Original scientific paper

Ultrastructural Changes of Plastids during the Yellowing of the Fruit of Cucurbita pepo var. pyrijormis

Nikola Ljubešić ; Hrvatska

Abstract

The transformation of chloroplasts to chromoplasts in the green part of the fruit of Cucurbita pepo var. pyriformis was investigated at the ultrastructural level during the process of yellowing. Two main patterns of thylakoid disintegration have been found.
1. The thylakoidal-system disintegrated and numerous plastoglobules are formed.
2. Grana-thylakoids and stroma-thylakoids gradually disappear and are transformed at the same time into long bundles of thylakoids, tubular complexes and long single thylakoids. Later on these thylakoidal-struc- tures form closely packed bundles of thylakoids. Finally all these structures disintegrate with simultaneous appearance of a great number of plastoglobules.
In both cases the final result of the thylakoid-disintegration is exactly the same, namely chromoplasts of a globular type.

Keywords

Hrčak ID:

157128

URI

https://hrcak.srce.hr/157128

Publication date:

31.12.1972.

Article data in other languages: croatian

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