Ammonia regulation of carbon metabolism in photosynthesizing leaf discs.


Alfalfa (Medicago sativa L., var. El Unico) leaf discs, floating on buffer containing NH(4)Cl and photosynthesizing with (14)CO(2), produced more labeled amino acid and less sucrose than did control discs (no added NH(4)Cl). The level of pyruvate increased and that of phosphoenolpyruvate decreased. These and other changes in levels of labeled compounds led… (More)

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