Mitochondria: Key Organelles Accelerating Cell Wall Material Accumulation in Juice Sacs of Pummelo (Citrus grandis L. Osbeck) Fruits during Postharvest Storage

Figure 2

Transmission electron micrographs of cross sections of dorsal juice sac (a, b) and septal juice sac (c, d) of pummelo fruit stored for 0 days (the start of storage) at room temperature. (a) Overview of the cell structure of a dorsal juice sac. (b) Higher magnification micrograph of the region marked by a rectangle in (a). (c) Overview of the cell structure of a septal juice sac. (d) Higher magnification micrograph of the region marked by a rectangle in (c). Cw: cell wall, Is: intercellular space, V: vesicle, arrow: space between the plasma membrane and the cell wall, open arrow: plasma membrane, and white arrowhead: microfibril.

(a)

(b)

(c)

(d)