Apart from the mentioned Glomus mosseae, this article should be placed in the Cannabis infirmary. Glomus might be the most abundant genus of arbuscular mycorrhizal fungi... though believed to be symbiotic in most cases, such fungi may also be parasitic in nature.
[Sarcasm]BTW there's a paper dedicated to that specific fungi and its 'benefits' to hemp: CLICK ME (abstract only, it's not a free publication, but it'll do to show you the concept)[/Sarcasm]