Light Stress Compounds

Light stress compounds are secondary metabolites that cannabis plants produce in response to high-intensity light exposure, UV radiation, or photoperiod shifts. These include flavonoids, anthocyanins, and specialized terpenes that accumulate as the plant adapts to environmental pressure. Breeders and cultivators study these compounds because they correlate with plant vigor, pest resilience, and terpene profile development under specific light regimens. Understanding light stress responses helps geneticists identify cultivars with robust cannabinoid and terpene expression across varying cultivation conditions. Light stress compounds are distinct from nutrient-deficiency markers and represent active metabolic adaptation rather than plant distress.

Breeders working in controlled-environment agriculture select for cultivars that produce desired secondary metabolites under high-light conditions without compromising yield or cannabinoid potency. Light stress tolerance and compound expression are used as phenotype markers to stabilize traits across different grow environments.