A great diversity in mechanisms of resistance - Non-host resistance - Mechanisms

7 important questions on A great diversity in mechanisms of resistance - Non-host resistance - Mechanisms

What are the mechanisms observed in non-host plants inoculated with unadapted pathogens?

- Mechanisms are diverse.
- Infection often stagnates early in infection process.

What may happen to soil-borne pathogens and nematodes in relation to non-host plant structures?

- Soil-borne pathogens and nematodes may not stimulate germination.

How do spores of leaf pathogens usually germinate?

- Usually germinate on non-host plants.
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What can occur when stoma penetrating pathogens, like rust fungi, land on non-host species?

- May fail to locate stoma or infection process stagnates post-germination.

When does the infection process on non-hosts typically abort if stoma penetration is successful?

- Right after stoma penetration or during/after plant cell penetration.

What is associated with the blocking of plant cell wall penetration?

- Formation of papillae is usually associated.

When can the initiation of necrosis be controlled and how does it differ from hypersensitivity resistance?

- When plant cell wall is penetrated successfully.
- Controlled differently than in hypersensitivity resistance.

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