SUS5 — Cucumis sativus

Summary

CsSUS5 (CSA_5G322500) on cucumber chromosome 5 encodes a sucrose synthase enzyme (EC 2.4.1.13) with sucrose synthase activity, belonging to the SUS_EPBD, SUS_N, and Glyco_trans_1 domain families. This gene is associated with sucrose metabolism, callose deposition in phloem sieve plates, phloem unloading, nectar secretion, response to anoxia, pollen and seed maturation, seed development, nodulation, and protein tetramerization. It is linked to plant-type cell wall, membrane, and cytoplasmic localisation, and to pathways including sucrose biosynthesis, galactose degradation, and carbohydrate metabolism. CsSUS5 has been connected to sugar content, callose deposition and content, starch biosynthesis, and cellulose biosynthesis. Studies of related genes in other species link the sucrose synthase family to glucose content, starch grain synthesis, cellulose content, and seed weight.