Mycorrhiza literally means "fungus root." This is a symbiotic association between fungi and higher plants. The endomycorrhizae penetrate cortical cells of most plants with two main types of structure. The vesicles are thought to be mainly for storage and the arbuscules are thought to be mainly for nutrient exchange. The fungus receives energy from the plant, and the plant receives minerals (especially P) and water from the fungus. The last view of the movie shows hyphae and a spore outside the root.

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