Implications of alternative electron sinks in increased resistance of PSII and PSI photochemistry to high light stress in cold-acclimated Arabidopsis thaliana

@article{Ivanov2012ImplicationsOA,
  title={Implications of alternative electron sinks in increased resistance of PSII and PSI photochemistry to high light stress in cold-acclimated Arabidopsis thaliana},
  author={A. G. Ivanov and Del Rosso and L. V. Savitch and P. Stachula and M. Rosembert and G. Oquist and V. Hurry and N. P. A. H{\"u}ner},
  journal={Photosynthesis Research},
  year={2012},
  volume={113},
  pages={191-206}
}
Exposure of control (non-hardened) Arabidopsis leaves to high light stress at 5 °C resulted in a decrease of both photosystem II (PSII) (45 %) and Photosystem I (PSI) (35 %) photochemical efficiencies compared to non-treated plants. In contrast, cold-acclimated (CA) leaves exhibited only 35 and 22 % decrease of PSII and PSI photochemistry, respectively, under the same conditions. This was accompanied by an accelerated rate of P700+ re-reduction, indicating an up-regulation of PSI-dependent… CONTINUE READING

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