The mineral nutrient needed in greatest abundance by plants is nitrogen. Plants, however,
must compete for nitrogen in the soil with abiotic and biotic processes such as erosion …

▪ Abstract Nitrate reductase (NR; EC 1.6. 6.1-3) catalyzes NAD (P) H reduction of nitrate to
nitrite. NR serves plants, algae, and fungi as a central point for integration of metabolism by …

The intracellular level of a protein is dependent on both its rate of synthesis and its rate of
degradation. Thus, differential regulation of protein stability represents a potential …

Spinach leaf NADH: nitrate reductase (NR) responds to light/dark signals and photosynthetic
activity in part as a result of rapid regulation by reversible protein phosphorylation. We have …

The ability to use nitrate as sole nitrogen source to sustain growth is a property shared by
some bacteria and fungi and by most algae and plants. The biochemical pathway …

In many plants, nitrogen represents 2 to 6% of dry matter, most of it being present in the form
of amino acids, proteins, or nucleic acids. In these organic compounds, nitrogen exists in its …

NR (EC 1.6. 6.1-3) was first isolated and characterized more than 40 years ago, and each
decade of study of this key enzyme of nitrate assimilation has been associated with a new …

Nitrate reductase (NR) is rapidly inactivated by phosphorylation of serine residues in
response to loss of light or reduction in CO2 levels. To identify sites within NR protein that …

The influence of salinity on the activity of nitrate reductase (NR, EC 1.6. 6.1) and the level of
the molybdenum cofactor (MoCo) as affected by the source and concentration of nitrogen …

Two mutations have been found in a gene (NRT2) of Arabidopsis thaliana that specifically
impair constitutive, high-affinity nitrate uptake. These mutants were selected for resistance to …