A great diversity in mechanisms of resistance - Broad resistance

12 important questions on A great diversity in mechanisms of resistance - Broad resistance

What are the most obvious mechanisms of resistance in plants known as?

- Known as broad resistance
- Effective against various types of potential attackers

Which plants exhibit broad resistance mechanisms?

- Potato and foxglove for identifiable mechanisms
- Milkweed for latex production

What type of compounds are glucosinolates?

- Glucosinolates are classical antiherbivore compounds in plants
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What are the two types of defense mechanisms in plants according to the text?

- Active mechanisms: Respond to pathogen attack.
- Passive mechanisms: Always present, independent of pathogen presence.

How do phytolaxelins function as an active defense in plants?

- Induced upon pathogen attack.
- Produced around the penetration or wounding site.
- Broad-range effectiveness against micro-organisms.

What is an example of a passive defense mechanism in potatoes?

- Alkaloids provide passive defense.
- Constantly present, regardless of pathogen presence.

What is the purpose of papillae in plant defense?

- Formed as cell wall appositions against fungi.
- Limits pathogen penetration by reinforcing cell walls.

What are PR proteins and when are they produced?

- Pathogenesis-related (PR) proteins.
- Produced in response to infection or damage.

What types of stress can lead to the production of PR proteins in plants?

Stress leading to PR protein production includes heavy metals in the soil and plant senescence.

How are PR proteins distributed in plants that produce them?

PR proteins occur systemically throughout the whole plant.

What benefit do plants gain by producing PR proteins?

Plants with PR proteins display elevated resistance to many attackers.

What is the phenomenon called when plants acquire resistance through PR protein production?

The phenomenon is called induced resistance or systemically acquired resistance.

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