Fig. 3.

Cell wall invertase activity is greatly reduced in cwinv4 flowers. Cell wall extracts were prepared from whole Stage 14–15 flowers (25 mg fresh weight) of wild-type and cwinv4 plants, which were subsequently tested for invertase activity. The results from one experiment with cwinv4-1 and cwinv4-2 plants are shown (n=3 independent preparations). Independent and repeated experiments with both cwinv4-1 and cwinv4-2 plants displayed consistent results, with varying amplitudes of total activity for both wild-type and mutant plants.