Evidences have shown that 14-3-3 protein could interact with sucrose phosphate synthase (SPS) in
spinach (Spinacia oleracea), tobacco (Nicotiana tabacum) and potato (Solanum tuberosum), thereby
down-regulating its activity (Toroser et al. 1998; Bornke 2005; Zuk et al. 2005). Bioinformatics analysis showed that in tomato TFT1 and TFT10 (belonging to 14-3-3 protein) were most likely to regulate SPS activity (Yu and Cui 2010). Based on the above conclusion, we tried to obtain some further valuable experimental data including sugar contents, related sucrose-metabolizing enzymes activities and the relative expression levels of tft1, tft10 and sps to infer the possibility of the interaction between SPS and 14-3-3 protein. Our research also supplied some information of sugar metabolism for producing higher
yields and improved quality.