph to describe signal transduction as it occurs within plants. Choices may be used more than once or not at all. Chemical signals called play an important role in a plant's ability to respond to a stimulus. These signals bind to receptors, the first step in a cellular response called a may be located in the plasma membrane, the cytoplasm, the nucleus, or the endoplasmic reticulum. The series of relay proteins or enzymes activated by the hormone binding the receptor make up the Some responses are immediate, while others require a like Ca*, to initiate a cellular response. The result of the transduction pathway is a which is often the transcription of specific genes, resulting in some measurable change. hormones reflex arc signal transduction pathway Signal transducers second messenger response Receptor proteins first messengerarrow_forwardPhenolics, spines, terpenes, cutins, defense related proteins and suberin are some examples of plant defense. Plants are evolving to put up a fight against plant pathogen invasion. (i) Classify them into TWO (2) main classes of plant defense. (ii) What are the roles of terpenes in plant defense?arrow_forward
- Explain why there are often trade-offs between plantgrowth and plant defense.arrow_forwardGive Detailed explanation Solution (don't give Handwritten answer)arrow_forwardDiscuss other morphological differences between sunny and shady set-ups of mung bean in relation to phototropic response of plants. Characteristics sunny shaded Leaf color Lime Green Pale Green Direction of Growth Grows upward towards the direction of sunlight Oriented in the direction of the light but growth is bent downwardarrow_forward
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