DXR — Solanum lycopersicum

Summary

SlDXR (SOLYC03G114340.3) on tomato chromosome 3 encodes a DXP reductoisomerase, an enzyme with DOXP reductoisomerase activity that also binds NADPH and manganese. The gene is associated with the methylerythritol phosphate (MEP) pathway and is linked to terpenoid, carotenoid, lycopene, monoterpene, sterol, and pigment metabolism, as well as responses to UV-C. It has been connected to fruit color, carotene and lycopene content, anthocyanin content, fruit weight, leaf size, plant height, and petal and flower color. The encoded protein localises to the chloroplast stroma. Studies of related genes in other species link the DXR family to chloroplast development, chlorophyll and carotenoid accumulation, trichome initiation and morphology, stomatal closure, and isoprenoid biosynthesis.