Obligate symbiotic fungi that form associations with plants by entering their cortical cells without invading the plant cells membrane are called and include the genus obligate symbiotic fungi that form associations with plants by entering their cortical cells without invading the plant cells membrane are called and include the genus

Obligate symbiotic fungi that form associations with plants by entering their cortical cells without invading the plant cells membrane are called endomycorrhizae and include the genus Glomus. Many plants form associations called mycorrhizae with fungi that give them access to nutrients in the soil, protecting against disease and toxicities.  In these associations the fungi are integrated into the physical structure of the root, where the fungi colonize the living root tissue during active plant growth.

Obligate symbiotic fungi that form associations with plants by entering the cortical cells of plants without invading the plant cell's membrane are called endomycorrhizae and include the genus Glomus.  A mycorrhiza is a symbiotic association between a fungus and the roots of a vascular host plant. The term mycorrhiza refers to the role of the fungi in the plants' rhizosphere, its root system. Mycorrhizae play important roles in soil biology and soil chemistry.

The answer would be abrasion.