GDH1 — Zea mays

Summary

ZM00001EB060520 (ZmGDH1, also known as GDH1, GDH2, or GDH3) on maize chromosome 1 encodes a glutamate dehydrogenase with NAD(P)+ activity (EC 1.4.1.3). The gene is associated with glutamate and proline breakdown, the GABA shunt, nitrogen fixation and utilization, C4 photosynthesis, aerenchyma formation, and tissue homeostasis. It has been linked to numerous agronomic traits including grain yield, grain number, grain weight, plant height, root volume and length, lateral root number, leaf nitrogen and chlorophyll content, photosynthetic rate, starch and sucrose content, and tolerance to salinity, cold, and anoxia. The gene product localizes to mitochondria, plastids, the cytosol, and the plant-type vacuole. Studies of related genes in other species connect the GDH family to nitrogen metabolism, drought and salt stress responses, and root development.