Original scientific paper

The Effect of Isopropyl N-Phenylcarbamate on the Structure and Photosynthetic Activity of Etiochloroplasts

Mercedes Wrischer ; Hrvatska
Karmen Botka ; Hrvatska

Abstract

The effect of isopropyl N-phenylcarbamate (IPC) on the development of the structure and function of etiochloroplasts in greening bean leaves has been studied by pigment analysis, measurements of photosynthetic activity and ultrastructural analysis.
The investigations have shown that IPC strongly inhibits the development of the thylakoid system, the synthesis of the chlorophyll and the photosynthetic activity of the etiochloroplasts; cytochemical analyses indicate that the development of both photosystem I and photosystem II are partly inhibited by IPC. The experiments have shown further that the production of all new membrane structures in the etiochloroplasts is strongly affected by IPC, so that these organelles constantly remain in the early etiochloroplast stage of development.
When green leaves are treated with IPC, there are no large ultra- structural changes in the chloroplasts, although the photosynthetic activity is lowered to less than a half of that of the control leaves.

Keywords

Hrčak ID:

158229

URI

https://hrcak.srce.hr/158229

Publication date:

31.12.1978.

Article data in other languages: croatian

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