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Science 3 October 1969:
Vol. 166. no. 3901, pp. 109 - 110
DOI: 10.1126/science.166.3901.109
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Articles

Light and Hormones: Interchangeability in the Induction of Nitrate Reductase

S. Herman Lips 1 and N. Roth-Bejerano 1

1 Negev Institute of Arid Zone Research, Department of Plant Physiology, Beer-Sheva, Israel

Suitable concentrations of kinetin and gibberellic acid permit induction of nitrate reductase in leaves of tobacco in the dark. Hormone sprays eliminate the need for light induction of the enzyme. The concentration of gibberellic acid required for optimal induction varies according to the concentration of kinetin supplied.

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Science. ISSN 0036-8075 (print), 1095-9203 (online)