Symbiotic associations I. Symbiosis A. Definition B. Types of symbiosis 1. commensalism 2. mutualism 3. competition 4. predation and parasitism II. Mycorrhiza.

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Presentation transcript:

Symbiotic associations I. Symbiosis A. Definition B. Types of symbiosis 1. commensalism 2. mutualism 3. competition 4. predation and parasitism II. Mycorrhiza A. Definition B. How fungi grow C. Mycorrhizal types 1. endomycorrhizae a. VA mycorrhizae b. orchid c. ericoid d. monotropoid 2. ectomycorrhizae III. Root nodules: legumes and rhizobium IV. Lichens

I. Symbiosis A. Definition B. Types of symbiosis 1. commensalism 2. mutualism 3. competition 4. predation, parasitism, and pathogenicity Symbiosis Symbiont one Symbiont two Example commensalism mutualism competition predation et al +o + = positive benefit - = negative o = no effect allelopathy + -

II. Mycorrhiza A. Definition B. How fungi grow mycorrhiza (fungus-root): relationship between plant roots and fungi mycorrhizae, mycorrhizal hypha, hyphae

C. Mycorrhizal types 1. endomycorrhizae a. VA mycorrhizae b. orchid c. ericoid d. monotropoid nitrogen Acid soils

2. ectomycorrhizae Amanita chanterelle

III. Root nodules: legumes and rhizobium N2N2

IV. Lichens crustose foliose fruticose

The end