Symbiotic association of fungal hypae with plant roots is referred to as

The symbiotic association of fungal hyphae with plant roots is referred to as Mycorrhiza.
It is a mutual symbiotic association between a fungus and a plant. It refers to the role of the fungus in the plant’s rhizosphere, its root system. In this association, the fungus colonizes the host plant's root tissues, either intracellular or ectomycorrhizal fungi. Mycorrhizae play important roles in plant nutrition, soil biology and soil chemistry.