SUS1 — Solanum lycopersicum

Summary

SlSUS1 (SOLYC07G042550.3) encodes a sucrose synthase, a member of the sucrose synthase family with transglycosidase activity and also annotated for DNA binding and transcription factor activity. In tomato, the gene is associated with vascular tissue development, leaf morphology, cell wall organization, phloem unloading, hexose breakdown, and responses to hypoxia, drought, and osmotic stress. It is linked to fruit fresh weight, fruit sweetness, total soluble sugar content, fructose and glucose content, fruit dry weight, fruit volume, seed length and shape, starch yield, lycopene content, leaf chlorophyll content, drought sensitivity, and flower abortion. The gene product localizes to the cytosol, nucleus, vacuole, and plasmodesmata. Studies of related genes in other species connect the family to cellulose and starch biosynthesis, grain yield, submergence tolerance, and carbon allocation.