Possible role in the continued mobilization of sucrose to sink organs. Hydrolysis of terminal non-reducing beta-D-fructofuranoside residues in beta-D-fructofuranosides. Inhibited by C/VIF1 and C/VIF2. Glycan biosynthesis; sucrose metabolism. May be present in two forms, a 70 kDa monomer and a heterodimer of the 30 kDa and 38 kDa subunits. The ratio of the levels of the two forms within cells appears to be regulated developmentally (By similarity). May be released into the lumen of the vacuole from the tonoplast through a proteolytic processing. Mostly expressed in stems, roots and flowers, and, to a lower extent, in mature leaves. Expressed during germination et seedling growth. Induced by gibberellin (e.g. gibberellic acid GA) that accumulates in seeds after red light treatment (PubMed:15056893). Accumulates rapidly but transiently upon infection with virulent but not with avirulent P.syringae (PubMed:16807755). In whole plants, expression increases after 2 hours of exposure to drought and abscisic acid (ABA), and after 5 hours of exposure to high salinity treatment. At the 5 hour time point, expression under drought and ABA treatment is also higher than that under the high salinity condition (PubMed:19901034). Belongs to the glycosyl hydrolase 32 family.