Gradual Soil Water Depletion Results in Reversible Changes of Gene Expression, Protein Profiles, Ecophysiology, and Growth Performance in Populus euphratica, a Poplar Growing in Arid Regions
| Autor: | Kris Laukens, Jean-Francois Hausman, Didier Le Thiec, Basia Vinocur, Marie-Béatrice Bogeat-Triboulot, Thomas Teichmann, Jenny Renaut, Laurent Jouve, Erwin Dreyer, Payam Fayyaz, Mikael Brosché, Jaakko Kangasjärvi, Erwin Witters, Andrea Polle, Arie Altman |
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| Přispěvatelé: | Ecologie et Ecophysiologie Forestières [devient SILVA en 2018] (EEF), Institut National de la Recherche Agronomique (INRA)-Université de Lorraine (UL), University of Helsinki, Centre de Recherche Public - Gabriel Lippmann (LUXEMBOURG), Institut für Forstbotanik, Georg-August-University [Göttingen], The Hebrew University of Jerusalem (HUJ), University of Antwerp (UA) |
| Rok vydání: | 2006 |
| Předmět: |
0106 biological sciences
Physiology Climate Plant Science zone aride Plant Roots 01 natural sciences Soil Salicaceae Gene Expression Regulation Plant Génétique des plantes réversibilité Plant Proteins 2. Zero hunger arbre 0303 health sciences biology food and beverages Plant physiology POPULUS EUPHRATICA WATER DEFICIT DEFICIT HYDRIQUE DU SOL Populus protéine Shoot expression des gènes Research Article Ecophysiology gene expression Populus euphratica Drought tolerance Plants genetics Acclimatization [SDV.GEN.GPL]Life Sciences [q-bio]/Genetics/Plants genetics 03 medical and health sciences tige Botany Genetics Ecosystem 030304 developmental biology Gene Expression Profiling fungi Water Xylem 15. Life on land biology.organism_classification croissance résistance à la sécheresse racine Plant Leaves 010606 plant biology & botany |
| Zdroj: | HAL Plant Physiology Plant Physiology, American Society of Plant Biologists, 2007, 143 (2), pp.876-892 Plant physiology Plant Physiology 2 (143), 876-892. (2007) |
| ISSN: | 1532-2548 0032-0889 |
| DOI: | 10.1104/pp.106.088708 |
| Popis: | The responses of Populus euphratica Oliv. plants to soil water deficit were assessed by analyzing gene expression, protein profiles, and several plant performance criteria to understand the acclimation of plants to soil water deficit. Young, vegetatively propagated plants originating from an arid, saline field site were submitted to a gradually increasing water deficit for 4 weeks in a greenhouse and were allowed to recover for 10 d after full reirrigation. Time-dependent changes and intensity of the perturbations induced in shoot and root growth, xylem anatomy, gas exchange, and water status were recorded. The expression profiles of approximately 6,340 genes and of proteins and metabolites (pigments, soluble carbohydrates, and oxidative compounds) were also recorded in mature leaves and in roots (gene expression only) at four stress levels and after recovery. Drought successively induced shoot growth cessation, stomatal closure, moderate increases in oxidative stress-related compounds, loss of CO2 assimilation, and root growth reduction. These effects were almost fully reversible, indicating that acclimation was dominant over injury. The physiological responses were paralleled by fully reversible transcriptional changes, including only 1.5% of the genes on the array. Protein profiles displayed greater changes than transcript levels. Among the identified proteins for which expressed sequence tags were present on the array, no correlation was found between transcript and protein abundance. Acclimation to water deficit involves the regulation of different networks of genes in roots and shoots. Such diverse requirements for protecting and maintaining the function of different plant organs may render plant engineering or breeding toward improved drought tolerance more complex than previously anticipated. |
| Databáze: | OpenAIRE |
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