title: Anion channels/transporters in plants: from molecular bases to regulatory networks.
abstract: Anion channels/transporters are key to a wide spectrum of physiological functions in plants, such as osmoregulation, cell signaling, plant nutrition and compartmentalization of metabolites, and metal tolerance. The recent identification of gene families encoding some of these transport systems opened the way for gene expression studies, structure-function analyses of the corresponding proteins, and functional genomics approaches toward further understanding of their integrated roles in planta. This review, based on a few selected examples, illustrates that the members of a given gene family exhibit a diversity of substrate specificity, regulation, and intracellular localization, and are involved in a wide range of physiological functions. It also shows that post-translational modifications of transport proteins play a key role in the regulation of anion transport activity. Key questions arising from the increasing complexity of networks controlling anion transport in plant cells (the existence of redundancy, cross talk, and coordination between various pathways and compartments) are also addressed.
authors.affiliation: Institut des Sciences du Végétal, CNRS, 91198 Gif sur Yvette Cedex France. helene.barbier-brygoo@isv.cnrs-gif.fr
authors.forename: Hélène
authors.initials: H
authors.lastname: Barbier-Brygoo
authors.forename: Alexis
authors.initials: A
authors.lastname: De Angeli
authors.forename: Sophie
authors.initials: S
authors.lastname: Filleur
authors.forename: Jean-Marie
authors.initials: JM
authors.lastname: Frachisse
authors.forename: Franco
authors.initials: F
authors.lastname: Gambale
authors.forename: Sébastien
authors.initials: S
authors.lastname: Thomine
authors.forename: Stefanie
authors.initials: S
authors.lastname: Wege
mesh_terms: D017920:Antiporters / Q000235:genetics / Q000378:metabolism / Q000502:physiology*; D017360:Arabidopsis / Q000235:genetics / Q000378:metabolism*; D029681:Arabidopsis Proteins / Q000235:genetics / Q000378:metabolism / Q000502:physiology*; D001692:Biological Transport / Q000502:physiology; D002462:Cell Membrane / Q000737:chemistry / Q000378:metabolism; D018506:Gene Expression Regulation, Plant; D008954:Models, Biological; D005810:Multigene Family / Q000502:physiology; D009566:Nitrates / Q000378:metabolism; D010766:Phosphorylation; D011499:Protein Processing, Post-Translational; D013379:Substrate Specificity
chemical_list: D017920:Antiporters; D029681:Arabidopsis Proteins; D009566:Nitrates