Reduced photoinhibition of a phycocyanin-deficient mutant of Synechocystis PCC 6714

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The effects on photoinhibition of light-harvesting pigments in microalgal cells were examined using the wild type and a phycocyanin- deficient mutant (PD-1) of Synechosystis PCC 6714. Mutant PD-1 showed higher resistance to high light than the wild type in terms of the decline of photosynthetic activity at any light intensity and with various cell densities. This suggests that the loss of productivity induced by high light intensity would be improved by reducing the content of light-harvesting pigments.

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