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The Regulation of Nitrate Reductase, Nitrite Reductase, and Glutamate Dehydrogenase in Excised Pea Roots by Some Exogenous Amino Acids

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Biologia Plantarum

Abstract

The effect of growth retarding amino acids (L-aspartic acid,L-leucine,L-methionine, andL-threonine) on nitrate reductase (NO3R), nitrite reductase (NO2R), and NADH2 dependent glutamate dehydrogenase (GDH) in excised pea roots was followed,L-methionine andL-threonine slightly depressed NO3R activity,L-aspartic acid enhanced NO2R and GDH activities.L-methionine andL-threonine also slightly decreased nitrate uptake. The results obtained are discussed in connection with the growth effects of the amino acids investigated.

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Authors and Affiliations

  1. Department of Plant Physiology, Institute of Experimental Botany, Czechoslovak Academy of Sciences, Flemingovo nám, 2, Praha, Praha 6, Czechoslovakia

    J. Sahulka

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  1. J. Sahulka
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Sahulka, J. The Regulation of Nitrate Reductase, Nitrite Reductase, and Glutamate Dehydrogenase in Excised Pea Roots by Some Exogenous Amino Acids. Biol Plant 14, 308–311 (1972). https://doi.org/10.1007/BF02935859

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  • DOI: https://doi.org/10.1007/BF02935859

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