title: Profiling of sugar transporter genes in grapevine coping with water deficit.
abstract: The profiling of grapevine (Vitis vinifera L.) genes under water deficit was specifically targeted to sugar transporters. Leaf water status was characterized by physiological parameters and soluble sugars content. The expression analysis provided evidence that VvHT1 hexose transporter gene was strongly down-regulated by the increased sugar content under mild water-deficit. The genes of monosaccharide transporter VvHT5, sucrose carrier VvSUC11, vacuolar invertase VvGIN2 and grape ASR (ABA, stress, ripening) were up-regulated under severe water stress. Their regulation in a drought-ABA signalling network and possible roles in complex interdependence between sugar subcellular partitioning and cell influx/efflux under Grapevine acclimation to dehydration are discussed.
authors.affiliation: Université de Poitiers, UMR CNRS 7267 Écologie & Biologie des Interactions, Équipe Sucres & Echanges Végétaux/Environnement - SEVE, TSA 51106, 86073 Poitiers Cedex 9, France. Electronic address: anna.medici@supagro.inra.fr.
authors.forename: Anna
authors.initials: A
authors.lastname: Medici
authors.affiliation: Université de Poitiers, UMR CNRS 7267 Écologie & Biologie des Interactions, Équipe Sucres & Echanges Végétaux/Environnement - SEVE, TSA 51106, 86073 Poitiers Cedex 9, France. Electronic address: maryse.laloi@univ-poitiers.fr.
authors.forename: Maryse
authors.initials: M
authors.lastname: Laloi
authors.affiliation: Université de Poitiers, UMR CNRS 7267 Écologie & Biologie des Interactions, Équipe Sucres & Echanges Végétaux/Environnement - SEVE, TSA 51106, 86073 Poitiers Cedex 9, France. Electronic address: rossitza.atanassova@univ-poitiers.fr.
authors.forename: Rossitza
authors.initials: R
authors.lastname: Atanassova
mesh_terms: D000040:Abscisic Acid / Q000494:pharmacology; D050260:Carbohydrate Metabolism / Q000235:genetics*; D003198:Computer Simulation; D055864:Droughts; D020869:Gene Expression Profiling; D026901:Membrane Transport Proteins / Q000235:genetics*; D018515:Plant Leaves / Q000187:drug effects / Q000235:genetics / Q000378:metabolism / Q000502:physiology; D010940:Plant Proteins / Q000235:genetics*; D011401:Promoter Regions, Genetic / Q000235:genetics; D012995:Solubility; D013312:Stress, Physiological / Q000235:genetics; D027843:Vitis / Q000187:drug effects / Q000235:genetics* / Q000378:metabolism / Q000502:physiology*; D014867:Water / Q000378:metabolism*
chemical_list: D026901:Membrane Transport Proteins; D010940:Plant Proteins; D014867:Water; D000040:Abscisic Acid
keywords: Abscisic acid, stress and ripening proteins; Gene expression regulation; Grapevine; Sugar transporters; Vacuolar invertase; Water deficit