Shrooms and sterility

Theoretically, if you found a way to sterilize a plant without killing it - that is, remove all the microorganisms that aid its life, and plant it into a soil with limited nutrients and no microorganisms that will aid the plant, it will soon die, too. But the thing is that plants can “catch” the aiding organisms from environment or carry them. Actually, we, Homo sapiens would die very soon if all our symbiotic microorganisms were removed. The thing is, that fungi probably have more limited range of aiding microorganisms (of which we know almost nothing) and therefore are more succeptible to the removal from nature.