Photosynthetic Metabolism In The Cyanophyta Oscillatoria-Rubescens Dc .2. Carbon Metabolism Under Nitrogen Starvation

Short term14C labelling experiments and enzymatic activities related to primary pathways of photosynthesis have been studied in the cyanophytaOscillatoria rubescens D.C. from axenic cyclostat cultures. Responses of samples from cultures with different amounts of nitrogen are presented and compared. Variations in photosynthetic pigments are used to quantify the degree of nitrogen starvation at different levels.