Sugar transporter. Expressed in both shoots and roots. In roots, expressed in epidermal cells and especially strongly in cortex cells. In flowers, expressed in sepals. By dehydration and cold treatment (PubMed:9545564). By drought and high salinity conditions, with maximal expression after 1 and 2 hours of exposure to these conditions. Expression in leaves decreases after exposure to the high salinity and abscisic acid (ABA) treatment, but expression in roots remain at a constant level (PubMed:19901034). Belongs to the major facilitator superfamily. Sugar transporter (TC 2.A.1.1) family.