Original scientific paper

Development of Calceolaria Chromoplasts in the Presence of Herbicides affecting Carotenoid Biosynthesis

Mercedes Wrischer ; Hrvatska
Nikola Ljubešić ; Hrvatska
Zora Modrušan ; Hrvatska

Abstract

Three herbicides (SAN 9789, SAN 9785 and amitrole) were used to study the biosynthesis of carotenoids and the connected structural changes in chromoplasts of Calceolaria flowers. All three herbicides affected the biosynthesis of total carotenoids, especially of lutein. The strongest inhibition was obtained by SAN 9789, which considerably inhibited the production of lutein and the normal formation of »chromoplast internal membranes« (CIMs). Amitrole moderately influenced both the development of lutein and CIMs. SAN 9785 did not cause any conspicuous fine structural modifications in the chromoplasts, although it reduced the content of pigments significantly. The results are discussed with regard to the known action of these herbicides on the biosynthesis of carotenoids.

Keywords

Hrčak ID:

159704

URI

https://hrcak.srce.hr/159704

Publication date:

31.12.1991.

Article data in other languages: croatian

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