title: Phosphate/zinc interaction analysis in two lettuce varieties reveals contrasting effects on biomass, photosynthesis, and dynamics of Pi transport.
abstract: Inorganic phosphate (Pi) and Zinc (Zn) are essential nutrients for normal plant growth. Interaction between these elements has been observed in many crop plants. Despite its agronomic importance, the biological significance and genetic basis of this interaction remain largely unknown. Here we examined the Pi/Zn interaction in two lettuce (Lactuca sativa) varieties, namely, "Paris Island Cos" and "Kordaat." The effects of variation in Pi and Zn supply were assessed on biomass and photosynthesis for each variety. Paris Island Cos displayed better growth and photosynthesis compared to Kordaat under all the conditions tested. Correlation analysis was performed to determine the interconnectivity between Pi and Zn intracellular contents in both varieties. Paris Island Cos showed a strong negative correlation between the accumulation levels of Pi and Zn in shoots and roots. However, no relation was observed for Kordaat. The increase of Zn concentration in the medium causes a decrease in dynamics of Pi transport in Paris Island Cos, but not in Kordaat plants. Taken together, results revealed a contrasting behavior between the two lettuce varieties in terms of the coregulation of Pi and Zn homeostasis and provided evidence in favor of a genetic basis for the interconnection of these two elements.
authors.affiliation: Biochimie et Physiologie Moléculaire des Plantes, Institut National de la Recherche Agronomique, Centre National de la Recherche Scientifique, Université Montpellier 2, Montpellier SupAgro. Bat 7, 2 Place Viala, 34060 Montpellier Cedex 2, France ; Laboratoire des Plantes Extrêmophiles, Centre de Biotechnologie de Borj Cédria, BP 901, 2050 Hammam-Lif, Tunisia.
authors.forename: Nadia
authors.initials: N
authors.lastname: Bouain
authors.affiliation: Biochimie et Physiologie Moléculaire des Plantes, Institut National de la Recherche Agronomique, Centre National de la Recherche Scientifique, Université Montpellier 2, Montpellier SupAgro. Bat 7, 2 Place Viala, 34060 Montpellier Cedex 2, France.
authors.forename: Mushtak
authors.initials: M
authors.lastname: Kisko
authors.affiliation: Laboratoire des Plantes Extrêmophiles, Centre de Biotechnologie de Borj Cédria, BP 901, 2050 Hammam-Lif, Tunisia.
authors.forename: Aida
authors.initials: A
authors.lastname: Rouached
authors.affiliation: Laboratoire d'Ecophysiologie des Plantes Sous Stress Environnementaux, UMR 759, INRA/SUPAGRO, 34060 Montpellier Cedex 1, France.
authors.forename: Myriam
authors.initials: M
authors.lastname: Dauzat
authors.affiliation: Biochimie et Physiologie Moléculaire des Plantes, Institut National de la Recherche Agronomique, Centre National de la Recherche Scientifique, Université Montpellier 2, Montpellier SupAgro. Bat 7, 2 Place Viala, 34060 Montpellier Cedex 2, France.
authors.forename: Benoit
authors.initials: B
authors.lastname: Lacombe
authors.affiliation: Laboratoire de Protection et Amélioration des Plantes, Centre de Biotechnologie de Sfax, BP 1177, 3018 Sfax, Tunisia.
authors.forename: Nibras
authors.initials: N
authors.lastname: Belgaroui
authors.affiliation: Laboratoire des Plantes Extrêmophiles, Centre de Biotechnologie de Borj Cédria, BP 901, 2050 Hammam-Lif, Tunisia.
authors.forename: Tahar
authors.initials: T
authors.lastname: Ghnaya
authors.affiliation: Biochimie et Physiologie Moléculaire des Plantes, Institut National de la Recherche Agronomique, Centre National de la Recherche Scientifique, Université Montpellier 2, Montpellier SupAgro. Bat 7, 2 Place Viala, 34060 Montpellier Cedex 2, France.
authors.forename: Jean-Claude
authors.initials: JC
authors.lastname: Davidian
authors.affiliation: Biochimie et Physiologie Moléculaire des Plantes, Institut National de la Recherche Agronomique, Centre National de la Recherche Scientifique, Université Montpellier 2, Montpellier SupAgro. Bat 7, 2 Place Viala, 34060 Montpellier Cedex 2, France.
authors.forename: Pierre
authors.initials: P
authors.lastname: Berthomieu
authors.affiliation: Laboratoire des Plantes Extrêmophiles, Centre de Biotechnologie de Borj Cédria, BP 901, 2050 Hammam-Lif, Tunisia.
authors.forename: Chedly
authors.initials: C
authors.lastname: Abdelly
authors.affiliation: Biochimie et Physiologie Moléculaire des Plantes, Institut National de la Recherche Agronomique, Centre National de la Recherche Scientifique, Université Montpellier 2, Montpellier SupAgro. Bat 7, 2 Place Viala, 34060 Montpellier Cedex 2, France.
authors.forename: Hatem
authors.identifier: 0000-0002-7751-0477
authors.initials: H
authors.lastname: Rouached
mesh_terms: D001692:Biological Transport; D018533:Biomass; D018545:Lactuca / Q000254:growth & development / Q000378:metabolism*; D010710:Phosphates / Q000008:administration & dosage / Q000378:metabolism*; D010788:Photosynthesis; D018517:Plant Roots / Q000254:growth & development / Q000378:metabolism; D018520:Plant Shoots / Q000254:growth & development / Q000378:metabolism; D015032:Zinc / Q000008:administration & dosage / Q000378:metabolism*
chemical_list: D010710:Phosphates; D015032:Zinc