Zeaxanthin Protects Plant Photosynthesis by Modulating Chlorophyll Triplet Yield in Specific Light-harvesting Antenna Subunits*

@article{DallOsto2012ZeaxanthinPP,
  title={Zeaxanthin Protects Plant Photosynthesis by Modulating Chlorophyll Triplet Yield in Specific Light-harvesting Antenna Subunits*},
  author={Luca Dall’Osto and Nancy E. Holt and Shanti Kaligotla and Marcel Fuciman and Stefano Cazzaniga and Donatella Carbonera and Harry A Frank and Jean Alric and Roberto Bassi},
  journal={The Journal of Biological Chemistry},
  year={2012},
  volume={287},
  pages={41820 - 41834}
}
Background: The plant carotenoid zeaxanthin is accumulated under excess light. Results: Zeaxanthin induces a red shift in the carotenoid triplet excited state spectrum and reveals a higher efficiency in controlling chlorophyll triplet formation. Conclusion: Binding of zeaxanthin to specific proteins modulates the yield of dangerous chlorophyll excited states and protects photosynthesis from over-excitation. Significance: Functional dissection of zeaxanthin-dependent photoprotective mechanisms… 

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