NIR — Glycine max

Summary

GLYMA_02G132100V4, designated GmNIR, encodes a ferredoxin-nitrite reductase (NIR) with NO-forming nitrite reductase, sulfite reductase (ferredoxin) and redox activities, binding 4Fe-4S clusters, heme and DNA. This soybean gene on chromosome 2 is associated with nitrogen content, nitrate transport and uptake, protein content, seed weight and viability, leaf size, root length, drought tolerance and salt tolerance. It is linked to nitrate response, nitrate-responsive gene regulation and plant growth. The product localises to the chloroplast stroma, chloroplast nucleoid, apoplast and mitochondria, and is associated with nitrate import, sulfate assimilation, sulfur metabolism, siroheme anabolism, response to flooding and nutrient response. Studies of related genes in other species link the family to nitrite reduction, acid rain resistance, and leaf protein content.