Unit 11 - Fungal Diseases

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11 Terms

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What is a fungus?

A single or multi-celled organism that lives by decomposing and absorbing the organic material in which they grow.

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What organisms do Fungi comprises?

Mushrooms, molds, mildews, rusts, and yeasts.

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What are most diseases caused by?

Fungi

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How do Fungi enter plants?

They may enter a plant by direct penetraton through the cuticle, lenticels/stomata, or via wounds.

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How do Fungi reproduce?

By dispersal of spores, commonly dispersed by air movement (wind).

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Types of Fungi

  • Saprophytic Fungus

  • Obligate Fungus

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Saprophytic Fungus

Fungus that obtains nourishment from non-living organisms.

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Obligate Fungus

Fungus that needs a living host to survive.

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Hyphae

Threadlike filaments found on fungus.

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Collective term for Hyphae

Mycelium

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Examples of Fungal Diseases

  • Peach leaf curl — Taphrina deformans

  • Apple scab — Venturia inaequalis

  • Black spot of roses — Diplocarpon rosae

  • Powdery mildew of apples — Podosphaera leucotricha

  • Damping off of vegetables

  • Grey mold of strawberries — Botrytis cinerea