AbstractThe rate of C14O2incorporation into amino acids and organic acids inC. reinhardtiiis a function of particular stages of development in the life cycle of the alga. Gametic differentiation in nitrogen free medium is accompanied by a reduced rate of amino acid synthesis and a higher synthesis of organic acids than that found for the cells undergoing vegetative development. The addition of ammonium to differentiating gametes results in an increased synthesis of amino acids, particularly the basic ones, and a concomitant reduction in organic acid synthesis.
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