Photosynthesis accessory pigments

Carotenoids protect photosynthetic organisms against potentially harmful photooxidative processes and are essential structural components of the photosynthetic antenna and reaction center complexes. Plant carotenoids play fundamental roles as accessory pigments for photosynthesis, as protection against photooxidation, and... 

Carotenoids Organic molecules that function as accessory pigments in phytoplankton photosynthesis. 

This website provides an overview of photosynthesis, including leaf structure, the nature of light, chlorophyll and accessory pigments, chloroplast, and stages of photosynthesis. Several links to other photosynthesis resources are also provided. 

The carotenoids that serve as accessory pigments for photosynthesis absorb strongly in the blue region (425-490 nm Table 4-1) and moderately in the green region (490-560 nm), usually having triple-banded spectra from 400 to 550 nm. For P-carotene in hexane, the three bands are centered at... 

Figure 5-15. Schematic model for a series representation of the two photosystems of photosynthesis, indicating the stoichiometry of various factors involved in the reduction of C02 to a carbohydrate ( CH20)). Some of the photons (hv) are captured by the accessory pigments and Chi a in the light-harvesting antennae these excitations are then fed into the two photosystems, but primarily to Photosystem II.

Phycocyanin and phycoerythrin, biliproteins of blue-green and red algae functioning as accessory pigments of photosynthesis, are easily obtained in large amounts and therefore have extensively been used as model compounds for phytochrome. 

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