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Mar. Drugs 2011, 9(6), 1101-1118; doi:10.3390/md9061101
Review

Carotenoids in Algae: Distributions, Biosyntheses and Functions

Received: 2 May 2011; in revised form: 31 May 2011 / Accepted: 8 June 2011 / Published: 15 June 2011
(This article belongs to the Special Issue Marine Carotenoids)
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Abstract: For photosynthesis, phototrophic organisms necessarily synthesize not only chlorophylls but also carotenoids. Many kinds of carotenoids are found in algae and, recently, taxonomic studies of algae have been developed. In this review, the relationship between the distribution of carotenoids and the phylogeny of oxygenic phototrophs in sea and fresh water, including cyanobacteria, red algae, brown algae and green algae, is summarized. These phototrophs contain division- or class-specific carotenoids, such as fucoxanthin, peridinin and siphonaxanthin. The distribution of α-carotene and its derivatives, such as lutein, loroxanthin and siphonaxanthin, are limited to divisions of Rhodophyta (macrophytic type), Cryptophyta, Euglenophyta, Chlorarachniophyta and Chlorophyta. In addition, carotenogenesis pathways are discussed based on the chemical structures of carotenoids and known characteristics of carotenogenesis enzymes in other organisms; genes and enzymes for carotenogenesis in algae are not yet known. Most carotenoids bind to membrane-bound pigment-protein complexes, such as reaction center, light-harvesting and cytochrome b6f complexes. Water-soluble peridinin-chlorophyll a-protein (PCP) and orange carotenoid protein (OCP) are also established. Some functions of carotenoids in photosynthesis are also briefly summarized.
Keywords: algal phylogeny; biosynthesis of carotenoids; distribution of carotenoids; function of carotenoids; pigment-protein complex algal phylogeny; biosynthesis of carotenoids; distribution of carotenoids; function of carotenoids; pigment-protein complex
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.

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MDPI and ACS Style

Takaichi, S. Carotenoids in Algae: Distributions, Biosyntheses and Functions. Mar. Drugs 2011, 9, 1101-1118.

AMA Style

Takaichi S. Carotenoids in Algae: Distributions, Biosyntheses and Functions. Marine Drugs. 2011; 9(6):1101-1118.

Chicago/Turabian Style

Takaichi, Shinichi. 2011. "Carotenoids in Algae: Distributions, Biosyntheses and Functions." Mar. Drugs 9, no. 6: 1101-1118.



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