Chlorophyll-protein complexes from green algae and higher plants. Heterogeneity of chloroplast complexes from dimorphous tissue of C4 plant leaves

It was demonstrated that the decrease of the activity of photosystem II in agranal chloroplasts of bundle sheath cells of malate C4 plants is due to a loss of the chlorophyll-protein complex of this photosystem. This is paralleled with an increase in the relative amount of the chlorophyll--protein complex of photosystem I and a partial loss of the light-harvesting pigmentprotein complex. These two events may account for the high activity of photosystem I and for the low content of chlorophyll b in the plastids. The cumulative data are indicative of a close interrelationship between the granal state of the chloroplast membranes and the presence of the chlorophyll--protein complex of photosystem II.