Abstract
AbstractAt least 69 sugar transporter homologs have been found from Arabidopsis. They fall into eight large families: hexose transporter (STP/HXT), sucrose transporter (SUC/SUT), polyol transporter (PLT), myo-inositol transporter (ITR/MIT), plastidic glucose transporter (pGlcT), putative monosaccharide sensing protein (AZT/MSSP), sugar-porter family protein (SFP) and vacuolar glucose transporter (VGT). This chapter reviews the characters, regulations and functions of sugar and polyol transporters in plants. Many more sucrose and hexose transporters have been studied and reviewed than polyol transporters. Most sugar and polyol transporters have been shown or suggested to be in the plasma membrane. Therefore, here, we focus more on polyol transporters and vacuolar sugar transporters.
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