EFFECTS OF LIGHT AND DARK ON PHOSPHORYLASE ACTIVITY IN THE PARABOLOID OF THE ACCESSORY CONE OF THE CHICK RETINA

抄録

Glycolytic aspect in dark and light adapted retinas of the chicks was studied by the use of histochemical techniques for phosphorylase activity.
In the dark adapted retina, the paraboloid of the accessory cone contained synthesized polyglucose particles which were approximately 300 Å in diameter. These particles were less stainable with lead citrate and located in the cytoplasmic matrices. In the retina incubated in the medium for phosphorylase activity under exposure to light, synthesized polyglucose particles in the paraboloid varied from 95 to 380 Å in diameter and were less stainable with lead citrate. Synthesized polyglucose particles in the accessory cone were so many that the tubular structure was flattened and the cytoplasm was expanded. Therefore, phosphorylase activity in the accessory cone of the chick retina is higher in light adaptation than in dark adaptation.