SPS — Cucumis melo

Summary

MELO3C010300.2 (CmSPS) on melon chromosome 3 encodes a protein with sucrose-phosphate synthase, sucrose-phosphate phosphatase, sucrose synthase, protein kinase binding, phosphatase, protein serine/threonine phosphatase, transglycosidase, kinase binding, calcium ion binding, and protein binding activities. The gene is associated with fruit development, nectar secretion, pollen wall assembly, regulation of abscisic acid-mediated signaling, membrane breakdown, hexose breakdown, sucrose anabolism, sucrose breakdown, autotrophy, protein dephosphorylation, starch metabolism, chlorophyll anabolism, syngamy, sucrose metabolism, ethylene anabolism, downregulation of abscisic acid-mediated signaling, and chlorophyll fluorescence. It has been linked to a wide range of agronomic traits including fruit weight and size, sugar and sucrose content, seed yield, plant height, vegetative vigor, net photosynthetic rate, respiration rate, and responses to low temperature and oxidative stress. Associations with stomatal regulation, root development, shoot branching, and drought tolerance have also been noted. Studies of related genes in other species connect the family to abscisic acid signaling, stomatal response, and stress tolerance.