What is a deciduous forest symbiotic relationship?

The most notable of forest symbiotic relationships is of that between trees and mycorrhizae. Mycorrhizae are symbiotic associations that form between the roots of most plant species and fungi. This symbiotic relationship is characterized by the equitable movement of sugars to the fungus and inorganic nutrients fixed by the fungi move into the plant, thereby providing a critical linkage between the plant root and soil. The fungal hyphae take up nutrients from soil solution and transport them to the root. By this mechanism, mycorrhizae increase the effective absorptive surface area of the plant. In nutrient-poor or moisture-deficient soils, nutrients taken up by extramatrical hyphae (hyphea existing within soil matrix) can lead to improved plant growth and reproduction.