Changes in plasma membrane lipids, aquaporins and proton pump of broccoli roots, as an adaptation mechanism to salinity
| Autor: | María del Carmen Martínez-Ballesta, Micaela Carvajal, Christophe Maurel, Luis López-Pérez |
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| Přispěvatelé: | Departemento de Nutricion Vegetal, Centro de Edafologia y Biologia Aplicada del Segura, Biochimie et Physiologie Moléculaire des Plantes (BPMP), Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut National de la Recherche Agronomique (INRA)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro), Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro)-Institut national d'enseignement supérieur pour l'agriculture, l'alimentation et l'environnement (Institut Agro), Université de Montpellier (UM)-Centre international d'études supérieures en sciences agronomiques (Montpellier SupAgro)-Institut national d’études supérieures agronomiques de Montpellier (Montpellier SupAgro)-Institut National de la Recherche Agronomique (INRA)-Centre National de la Recherche Scientifique (CNRS) |
| Jazyk: | angličtina |
| Rok vydání: | 2009 |
| Předmět: |
0106 biological sciences
Salinity MESH: Plant Roots Plant Science Sodium Chloride 01 natural sciences Biochemistry Plant Roots MESH: Proton-Translocating ATPases Electrolytes MESH: Electrolytes chemistry.chemical_classification 0303 health sciences Chemistry Lipid composition General Medicine Salt Tolerance Adaptation Physiological Proton-Translocating ATPases MESH: Permeability H+-ATPase Plasma membrane MESH: Sodium Chloride Membrane permeability Membrane lipids MESH: Biological Transport Aquaporin Brassica Horticulture Aquaporins Permeability 03 medical and health sciences Membrane Lipids MESH: Aquaporins MESH: Water [SDV.BV]Life Sciences [q-bio]/Vegetal Biology Molecular Biology 030304 developmental biology Water transport MESH: Salt-Tolerance ACL Cell Membrane Broccoli Fatty acid Water Biological Transport MESH: Brassica MESH: Adaptation Physiological Sterol Membrane protein MESH: Membrane Lipids 010606 plant biology & botany MESH: Cell Membrane |
| Zdroj: | Phytochemistry Phytochemistry, Elsevier, 2009, 70 (4), pp.492-500. ⟨10.1016/j.phytochem.2009.01.014⟩ |
| ISSN: | 0031-9422 |
| DOI: | 10.1016/j.phytochem.2009.01.014⟩ |
| Popis: | Publication Inra prise en compte dans l'analyse bibliométrique des publications scientifiques mondiales sur les Fruits, les Légumes et la Pomme de terre. Période 2000-2012. http://prodinra.inra.fr/record/256699; International audience; Salinity stress is known to modify the plasma membrane lipid and protein composition of plant cells. In this work, we determined the effects of salt stress on the lipid composition of broccoli root plasma membrane vesicles and investigated how these changes could affect water transport via aquaporins. Brassica oleracea L. var. Italica plants treated with different levels of NaCl (0, 40 or 80mM) showed significant differences in sterol and fatty acid levels. Salinity increased linoleic (18:2) and linolenic (18:3) acids and stigmasterol, but decreased palmitoleic (16:1) and oleic (18:1) acids and sitosterol. Also, the unsaturation index increased with salinity. Salinity increased the expression of aquaporins of the PIP1 and PIP2 subfamilies and the activity of the plasma membrane H(+)-ATPase. However, there was no effect of NaCl on water permeability (P(f)) values of root plasma membrane vesicles, as determined by stopped-flow light scattering. The counteracting changes in lipid composition and aquaporin expression observed in NaCl-treated plants could allow to maintain the membrane permeability to water and a higher H(+)-ATPase activity, thereby helping to reduce partially the Na(+) concentration in the cytoplasm of the cell while maintaining water uptake via cell-to-cell pathways. We propose that the modification of lipid composition could affect membrane stability and the abundance or activity of plasma membrane proteins such as aquaporins or H(+)-ATPase. This would provide a mechanism for controlling water permeability and for acclimation to salinity stress. |
| Databáze: | OpenAIRE |
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