✦ LIBER ✦
The roles of isomers of phytoene, phytofluene and ζ-carotene in carotenoid biosynthesis by a mutant strain ofScenedesmus obliquus
✍ Scribed by Roy Powls; George Britton
- Book ID
- 104760598
- Publisher
- Springer
- Year
- 1977
- Tongue
- English
- Weight
- 464 KB
- Volume
- 115
- Category
- Article
- ISSN
- 0302-8933
No coin nor oath required. For personal study only.
✦ Synopsis
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.