Secondary Metabolite Biosynthesis

Secondary metabolite biosynthesis refers to the genetic and biochemical pathways that cannabis plants use to produce compounds beyond those required for basic growth and survival. These pathways generate cannabinoids (THC, CBD, CBG), terpenes, and flavonoids—traits of primary interest in cannabis breeding and cultivation. Understanding secondary metabolite biosynthesis is central to modern cannabis genetics, as it reveals how different cultivars achieve distinct chemical profiles. Researchers and breeders study these pathways to predict compound accumulation, identify genetic bottlenecks, and develop new cultivars with targeted chemotypes. Secondary metabolite production is influenced by genetics, environmental stress, photoperiod, and plant maturity.

Breeders working in cannabinoid and terpene trait selection rely on knowledge of biosynthetic pathways to make informed crosses and phenotype selections. Understanding which genes regulate these pathways—such as CBDA synthase or terpene synthase families—enables more predictable breeding outcomes and accelerates the development of cultivars with consistent chemical profiles.