NIR — Solanum lycopersicum

Summary

SOLYC01G108630.3, the tomato NIR (NiR1) gene on chromosome 1, encodes a ferredoxin-nitrite reductase with NO-forming nitrite reductase activity, sulfite reductase (ferredoxin) activity, and binding capabilities for 4Fe-4S clusters and heme. The gene is associated with nitrate metabolism, nitrogen utilization, pigment accumulation, the xanthophyll cycle, and response to boron. It is linked to leaf nitrogen content, nitrate content and uptake, plant dry weight, soluble protein and amino acid content, net photosynthetic rate, quantum yield, photochemical quenching, stomatal resistance, plant height, root number and length, drought tolerance, and disease tolerance. The gene is also associated with chloroplast nucleoid and stroma localization, chaperone-mediated autophagy, and plastid DNA packaging. Related genes in other species are linked to nitrite reduction and acid rain resistance.