title: Ions channels/transporters and chloroplast regulation.
abstract: Ions play fundamental roles in all living cells and their gradients are often essential to fuel transports, to regulate enzyme activities and to transduce energy within and between cells. Their homeostasis is therefore an essential component of the cell metabolism. Ions must be imported from the extracellular matrix to their final subcellular compartments. Among them, the chloroplast is a particularly interesting example because there, ions not only modulate enzyme activities, but also mediate ATP synthesis and actively participate in the building of the photosynthetic structures by promoting membrane-membrane interaction. In this review, we first provide a comprehensive view of the different machineries involved in ion trafficking and homeostasis in the chloroplast, and then discuss peculiar functions exerted by ions in the frame of photochemical conversion of absorbed light energy.
authors.affiliation: CNRS, Laboratoire de Physiologie Cellulaire & Végétale, UMR 5168, 17 rue des Martyrs, F-38054 Grenoble, France; Univ. Grenoble Alpes, LPCV, F-38054 Grenoble, France; CEA, DSV, iRTSV, LPCV, F-38054 Grenoble, France; INRA, LPCV, USC1359, 17 rue des Martyrs, F-38054 Grenoble, France. Electronic address: giovanni.finazzi@cea.fr.
authors.forename: Giovanni
authors.initials: G
authors.lastname: Finazzi
authors.affiliation: CNRS, Laboratoire de Physiologie Cellulaire & Végétale, UMR 5168, 17 rue des Martyrs, F-38054 Grenoble, France; Univ. Grenoble Alpes, LPCV, F-38054 Grenoble, France; CEA, DSV, iRTSV, LPCV, F-38054 Grenoble, France; INRA, LPCV, USC1359, 17 rue des Martyrs, F-38054 Grenoble, France.
authors.forename: Dimitris
authors.initials: D
authors.lastname: Petroutsos
authors.affiliation: CNRS, Laboratoire de Physiologie Cellulaire & Végétale, UMR 5168, 17 rue des Martyrs, F-38054 Grenoble, France; Univ. Grenoble Alpes, LPCV, F-38054 Grenoble, France; CEA, DSV, iRTSV, LPCV, F-38054 Grenoble, France; INRA, LPCV, USC1359, 17 rue des Martyrs, F-38054 Grenoble, France.
authors.forename: Martino
authors.initials: M
authors.lastname: Tomizioli
authors.affiliation: CNRS, Laboratoire de Physiologie Cellulaire & Végétale, UMR 5168, 17 rue des Martyrs, F-38054 Grenoble, France; Univ. Grenoble Alpes, LPCV, F-38054 Grenoble, France; CEA, DSV, iRTSV, LPCV, F-38054 Grenoble, France; INRA, LPCV, USC1359, 17 rue des Martyrs, F-38054 Grenoble, France.
authors.forename: Serena
authors.initials: S
authors.lastname: Flori
authors.affiliation: CNRS, Laboratoire de Physiologie Cellulaire & Végétale, UMR 5168, 17 rue des Martyrs, F-38054 Grenoble, France; Univ. Grenoble Alpes, LPCV, F-38054 Grenoble, France; CEA, DSV, iRTSV, LPCV, F-38054 Grenoble, France; INRA, LPCV, USC1359, 17 rue des Martyrs, F-38054 Grenoble, France.
authors.forename: Emeline
authors.initials: E
authors.lastname: Sautron
authors.affiliation: Fermentalg SA, 4 bis rue Rivière, F-33500 Libourne, France.
authors.forename: Valeria
authors.initials: V
authors.lastname: Villanova
authors.affiliation: CNRS, Laboratoire de Physiologie Cellulaire & Végétale, UMR 5168, 17 rue des Martyrs, F-38054 Grenoble, France; Univ. Grenoble Alpes, LPCV, F-38054 Grenoble, France; CEA, DSV, iRTSV, LPCV, F-38054 Grenoble, France; INRA, LPCV, USC1359, 17 rue des Martyrs, F-38054 Grenoble, France.
authors.forename: Norbert
authors.initials: N
authors.lastname: Rolland
authors.affiliation: CNRS, Laboratoire de Physiologie Cellulaire & Végétale, UMR 5168, 17 rue des Martyrs, F-38054 Grenoble, France; Univ. Grenoble Alpes, LPCV, F-38054 Grenoble, France; CEA, DSV, iRTSV, LPCV, F-38054 Grenoble, France; INRA, LPCV, USC1359, 17 rue des Martyrs, F-38054 Grenoble, France. Electronic address: daphne.berny@cea.fr.
authors.forename: Daphné
authors.initials: D
authors.lastname: Seigneurin-Berny
mesh_terms: D027321:Anion Transport Proteins / Q000378:metabolism; D017360:Arabidopsis / Q000378:metabolism; D029681:Arabidopsis Proteins / Q000378:metabolism; D002118:Calcium / Q000378:metabolism; D027682:Cation Transport Proteins / Q000378:metabolism; D002736:Chloroplasts / Q000378:metabolism*; D017136:Ion Transport; D026901:Membrane Transport Proteins / Q000378:metabolism*; D010788:Photosynthesis; D020524:Thylakoids / Q000378:metabolism
chemical_list: D027321:Anion Transport Proteins; D029681:Arabidopsis Proteins; D027682:Cation Transport Proteins; D026901:Membrane Transport Proteins; D002118:Calcium
keywords: Chloroplast envelope; Ions trafficking; Photosynthesis; Proton motive force; Thylakoids