Abstract

Plastid metamorphosis during fruit ripening was studied in a tomato mutant containing a high proportion of delta-carotene. As the fruits change color from green to orange, a complete breakdown of chloroplast lamellae occurs with a concomitant increase in osmiophilic globules. Membranes are proliferated from the inner membrane of the chloroplast envelope and assume numerous configurations. The carotene pigments develop in association with these membranes, forming crystalloids of various morphologies.

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