Role of Allophycocyanin as a Light-Harvesting Pigment in Cyanobacteria

Role of Allophycocyanin as a Light-Harvesting Pigment in Cyanobacteria

Photosynthetic action spectra of several cyanobacteria show a peak at about 650 nm, the height of which is correlated with allophycocyanin content in the strains examined. Allophycocyanin harvests light more efficiently than do phycocyanin and phycoerythrin. The contribution of chlorophyll a absorpt...

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Veröffentlicht in:Proceedings of the National Academy of Sciences - PNAS 1973-11, Vol.70 (11), p.3130-3133
Hauptverfasser: Lemasson, C., De Marsac, N. Tandeau, Cohen-Bazire, G.
Format: Artikel
Sprache:eng
Schlagworte:
Absorption spectra
Biological pigments
Biological Sciences: Microbiology
Chlorophylls
Cyanobacteria
Energy transfer
Phycobilisome
Pigments
Plant cells
Visible spectrum
Wavelengths
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Zusammenfassung:Photosynthetic action spectra of several cyanobacteria show a peak at about 650 nm, the height of which is correlated with allophycocyanin content in the strains examined. Allophycocyanin harvests light more efficiently than do phycocyanin and phycoerythrin. The contribution of chlorophyll a absorption to photosynthetic activity is barely detectable in cells of normal pigment composition. Chlorophyll a becomes the major light-harvesting pigment in cells that have been physiologically depleted of phycobiliproteins.
ISSN:0027-8424
1091-6490
DOI:10.1073/pnas.70.11.3130