Über die prompte und verzögerte Fluoreszenz des Chlorophylls während der Photomorphogenese des photosynthetischen Apparates grüner Pflanzen / The Prompt and Delayed Light Emission of Chlorophyll During Photomorphogenesis of the Photosynthetic Apparatus of Green Plants

Abstract

The greening process of etiolated bean and maize leafs was followed by measuring the prompt and delayed light emission of chlorophyll. Above all it was concluded that the development of photosynthetic Systems I and II could be observed by studying the formation of the Kautsky -effect. First light-induced changes in the chlorophyll fluorescence intensity do not occur until 2,5 h of irradiation. It could be shown that they reflect the function of PS II reaction centers and under anaerobic conditions the electron flow between PS II and PS I. Full active electron flow from water to NADP is first to presume with the appearence of all characteristics of the Kautsky -effect (O—I—D—P curve at 3 h of irradiation).