Caliban07
Aquarium Advice Addict
The rootone or starter is similar but a different thing. The fungi will grow and colonize on the root and though you cut the root back it would still be there, and colonize like a sponge of BB rinsed off all but a corner would still be able to grow it back. The M. fungi (sorry can't spell it w/o looking it up) will cause the 1 root to sprout to 10 roots (I am making up the numbers but the process is the same), where as using a fertilizer might make it sprout off a few, and then the M. fungi keeps those going in hyper drive too, as they colonize. It keeps going.
Basically it causes a mutation which is beneficial for plant growth and health. Learned of this in Master Gardener plant classes, and yes it was a long time ago, and it was a long time ago before that they began using this.
Thanks Autumn. That very may well explain the oversized roots.