Adding ACF SR is really just adding functions to your soil. These functions supply extra nutrients in bio-available form to your crop. These functions include growth hormones and digestion of complex organics. The entire biomass benefits from the functions provided by ACF SR.
With these functions supplied by ACF-SR, the growth, diversity, and health of bio-flora is optimised. Rather than think about what species ACF-SR supplies, instead realize that ACF-SR provides the full spectrum of Plant growth-promoting functions.