SPS — Solanum tuberosum

Summary

PGSC0003DMG400029892 (StSPS) on potato chromosome 8 encodes a protein with domains SPS_C, SPP-like_dom, Glyco_trans_1, and HAD_sf, and is annotated with sucrose-phosphate synthase activity, sucrose-phosphate phosphatase activity, sucrose synthase activity, protein kinase binding, calcium ion binding, and other molecular functions. The gene is associated with sucrose and starch metabolism, including both anabolism and breakdown, as well as nectar secretion, pollen wall assembly, circadian rhythm, regulation of abscisic acid-mediated signalling, and regulation of stomatal movement. It has been linked to numerous agronomic traits, including starch yield and content, sugar content, photosynthetic rate, vegetative vigor, plant height, flowering time, seed yield, and responses to cold, heat, and oxidative stress. Related genes in other species link the family to osmotic stress response, sucrose synthesis, and heat tolerance.