Brassicaceae, such as cabbage, broccoli, kale and mustard, are generally non-arbuscular-mycorrhizal. Other plants may use a different mycorrhizal association instead. Exceptions and context exist, so avoid treating a broad family-level rule as an absolute for every species. Check the plant and the fungal type together.
Keep the context.
Biological compatibility, successful colonisation and a measurable plant response are different questions. The growing conditions matter, and general research is not a promise of a particular result with MegaMyco.
References
Read the biology at its source. These references describe general science and study-specific findings.