The simple version of Mycorrhiza.

A mycorrhiza is a symbiotic association between a fungus and a plant, in which fungal hyphae and plant roots become interconnected and form an interface on the cellular level.

A mycorrhiza is a symbiotic association between a fungus and a plant, in which fungal hyphae and plant roots become interconnected and form an interface on the cellular level. The term mycorrhiza refers to the role of the fungus in the plant's rhizosphere, the plant root system and its surroundings. Mycorrhizae play important roles in plant nutrition, soil biology, and soil chemistry.