Plants make terpenoids in small amounts, and we use them in pharmaceuticals and fragrances
Turning on and off fragrance production in plants - plant science news

Researchers have identified the key enzymes that switch on and off the production of terpenoids, carbon-rich compounds that are used in fragrances, flavorings, biofuels and pharmaceuticals. These for us useful compounds are made in low quantities by plants, and extracting the mis costly and impractical. Now that the metabolic pathways that control the production of terpenoids in plants is known, researchers believe that it will become possible to develop efficient methods to obtain sufficient amounts of these useful compounds.

Read the full story: Salk Institute
Scientific publication: Nature Plants