Abstract
In the wild-type and colorless mutant cells of Chlorella kessleri grown with glucose as a sole carbon source in the dark, the uptakes of hexose and of acetate were reduced by up to 50% by irradiation with white light. Irradiation of the colorless mutant cells with white light resulted in photo-bleaching of Chl(lide) a. On the contrary, the photo-inhibitions of hexose and acetate uptake were not observed in a chlorophyll-less yellow mutant of Chlorella kessleri. Thus the photo-inhibitions of hexose and of acetate uptake observed in the Chlorella cells are assumed to be caused by active oxygen produced in the process of photo-bleaching of Chl(lide) a.
