THE INFLUENCE OF LIGHT AND DARKNESS ON THE METABOLISM OF RADIOACTIVE GLUCOSE AND GLUTAMINE IN WHEAT LEAVES
- 1 March 1955
- journal article
- Published by Canadian Science Publishing in Canadian Journal of Botany
- Vol. 33 (2) , 189-196
- https://doi.org/10.1139/b55-014
Abstract
C14-Labelled glucose or glutamine was fed to wheat leaves in light or darkness, and several hours later the distribution of activity among the various plant constituents was determined following their separation by paper chromatography. From these data it was concluded that complete oxidation of glutamine to carbon dioxide proceeded at a greater rate in light than in darkness. In light glucose carbon was prevented from reaching pyruvic acid and the Krebs cycle to any great extent, but this block could be reversed by the application of ammonium nitrate to the leaves. Light or darkness had no effect on the respiration of glucose by Staphylococcus aureus.Keywords
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