Terpene Synthase Genes

Terpene synthase genes are the genetic instructions that encode enzymes responsible for synthesizing terpenes—the volatile organic compounds that define cannabis aroma and flavor profiles. These genes are expressed in specialized plant cells called trichomes, where terpene synthase proteins catalyze the conversion of precursor molecules (geranyl pyrophosphate and farnesyl pyrophosphate) into hundreds of distinct terpene structures. Different cannabis cultivars express different combinations of terpene synthase genes, creating the chemical diversity observed across strain families. Lineage records frequently report that selective breeding for specific aromas correlates with inheritance patterns in terpene synthase gene clusters. Understanding these genetic mechanisms has become foundational to modern cannabis breeding programs seeking to stabilize or enhance aromatic profiles.

Breeders use terpene synthase gene expression profiling to select parents with desired aroma profiles and predict offspring chemical diversity. Mapping terpene synthase gene variants enables more targeted crossing strategies to concentrate desirable volatile compounds across generations.