SUS2 — Beta vulgaris subsp. vulgaris

Summary

BvSUS2 (BVRB_7G163460) on sugar beet chromosome 7 encodes a sucrose synthase, possessing sucrose synthase activity and transglycosidase activity, and belongs to the sucrose synthase protein family. The gene is associated with sucrose metabolism, sucrose transport, phloem unloading, and secondary growth, as well as responses to carbon dioxide, anoxia, salt, and mannitol. It is linked to leaf development, protein tetramerization, cellular homeostasis, and nodulation. Associations with agronomic traits include sucrose content, photosynthetic rate, respiration rate, relative growth rate, and salt tolerance. The gene is also connected to cellulose biosynthesis, starch synthesis, guard cell starch accumulation, tuber development, seed development timing, and vascular development. Studies of related genes in other species link the family to dehydration stress response, seed development, and starch biosynthesis, as well as cold-induced sweetening.