Figure 3.

Field Emission Scanning Electron Micrograph of Cell Interfaces in S. viridis Leaf.

(A) M-BS cell interface. The torn patches (arrowheads) are mesophyll cell remnants on the surface of underlying cylindrical bundle sheath cells.

(B) M-M cell interface. The torn patches (arrowheads) are mesophyll cell remnants on the sides of highly lobed mesophyll cells.

In each case, the torn patches (arrowheads) on the cell surfaces are remnants of attachment sites with neighboring mesophyll cells. Most patches are covered in mesophyll cell debris, and only sites lacking cell debris (asterisk) were used for plasmodesmata quantification. Inset is the boxed area with underlying bundle sheath (A) or mesophyll (B) cell area in green and attachment sites in blue. Bars = 10 µm.