Figure 4

Diagram illustrating leaf margin development in Arabidopsis. Magnified view of inlet shows the underlying genetic mechanisms controlling this process. Illustrations are adapted from Nikovics et al. [61], Bilsborough et al. [141], and Engelhorn et al. [63]. P₁: plastochron 1; P₂: plastochron 2; I₁: incipient site showing auxin maxima (yellow circle).