Cbdas Gene

CBDA synthase (CBDAS) is an enzyme encoded by genetic sequences in Cannabis that catalyzes the conversion of cannabidiolic acid (CBDA) from cannabigerolic acid (CBGA) during plant development. Unlike a terpene, CBDAS is a protein-encoding gene that directly influences the biosynthetic pathway determining whether a plant produces primarily CBD or THC-dominant chemotypes. Lineage records frequently report that CBDAS activity levels vary significantly across cultivars, with some strains expressing high enzyme activity and others showing minimal function. Breeders working in high-CBD breeding programs actively select for stable CBDAS expression to maintain consistent cannabinoid profiles across generations. Understanding CBDAS genetics is foundational for developing true-breeding CBD-dominant lines.

Breeders use CBDAS gene expression as a primary selection marker when developing CBD-dominant cultivars, as stable inheritance of functional CBDAS ensures offspring maintain high CBD acid production. Phenotyping seedlings for CBDAS activity helps accelerate selection cycles in breeding programs targeting medical and industrial hemp applications.