GPPS — Cucumis melo

Summary

MELO3C016140.2 (CmGPPS) on melon chromosome 8 encodes a prenyltransferase with geranyltranstransferase, dimethylallyltransferase, farnesyltranstransferase, and all-trans-nonaprenyl-diphosphate synthase (geranyl-diphosphate specific) activities, belonging to the polyprenyl synthetase family. The gene is associated with the biosynthesis of geranyl diphosphate, farnesyl diphosphate, geranylgeranyl diphosphate, terpenoids, carotenoids, plastoquinone, ubiquinone, and ethylene, as well as monoterpene biosynthesis, isoprenoid metabolism, hexose and sucrose breakdown, starch metabolism, fruit development, and responses to herbivores and insects. It is linked to fruit sweetness, fruit weight and size, sugar content, stem length and diameter, plant height, heterosis, photosynthetic rate, chloroplast development, jasmonic acid content, low temperature stress response, and root morphology. The protein localizes to the plastid, chloroplast stroma, etioplast, mitochondria, and cytosol. Related genes in other species are linked to plastoquinone biosynthesis, singlet oxygen quenching, and photosynthetic performance.