SPS — Solanum lycopersicum

Summary

SOLYC07G007790.3 (SPS) on tomato chromosome 7 encodes a protein with sucrose-phosphate synthase, sucrose-phosphate phosphatase and sucrose synthase activities, and contains SPS_C, SPS_pln, SPP-like, Sucrose_synth, Glyco_trans_1, and HAD_sf domains. The gene is associated with sucrose biosynthesis, glucose homeostasis, phloem unloading, and hexose and fructose metabolism. It has been linked to fruit sweetness, fruit color, fruit dry weight, seed weight, seed length, seed shape, starch concentration, carbohydrate content, sucrose content, glucose content, leaf chlorophyll content, specific leaf area, vegetative vigor, plant dry weight, root volume, root dry weight, stem diameter, shoot branching, and days to heading. Associations also include heat tolerance, cold tolerance, drought tolerance, photosynthesis, carbon partitioning, chloroplast structure and function, and responses to powdery mildew. Studies of related genes in other species link the family to osmotic stress response and sucrose synthesis.