Changes in the Mitochondrial Complex accompanying Callus Growth

Large, vacuolated parenchyma cells from the dormant tuber ofthe Jerusalem Artichoke contain a variety of mitochondrial profiles.Cells of cultured explants contain an even wider range of mitochondrialforms including complex bell shapes, long cylindrical rods,branched structures, and plates. A theory is advanced to explainhow the complex bell-shaped mitochondria, and associated forms,may be derived from simple spheres and rods. Attention is alsodrawn to the significance of the spatial relationship that existsbetween bell-shaped mitochondria and developing vacuoles.