H<sup>+</sup> Transport by K<sup>+</sup> EXCHANGE ANTIPORTER3 Promotes Photosynthesis and Growth in Chloroplast ATP Synthase Mutants
Viviana Correa Galvis, Deserah D. Strand, Michaela Messer, Wolfram Thiele, Stephanie Bethmann, Dennis Hübner, Michał Uflewski, Elias Kaiser, Beata Siemiątkowska, Bethan A. Morris, Szilvia Z. Tóth, Mutsumi Watanabe, Franziska Brückner, Rainer Höfgen, Peter Jahns, Mark Aurel Schöttler, Ute Armbruster
Abstract
background reduces pH-dependent NPQ and increases photosystem II efficiency. Taken together, our data provide evidence that under conditions where cpATP synthase activity is low, a KEA3-dependent reduction of ΔpH benefits photosynthesis and growth.
Topics & Concepts
ThylakoidPhotosystem IIElectrochemical gradientATP synthaseChloroplastChemiosmosisPhotosynthesisElectron transport chainPhotophosphorylationAntiporterCytochrome b6f complexBiophysicsProton transportPhotosystemChemistryNigericinBiochemistryPhotosystem IIon transporterBiologyMembraneEnzymeGenePhotosynthetic Processes and MechanismsATP Synthase and ATPases ResearchMitochondrial Function and Pathology