Fig. 5.

3-D reconstructions of mature shoot apical meristems. (A–C) Reconstructions of mature shoot apical meristems from sections of the three shoot apices from 10-year-old plants shown in Fig. 4. Histological zonation is indicated as follows: the central zone in yellow, the peripheral and the rib meristem-like zones in green, and the leaf primordia P1 and P2 in blue and red, respectively. The top right views correspond to the 3-D reconstructions without the leaf primordium P2. Scale bars = 100 µm.