Mycorrhiza literally means "fungus root." This is a symbiotic association between fungi and higher plants. The ectomycorrhizae do not penetrate cortical cells and are active mainly on trees and shrubs. Features include a fungal mantle (layer of fungal tissue) surrounding the root and the Hartig net (hyphae among and between but not penetrating cortical cells). At the end of the movie, ectomycorrhizal hyphae can be seen in the soil--they are thought to be important in soil structure.

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