15N and inhibitor studies on the photorespiratory nitrogen cycle in maize leaves
- 1 January 1983
- journal article
- research article
- Published by Springer Nature in Photosynthesis Research
- Vol. 4 (1) , 3-7
- https://doi.org/10.1007/bf00041796
Abstract
A combination of inhibitor and 15N studies were used to investigate the photorespiratory nitrogen cycle in maize, a C4 plant. Inhibitors used included isonicotinyl hydrazide which blocks the conversion of glycine to serine, methionine sulfoximine an inhibitor of GS and azaserine an inhibitor of GOGAT. Results from levels of ammonia and amino acids and the distribution of 15N into NH3, serine, glutamine and glutamate indicated that the photorespiratory N-cycle occurs in this C4 plant, but the rate of flux through this pathway is low as compared with that in C3 plants.Keywords
This publication has 6 references indexed in Scilit:
- Effects of Methionine Sulfoximine and Glycine on Nitrogen Metabolism of Maize Leaves in the LightFunctional Plant Biology, 1983
- Distribution of the Enzymes of Nitrogen Assimilation within the Pea Leaf CellPlant Physiology, 1979
- Photorespiratory nitrogen cycleNature, 1978
- The pathway of nitrogen assimilation in plantsPhytochemistry, 1976
- Purification and characterization of serine-glyoxylate aminotransferase from kidney bean (Phaseolus vulgaris)Biochimica et Biophysica Acta (BBA) - Enzymology, 1973
- The Effect ofIsonicotinyl Hydrazide on the Photosynthetic Incorporation of Radioactive Carbon Dioxide into Ethanol-Soluble Compounds ofChlorellaJournal of Experimental Botany, 1963