GDH1 — Triticum aestivum

Summary

TRAESCS5D02G442000, designated TaGDH1 on chromosome 5D of bread wheat, encodes a glutamate dehydrogenase with NAD(P)+ activity. This mitochondrial enzyme is associated with glutamate and shikimate breakdown, the GABA shunt, nitrogen utilization and response to nitrogen compounds, regulation of photosynthesis and its downregulation, gluconeogenesis, carbohydrate transport, sulfur metabolism, and responses to water, basic pH, and nitrogen starvation. The gene is linked to pre-harvest sprouting and to traits including grain protein content, grain yield, harvest index, flag leaf senescence, grain filling period, plant height, root volume and length, chlorophyll content, photosynthetic rate, quantum yield, water use efficiency, drought tolerance, oxidative stress response, and contents of total soluble sugar, soluble protein, amino acids, nitrogen, proline, and sugar.