Mediates an active uptake of hexoses, probably by sugar/hydrogen symport. Can transport glucose, methylglucose, galactose, xylose and mannose, but not fructose. Mostly in flowers and roots, especially in anthers, including pollen, and root tips. Also present in some hydathodes. Induced locally by wounding, elicitors such as chitin, bacterial pathogens such as P.syringae, compatible fungal pathogens such as A.brassicicola, E.cichoracearum and F.oxysporum, and incompatible fungal pathogens such as B.graminis. Also induced by aphid feeding. Belongs to the major facilitator superfamily. Sugar transporter (TC 2.A.1.1) family.