Plant Physiol. Illumina
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Plant Physiology 64:663-664 (1979)
© 1979 American Society of Plant Biologists

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Articles

Posttranscriptional Control of Nitrate Reductase of Cultured Tobacco Cells by Amino Acids

Yair M. Heimer and Emanuel Riklis

1 Nuclear Research Center-Negev, P. O. Box 9001, Beer-Sheva, Israel

Using the inhibitor of RNA synthesis, 4,5',8-trimethylpsoralen plus near ultraviolet light, the half-life of the rate-limiting RNA species required for the induction of nitrate reductase in XD cells of tobacco was estimated to be 4 hours. Amino acids, the end product of nitrate assimilation, reduced the half-life to 1 hour. It is suggested that amino acids exert a posttranscriptional control on the enzyme level.






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ASPB Publications PLANT PHYSIOLOGY® THE PLANT CELL
Copyright © 1979 by the American Society of Plant Biologists