AKR — Medicago truncatula

Summary

MTR_5G097910, designated AKR, encodes an aldo-keto reductase family protein with D-galacturonate reductase, 6'-deoxychalcone synthase, codeinone reductase (NADPH), 3''-deamino-3''-oxonicotianamine reductase, and aldose reductase (NADPH) activities, as well as general oxidoreductase activity acting on CH-OH donors. This barrel medic gene on chromosome 5 is associated with secondary metabolite biosynthesis, including flavonoid and alkaloid anabolism and metabolism, as well as ascorbate biosynthesis and siderophore anabolism. It is linked to responses to salt, iron ion starvation, and zinc starvation, and to leaf senescence and hypersensitivity. The encoded protein localises to the cytosol. Studies of related genes in other species link the AKR family to seed protein content, sulfur content, linoleic acid content, seed maturation, stomatal opening, and photochemical quenching.