Soil Microbiome Volatile Compounds

Soil microbiome volatile compounds represent secondary metabolites produced by bacteria, fungi, and other microorganisms in growing media, which can influence plant root development and volatile expression. These compounds—including dimethyl disulfide, various alcohols, and organic acids—interact with rhizosphere ecology and may be absorbed or metabolically processed by cannabis plants during cultivation. While direct transfer of microbial volatiles into cannabis terpene profiles remains an active area of study, breeders and cultivators working with biological amendments report correlations between soil microbiome complexity and final plant aroma complexity. The mechanisms by which soil microbiota affect cannabis secondary metabolism are not fully characterized, making this an area of ongoing horticultural research rather than established breeding practice.

Breeders interested in terroir-linked phenotypes and cultivators using biological soil amendments monitor microbiome composition as a potential co-factor in terpene expression. Standardizing or documenting microbial ecology during breeding trials may help identify genetic-environment interactions that influence aroma profiles.