H2O + L-glutamate + NAD(+) = 2-oxoglutarate + H(+) + NADH + NH4(+) H2O + L-glutamate + NADP(+) = 2-oxoglutarate + H(+) + NADPH + NH4(+) Expressed in roots (PubMed:16120687). Expressed ubiquitously in various tissues (PubMed:19430792). Detected in the region of the apical meristem and cortical cells in the tip region and elongation zone of the roots. Slightly induced by NH(4)Cl and NH(4)NO(3) (PubMed:16120687). Induced in shoots after nitrogen (N-deprivation) deprivation. In roots, first transiently repressed but later induced by N-deprivation (PubMed:19430792). Induced by alkali stress (PubMed:22655071). Up-regulated by salt stress in old leaves (PubMed:23082824). Activated by IDD10 in the presence of NH(4)+ ions (PubMed:23278238, PubMed:23470720). Induced by cold stress (i.e. 10 degrees Celsius) (PubMed:26230579). Belongs to the Glu/Leu/Phe/Val dehydrogenases family.