Plant–Environment Interactions: Accumulation of Hypericin in Dark Glands of Hypericum perforatum

Abstract

The concentration of Hy-G in various organs of H. perforatum plants is dependent on the number of dark glands, their size or area, not on the location of the dark glands on the plant. The study provides the first experimental evidence that Hy-G is synthesized and accumulates in dark glands.