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The Roles of Isomers of Phytoene, Phytofluene and Zeta-carotene in Carotenoid Biosynthesis by a Mutant Strain of Scenedesmus Obliquus

Overview
Journal Arch Microbiol
Specialty Microbiology
Date 1977 Nov 18
PMID 596993
Citations 7
Authors
R Powls
G Britton
Affiliations
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Abstract

Considerable changes in pigment composition occur during a period of 10 h when dark-grown cultures of PG1, a zeta-carotenic strain of Scenedesmus obliquus, are illuminated. These changes are consistent with a biosynthetic pathway in which 15-cis-phytoene is converted via 15-cis-phytofluene and 15-cis-zeta-carotene into all-trans-zeta-carotene and trans-bicyclic carotenoids. The findings also support the view that the xanthophylls lutein and zeaxanthin are formed from the corresponding carotenes and are especially important in the development of a normal chloroplast structure.

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References
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