GDH1 — Solanum tuberosum

Summary

StGDH1 (GDH1) on potato chromosome 10 encodes a glutamate dehydrogenase with NAD(P)+ activity (EC 1.4.1.3), capable of binding NAD+, NADP+, and metal ions including zinc and copper. The gene is associated with glutamate breakdown and metabolism, nitrogen compound transport and utilization, the TCA cycle, sucrose metabolism, and responses to nitrogen starvation, cold, basic pH, and absence of light. Its product localizes to mitochondria, plastids, the cytosol, and the vacuole. StGDH1 is associated with traits including nitrogen content, protein content, chlorophyll content, photosynthetic rate, respiration rate, stomatal resistance, and plant dry weight, as well as phenotypes such as nitrogen assimilation, chlorophyll degradation, leaf senescence, anoxia tolerance, and carbon starvation tolerance. Related genes in other species are linked to aluminum resistance and impaired root growth under nitrogen stress.