11. See xanthophyll cycle for this topic. 12. Zeaxanthin is one of the two primary xanthophyll carotenoids contained within the retina of the eye. 13. Xanthophylls and carotenoids are the yellow and orange pigments abundant in hickories, tulip poplars and ginkgo.14. The bright yellow form is exclusively aerial and is thought to be associated with excess xanthophyll production. 15. Xanthophylls are the most common yellow pigments that form one of two major divisions of the carotenoid group.16. Chromoplasts synthesize and store pigments such as orange carotene, yellow xanthophylls , and various other red pigments. 17. In white cultivars, carotenoids are formed, while in red cultivars, anthocyanins and xanthophylls are formed. 18. It is a xanthophyll cycle pigment, an oil-soluble alcohol within the xanthophyll subgroup of carotenoids. 19. It is a xanthophyll cycle pigment, an oil-soluble alcohol within the xanthophyll subgroup of carotenoids. 20. Lessening or heightening photoprotection through the xanthophyll cycle allows plants to regulate their own light uptake for photosynthesis.
