If the soil fungi are removed from plants 'roots, the plants wither and die. In the natural cycle of life, saprophytic fungi are also indispensable. If it were not for the work they do decomposing organic materials, the nutrients bound up in dead forest matter could not be released to enrich the soil, and the natural world would become cluttered with the debris of dead plants and animals.
在大自然的循環中，更少不了寄生性與腐生性真菌，若非真菌的分解，枯死的林木養分無法釋出，落花無法化為春泥更護花，自然界將充斥著許許多多動植物殘骸。