Synthase Genes

Synthase genes are a category of genetic sequences responsible for encoding enzymes that catalyze the synthesis of secondary metabolites in cannabis, particularly cannabinoids and terpenes. These genes direct the plant's biochemical machinery to construct complex molecules from simpler precursors. In cannabis breeding, synthase gene expression—controlled by factors like genetics, environmental conditions, and plant maturity—influences the final cannabinoid and terpene profile. Breeders studying synthase genetics aim to understand the heritability of specific metabolite production pathways. Key synthase genes include CBDAS (cannabidiolic acid synthase) and CBGAS (cannabigerolic acid synthase), which branch the pathway toward CBD or THC-dominant phenotypes. This field remains active in both academic research and applied breeding programs.

Breeders working with synthase gene knowledge can make more informed crosses targeting specific cannabinoid ratios or terpene profiles. Understanding synthase expression helps identify parent plants likely to pass desired biochemical traits to offspring, though expression remains influenced by environment and epigenetics.