They do this by extracting the nutrients from the soil, but then rather than trading them with the host, they hoard them in their network, so this makes them unavailable to the plant and other competing fungi.
Fazem isso, extraindo os nutrientes do solo, mas depois, em vez de os trocar com a planta hospedeira, armazenam-nos na sua rede, para os tornar indisponíveis à planta e a outros fungos concorrentes.