Original scientific paper

The Regreening of Tubulous Chromoplasts in Fruits of Cucurbita maxima Duch. cv. turbaniformis

Nikola Ljubešić ; Hrvatska

Abstract

In subepidermal cell layers of the red proximal part of fruits of Cucurbita maxima cv. turbaniformis the reversion of chromoplasts into chloroplasts has been investigated. Before the process of regreening the subepidermal cells contain only chromoplasts of the tubulous type. The chromoplasts are filled with a large peripheral reticulum, plastoglobules and numerous tubules.
During the process of regreening, the tubules and part of plastoglobules disappear, while new thylakoids are formed simultaneously. The thylakoids increase in number and form grana structures. The results of
the process of regreening are chloroplasts with normal grama structures and numerous, big plastoglobules. The investigations suggest that the material contained in the new thylakoids originates partially from tubules and plastoglobules, but is partially synthesized during the process of regreening. The observations are discussed with special reference to the origin of the newly formed thylakoids and grana.

Keywords

Hrčak ID:

158426

URI

https://hrcak.srce.hr/158426

Publication date:

31.12.1981.

Article data in other languages: croatian

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