A Theoretical Model of Jigsaw-Puzzle Pattern Formation by Plant Leaf Epidermal Cells
Fig 2
(a) Governing equation of the model. (b) Initial distribution of cell wall taken from measurements of seedlings. Black indicates the cell wall; white indicates the cell interiors. Red asterisk indicates a small stomatal lineage cell. (c) Cell wall interdigitation at t = 100. Red asterisk indicates a small stomatal lineage cell. (d) Signaling molecule concentration at the interface. The protruded side had a higher ROP2/ROP6 ratio. Cyan indicates ROP2 activity; magenta indicates ROP6 activity. (e) Dispersion relation of the model obtained by a linear stability analysis. The specific wavenumber component grew. (f) The ratio of wavenumber components obtained by analysis of in vivo cell wall pattern changes. The upper leaf regions of 2-, 4-, and 7-day-old seedlings were analyzed. The red line indicates the ratio between 4- and 2-day-old seedlings in each wavenumber. The green line indicates the ratio between 7- and 2-day-old seedlings in each wavenumber.