Tomato Pathology and Defense Mechanisms
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Questions and Answers

What significant impact does the bacterial canker disease caused by Clavibacter michiganensis ssp.michiganensis have on tomato production?

  • Improves the nutritional value of tomatoes
  • Increases tomato yield significantly
  • Has no effect on tomato production
  • Leads to severe yield losses (correct)
  • Which PR genes are examined in relation to salicylic acid's influence in the research?

  • PR1 and Glu B
  • Glu A and PR1a (correct)
  • PR3 and Glu D
  • Glu C and PR2
  • What is one of the research objectives regarding the effect of bacterial canker on tomato plants?

  • Investigate genetic modifications in tomatoes
  • Assess the impact on pest resistance
  • Analyze the effect on growth, shape, and biochemical changes (correct)
  • Examine the influence of water availability
  • What role does salicylic acid (SA) play in the research regarding tomato plants?

    <p>It enhances the expression of PR genes</p> Signup and view all the answers

    What critical factor is being analyzed alongside the expression of PR genes in the research?

    <p>Antibacterial activity of PR proteins against Cmm</p> Signup and view all the answers

    Study Notes

    Problem Statement

    • Bacterial canker disease (Clavibacter Michiganders ssp. michiganensis - Cmm) significantly impacts tomato production globally.
    • Canker disease causes substantial yield losses.
    • Systemic infection and plant death are caused by the pathogen invading the vascular system.
    • There's a need to explore defense mechanisms to minimize crop losses.

    Research Questions

    • How does salicylic acid (SA) influence the expression of Pathogenesis-Related (PR) genes (Glu A and PR1a) in tomatoes infected with Cmm?
    • What is the antibacterial activity of these PR proteins against Cmm in different tomato varieties?

    Research Objectives

    • Investigate the impact of bacterial canker on the expression of PR genes Glu A and PR1a.
    • Examine the effect of bacterial canker on the growth, shape, and biochemical changes in tomato plants.
    • Study how salicylic acid affects the expression of PR genes Glu A and PR1a.
    • Analyze how salicylic acid influences growth, shape, and biochemistry in both bacterial canker-infected and healthy tomato plants.

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    Description

    This quiz explores the impact of bacterial canker disease on tomato plants, particularly focusing on the expression of Pathogenesis-Related genes. It also examines how salicylic acid influences these genes amid the infection. Test your knowledge on plant pathology and defense strategies in agriculture.

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