NR — Medicago truncatula

Summary

MTR_5G059820 (MtNR) on barrel medic chromosome 5 encodes a protein with nitrate reductase (NADPH) activity, and additional cytokinin riboside 5'-monophosphate phosphoribohydrolase, cytochrome-b5 reductase, sulfite oxidase, and SUMO transferase activities, binding FAD, molybdenum cofactor, and SUMO. The gene is associated with nitrate assimilation, nitric oxide metabolism and anabolism, cytokinin anabolism, sulfur metabolism, electron transfer, and responses to nitrogen and potassium starvation, L-glutamate, and stress priming. It is linked to post-embryonic root development, stomatal complex patterning, pollen-pistil interaction, and downregulation of systemic acquired resistance. Associations include traits such as nitrate sensitivity and transport, phosphorus response, leaf length, seed coat morphology, cytokinin content, shoot branching, and responses to aluminum, copper, UV-B, and osmotic stress. The protein localizes to the preprophase band, cell cortex, stress granule, apoplast, plasmodesma, and chloroplast stroma.