SUS3 — Phaseolus vulgaris

Summary

PHAVU_001G209600 (PvSUS3) on chromosome 1 of French bean encodes a sucrose synthase, an enzyme with sucrose synthase and transglycosidase activities that belongs to the sucrose synthase domain family. The gene is associated with sucrose and starch metabolism, seed maturation and development, nodulation, protein tetramerization, and responses to anoxia, mannitol, and thirst. It has been linked to drought tolerance, and to phenotypes including reduced root sucrose synthase activity, starch synthesis, seed development timing, guard cell starch accumulation, cellulose biosynthesis, lipid content, metabolic homeostasis, and sucrose content. Studies of related genes in other species connect the family to dehydration stress response, starch biosynthesis, dehydration tolerance, and seed storage product biosynthesis, as well as to traits such as glucose, cellulose, sugar, and starch content, seed weight and size, leaf size, and photochemical quenching.