Microbial Volatile Interaction

Microbial Volatile Interaction (MVI) describes the chemical signaling and aroma compounds produced when cannabis plant tissues interact with beneficial or colonizing microorganisms—primarily fungi and bacteria in the rhizosphere and endosphere. Rather than a single aroma, MVI represents a dynamic process where microbial metabolites blend with plant-derived terpenes and volatile organic compounds (VOCs), creating secondary aromatic profiles not present in sterile cultivation. Common examples include earthy, musty, or umami-like notes often reported in soil-grown or mycorrhizal-heavy gardens. Lineage records and breeding trials increasingly document how specific microbial communities influence volatile phenotypes, independent of genetic terpene profiles. Understanding MVI is relevant for breeders optimizing cultivation environments and for researchers studying how plant-microbe partnership

Breeders and cultivation researchers use MVI frameworks to isolate whether aromatic variation stems from genetics, terroir, or microbial colonization. This knowledge supports selective breeding for strains compatible with specific soil biology or mycorrhizal inoculants.