SPS — Solanum tuberosum

Summary

PGSC0003DMG400027936 (SPS) on potato chromosome 7 encodes a protein with sucrose-phosphate phosphatase activity, sucrose-phosphate synthase activity, sucrose synthase activity, protein kinase binding, phosphatase activity, protein serine/threonine phosphatase activity, and other molecular functions, and contains SPS_C, SPS_pln, SPP-like_dom, sucrose_synth, Glyco_trans_1, and HAD_sf domains. The gene is associated with carbohydrate utilization, phloem unloading, cell wall polysaccharide anabolism, response to biotic stimulus, and nectar secretion, and localizes to the endoplasmic reticulum, plasmodesmata, cytosol, and nucleus. It has been linked to starch concentration, sucrose content, fructose content, glucose content, reducing sugar content, tuber morphology trait, starch yield, grain size, seed yield trait, vegetative vigor, shoot fresh weight, net photosynthetic rate, water use efficiency, anthocyanin content, brassinosteroid sensitivity, and wheat powdery mildew disease response. Related genes in other species connect the family to sucrose synthesis and osmotic stress response, and to heat tolerance.