Karen L. Cornwell

TL;DR: The data on the effects of added ammonia on total labeling, pool sizes, and specific radioactivities of several amino acids provides a number of indications about the intrACEllular sites of principal synthesis from carbon skeletons of these amino acids and the selective nature of effects of increased intracellular ammonia concentration on such synthesis.

TL;DR: The net effect of addition of ammonia to mesophyll cells is a redistribution of newly fixed carbon away from carbohydrates and into amino acids, which appears to come mainly at the expense of sucrose synthesis.

TL;DR: The metabolic effects of added NH(4) (+) during NPR fixation were greater than those during PR fixation, suggesting that higher photosynthetic rates under NPR conditions can accommodate the increased drain of carbon toward amino acid synthesis while maintaining sucrose synthesis.

TL;DR: Addition of millimolar sodium glyoxylate to spinach (Spinacia oleracea) chloroplasts was inhibitory to photosynthetic incorporation of (14)CO(2) under conditions of both low and high CO( 2) concentrations, and increased labeling was observed in 6-P-gluconate, a key indicator of decreased reducing potential.

TL;DR: The effects of added glycine hydroxamate on the photosynthetic incorporation of (14)CO(2) into metabolites by isolated mesophyll cells of spinach was investigated and suggested that when the rate of glycolate synthesis is slow, the primary route of glycine synthesis is through serine rather than from glycolates.