SUT — Beta vulgaris subsp. vulgaris

Summary

BvSUT (BVRB_5G124860) on sugar beet chromosome Bvchr5_un.sca010 is an uncharacterized protein with domains of the sucrose symporter and major facilitator superfamilies, and annotated molecular functions including sucrose:proton symporter activity, maltose:proton symporter activity, and arbutin, salicin, and biotin transmembrane transporter activities. The gene is associated with phloem sucrose loading, maltose transport, and carbohydrate membrane transport, as well as traits including sucrose content, grain yield, unfilled grain number, photosynthetic rate, respiration rate, root thickness, days to flowering, seed dormancy, and responses to abiotic stress, oxidative stress, and drought. It is linked to phenotypes such as sucrose-dependent growth, phloem unloading, assimilate translocation, grain filling, and tuber production. Localisation evidence connects the product to the tonoplast, chloroplast outer membrane, and cis-Golgi network. Studies of related genes in other species link the family to phloem transport, carbon partitioning, tuberization, flowering time, and grain size.