Fig. 8

Fruit cells size of transgenic and wild type mature tomatoes. a Fruit cells number per mm². b Fruit cell size. The epidermis were cut into 4 × 4 mm pieces, which were frozen in ultralow temperature (−196 °C), coated by gold, and observed under ultralow temperature condition with 300× magnification by cryo-electron microscopy. The cell number per mm² was counted to ensure that at least 500 cells for each individual fruit and 5000 cells for each transgenic line were counted. Bar, 100 μm. The experiment was repeated three times