The Studies on the Spherical Bodies Containing Anthocyanins in Plant Cells, II. : The Effects of Light on the Pigmentation of Spherical Bodies in the Seedling Hypocotyls of the Radish Plant.

In order to answer the question whether anthocyanoplasts have the capacity of anthocyanin biosynthesis or not, the effects of light on their pigmentation were investigated using the seedling hypocotyls of the radish plant, Raphanus sativus L. Microscopic observations were carried out on slices which were prepared by cutting with a razor from the seedling hypocotyls of radish plants germinated under light or dark conditions. The cells of hypocotyls germinated under dark conditions bore some colorless spherical bodies, whereas those germinated under continuously light conditions had entirely red-colored bodies. The colorless bodies found in the cells of hypocotyls germinated under the dark condition turned red after they had transferred to light conditions. From these facts it was concluded that the anthocyanoplasts in radish hypocotyls have the capacity of light reaction indispensable for the anthocyanin biosynthesis.Article信州大学理学部紀要 23(1): 1-6(1988)departmental bulletin pape