3.1.3.24 physiological function sucrose phosphate synthase and sucrose phosphate phosphatase interact in live cells. A fusion construct between the two genes promotes plant growth in both transgenic Arabidopsis and hybrid poplar 751222 3.1.3.24 physiological function sucrose-phosphate synthase, SPS, synthesizes sucrose-6F-phosphate from UDP-Glc and/or ADP-Glc and fructose-6-P, and it is metabolically associated to sucrose-phosphate phosphatase, SPP, a specific phosphatase, yielding the net synthesis of sucrose 715028