Fig. 3

Light microscopy analysis of tomato fruits from wild type (a, c) and transgenic (b, d) plants. In the pericarp of mature green fruits of both wild type (a) and transgenic (b) plants it is possible to recognize an internal region consisting of large cells with small intercellular spaces, and an outer region formed by small cells with thickened walls situated underneath an epidermis with a thick layer of cuticle. In the red ripe fruits of both wild type (c) and transgenic (d) plants the above similar structure is maintained but for a marked lengthening of the cells in the outer pericarp region (scale bar = 100 μm)