Nitrogen metabolism of Spirodela oligorrhiza : III. Amino acids and the utilization of nitrate.
Wheras ammonium inhibited almost completely utilization of nitrate (NO3) by Spirodela oligorrhiza, asparagine, aspartate, glutamine, and glutamate had only a sparing effect. Asparagine and glutamine were used more rapidly than NO3; aspartate and glutamate at about the same rate. These differences in utilization of NO3 were not determined by differences in the levels of nitrate reductase.
Fruit Research Division, DSIR, Auckland, New Zealand.
A R
AR
Ferguson