Plant sweet and yeast MSF transporter capable of transporting different sugars simultaneously

A recombinant yeast comprising one or more heterologous polynucleotides encoding an Arabidopsis thaliana SWEET7 (AtSWEET7) transporter polypeptide comprising 90% or more sequence identity to SEQ ID NO:

• 3, wherein an Asn amino acid at position 145 (Asn145) of the AtSWEET7 transporter is substituted with a Ser amino acid (Asn145Ser substitution), an Ala amino acid at position 175 (Ala175) is substituted with a Phe amino acid (Ala175Phe substitution), or both the Asn145 and the Ala175 are respectively substituted with a Ser and a Phe (Asn145Ser substitution and an Ala175Phe substitution).