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. 1974 Mar;71(3):807-10.
doi: 10.1073/pnas.71.3.807.

Carotenoid transformations in the chloroplast envelope

S W Jeffrey  1 , R Douce, A A Benson
Affiliations

Carotenoid transformations in the chloroplast envelope

S W Jeffrey et al. Proc Natl Acad Sci U S A. 1974 Mar.

Abstract

The envelope of the spinach chloroplast is a yellow membrane system with a unique carotenoid composition. Envelopes prepared from dark-treated leaves had a violaxanthin content up to 3.5 times the lutein plus zeaxanthin content, whereas in chloroplast envelopes from illuminated leaves this ratio was only 0.75. Light-catalyzed changes in violaxanthin content also occurred in the thylakoid fraction.The role of this reversible light-catalyzed de-epoxidation of violaxanthin in the function of the envelope of the chloroplast is discussed.

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