ATP Synthase Repression in Tobacco Restricts Photosynthetic Electron Transport, CO2 Assimilation, and Plant Growth by Overacidification of the Thylakoid Lumen[OA]

摘要

The authors use a transgenic approach to show that a close adjustment of ATP synthase activity to linear electron flux is essential for fine-tuning the proton motive force. If ATP synthase activity is too low, lumen overacidification restricts linear electron flux and initiates photoprotective mechanisms (nonphotochemical quenching) in low light, diminishing the quantum efficiency of CO2 fixation.