SUT — Solanum tuberosum

Summary

PGSC0003DMG400009213 (SUT1) on potato chromosome 11 encodes a protein belonging to the sucrose symporter plant family and the major facilitator superfamily. The protein is associated with phloem sucrose loading and unloading, maltose transport, and carbohydrate membrane transport. In potato, SUT4 has been linked to tuberization, flowering, and shade avoidance, while SUT2 is associated with yield and tuber starch content. The gene is also associated with grain yield, starch content, sugar content, photosynthetic rate, water use efficiency, and abiotic stress responses. It localizes 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, and plant growth, and to flowering time.