Abstract

Abstract Processes of formation of new mitochondria in plant cells. — While studying with the electron microscope the quiescent centre in the onion (Allium cepa) root tips, the writer was able to observe the endoplasmic reticulum arranged into peculiar concentric ring systems, which are here described. In some of the ring structures, between a ring and the contigous one, mitochondria-like bodies are formed, which are then detached by a kind of budding process. A short review of the current literature on formation of the mitochondria is also reported.

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