Sesquiterpene Synthases

Sesquiterpene synthases are a class of enzymes that catalyze the formation of sesquiterpenes—15-carbon volatile compounds—from farnesyl pyrophosphate (FPP) precursors. In cannabis, these enzymatic pathways produce compounds commonly associated with woody, earthy, spicy, and herbal aromatic profiles, including β-caryophyllene, β-myrcene, and α-humulene. Sesquiterpene synthase expression varies significantly across cultivars and is influenced by developmental stage, environmental conditions, and underlying genotype. Understanding these enzymes is crucial for breeders seeking to predict or stabilize particular terpene profiles, as multiple synthase genes often work in concert. The biosynthetic regulation of sesquiterpene synthases remains an active area of cannabis breeding research, with lineage records frequently reporting correlations between specific synthase activity patterns and strai

Breeders working with sesquiterpene profiles use knowledge of synthase gene expression to guide cultivar selection and crossing programs. Identifying plants with elevated or balanced sesquiterpene synthase activity helps stabilize desired woody, spicy, or fuel-like aromatic traits across generations.