Depletion of stromal P(i) induces high 'energy-dependent' antenna exciton quenching (q(E)) by decreasing proton conductivity at CF(O)-CF(1) ATP synthase.

@article{Takizawa2008DepletionOS,
  title={Depletion of stromal P(i) induces high 'energy-dependent' antenna exciton quenching (q(E)) by decreasing proton conductivity at CF(O)-CF(1) ATP synthase.},
  author={Kenji Takizawa and Atsuko Kanazawa and David M. Kramer},
  journal={Plant, cell & environment},
  year={2008},
  volume={31 2},
  pages={235-43}
}
This work tests two models to account for the effects of depletion of stromal inorganic phosphate (P(i)), which results in down-regulation of light capture via the exciton quenching (q(E)) mechanism and has been proposed to act in feedback regulation of the light reactions. In both models, antenna down-regulation is activated by acidification of the lumen, despite the fact that linear electron flow (LEF) (and associated proton flux) is decreased upon P(i) depletion. In one model, an imbalance… CONTINUE READING

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