Photooxidation of cytochromes in leaves and chloroplasts at liquid-nitrogen temperature.

Ascorbic Acid/pharmacology Cell Fractionation Chloroplasts/drug effects,metabolism,radiation effects Cold Temperature Cytochromes/metabolism Darkness Electron Transport Ferricyanides/pharmacology Freezing Light Models, Biological Models, Chemical Mutation Nitriles/pharmacology Nitrogen Oxidation-Reduction Oxygen Phenylhydrazines/pharmacology Photochemistry Plants/metabolism,radiation effects Potentiometry Radiation Effects Spectrophotometry Time Factors Urea/pharmacology

Cytochromes Ferricyanides Nitriles Phenylhydrazines Urea Nitrogen Ascorbic Acid Oxygen