FNR1 — Zea mays

Summary

ZM00001EB379240 (FNR1, also known as ZmFNR1) on maize chromosome 9 encodes a ferredoxin-NADP reductase, an oxidoreductase that acts on NAD(P)H and iron-sulfur proteins. The protein localises to the chloroplast thylakoid membrane and is associated with photosynthetic electron transport, CO2 assimilation, and cyclic electron transport. FNR1 has been linked to grain yield, grain weight, grain number, plant height, biological yield, and grain filling period, as well as to drought tolerance, bacterial blight disease resistance, and heterosis. It is also connected to nitrogen recycling, rubisco content, chlorophyll biosynthesis, chloroplast development, and flowering time. Related genes in other species link the family to carbon fixation, photosynthetic efficiency, and defence responses.