Podcast
Questions and Answers
What is the primary role of orchid mycorrhizal fungi in relation to orchids?
What is the primary role of orchid mycorrhizal fungi in relation to orchids?
- They aid in seed germination and early development. (correct)
- They provide structural support to orchid roots.
- They protect orchids from herbivores.
- They assist in photosynthesis.
Which of the following accurately describes pelotons?
Which of the following accurately describes pelotons?
- Root hair extensions that enhance water absorption.
- A type of nutrient capsule that orchids produce.
- Coiled hyphal structures found within root cells of orchids. (correct)
- Fungal structures that can form a sheath around plant roots.
What type of mycorrhizae are associated with the Ericaceae family?
What type of mycorrhizae are associated with the Ericaceae family?
- Endomycorrhizae
- Arbutoid mycorrhizae (correct)
- Ectomycorrhizae
- Orchid mycorrhizae
How do mycorrhizae contribute to sustainable agriculture?
How do mycorrhizae contribute to sustainable agriculture?
Which example illustrates the use of mycorrhizal inoculants in horticulture?
Which example illustrates the use of mycorrhizal inoculants in horticulture?
What is a key benefit of ectomycorrhizal fungi in forestry?
What is a key benefit of ectomycorrhizal fungi in forestry?
What kind of structure do arbutoid mycorrhizae form around root tips?
What kind of structure do arbutoid mycorrhizae form around root tips?
Which plant is an example of one that forms arbutoid mycorrhizal associations?
Which plant is an example of one that forms arbutoid mycorrhizal associations?
Flashcards
Orchid Mycorrhizae
Orchid Mycorrhizae
Fungi that form associations with orchid roots, essential for seed germination and growth.
Pelotons
Pelotons
Coiled hyphal structures formed within the root cells of orchids during mycorrhizae association.
Rhizoctonia spp.
Rhizoctonia spp.
Common fungi that associate with orchids, supplying essential nutrients for growth.
Ceratobasidium cornigerum
Ceratobasidium cornigerum
Signup and view all the flashcards
Arbutoid Mycorrhizae
Arbutoid Mycorrhizae
Signup and view all the flashcards
Hyphal Sheath
Hyphal Sheath
Signup and view all the flashcards
Sustainable Agriculture
Sustainable Agriculture
Signup and view all the flashcards
Mycorrhizal inoculants in Horticulture
Mycorrhizal inoculants in Horticulture
Signup and view all the flashcards
Study Notes
Orchid Mycorrhizae
- Orchid mycorrhizal fungi are crucial for orchid seed germination and early growth, as orchid seeds lack sufficient nutrients.
- These fungi form coiled hyphal structures (pelotons) inside orchid root cells.
- The Orchidaceae family (orchids) are the host plants.
- Rhizoctonia spp. and Ceratobasidium cornigerum are examples of fungi that form these associations, supplying essential nutrients.
Arbutoid Mycorrhizae
- Similar to ectomycorrhizae, but specific to plant families like Ericaceae.
- Form a dense hyphal sheath around roots and penetrate root cells.
- Arbutus and Arctostaphylos plants are hosts.
- Arbutus menziesii (Pacific madrone) forms arbutoid associations, improving nutrient uptake and soil stability.
- Arctostaphylos uva-ursi (Bearberry) is another example.
Applications in Agriculture
Sustainable Agriculture
- Mycorrhizae reduce the need for fertilizers and pesticides.
- Inoculating maize with arbuscular mycorrhizal fungi reduces phosphorus fertilizer needs, improving sustainability and reducing environmental impact.
Horticulture
- Mycorrhizal inoculants enhance ornamental plant growth and health.
- Applied to nursery-grown plants like roses to improve establishment, growth, and resistance to soil diseases.
Forestry
- Mycorrhizae are vital for forest tree establishment and growth.
- Used in reforestation projects to improve seedling survival and growth in degraded areas, aiding forest regeneration and ecosystem recovery.
Crop Production
- Mycorrhizal fungi enhance crop growth and yield in maize, wheat, rice, and legumes.
- Inoculating wheat with arbuscular mycorrhizal fungi improves nutrient intake and grain yield.
Studying That Suits You
Use AI to generate personalized quizzes and flashcards to suit your learning preferences.
