Figure 1.

Diagram illustrating the tissues and the stages of the life cycle of Arabidopsis plants in which small, oval and network-type mitochondria are observed. (A) shows a 3D reconstruction of a stem epidermal cell in which the small, round/oval-type of mitochondria are randomly distributed (green structures). (B) illustrates a SAM cell during prometaphase. The chondriome consists of a mixture of a few individual, oval or sausage-like mitochondria (green), and a massive, cage-like mitochondrion (light blue) that wraps around the dismantling nucleus (n, purple). (C) represents a typical Arabidopsis life cycle, where the spatial and temporal confinement of the tentaculate/cage-like mitochondrion is represented by coloring vegetative SAM regions in light blue. Bars in (A and B): 2 µm.