Glycine and L-Alanine as Antagonists of Growth Inhibition by the Branched-Chain Amino Acids inSpirodela polyrhiza

Publisher Website
Google Scholar
Abstract
Growth inhibition of the duckweed Spirodela polyrhiza (L.) Schleiden by exogenously supplied L-leucine, L-valine, or L-isoleucine was antagonized by simultaneously supplied glycine or L-alanine. Calculations, using the kinetic parameters for the uptake of these amino acids, indicated that the antagonisms to a considerable degree resulted from competitive inhibition of the uptake of the growth-inhibiting amino acids. However, the antagonisms resulted partly from an interaction between growth inhibitor and antagonist inside the cells.