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Publication Details
AFRICAN RESEARCH NEXUS
SHINING A SPOTLIGHT ON AFRICAN RESEARCH
agricultural and biological sciences
Proteomic plasticity of two Eucalyptus genotypes under contrasted water regimes in the field
Plant, Cell and Environment, Volume 35, No. 4, Year 2012
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Description
Water deficit affects tree growth and limits wood production. In an attempt to identify the molecular triggers of adaptation mechanisms to water deficit in Eucalyptus, we investigated protein expression patterns of two ecophysiologically contrasted Eucalyptus genotypes. They were grown in the field in either natural conditions or irrigated for 7 weeks during the dry season in the Republic of Congo. At the phenotypic level, genotype (G), treatment (T) and/or G×T interaction effects were observed for above- and below-ground biomass-related traits. At the molecular level, changes in protein abundance were recorded in leaves (acidic pH 4-7, and basic pH 7-11, proteomes) and stems (acidic proteome) using two-dimensional gel electrophoresis (2-DE). One third of the detected protein spots displayed significant G, T and/or G×T effects, and 158 of them were identified by tandem mass spectrometry (LC-MS/MS) analysis. Thus, several proteins whose molecular plasticity was genetically controlled (i.e. G×T effect) were revealed, highlighting adaptive mechanisms to water deficit specific to each genotype, namely cell wall modification, cell detoxification and osmoregulation. Transcript abundances corresponding to G×T proteins were also investigated by quantitative RT-PCR. These proteins represent relevant targets to improve drought resistance in this ecologically and economically important forest tree genus. © 2011 Blackwell Publishing Ltd.
Authors & Co-Authors
Bedon, Frank
France, Cestas
Biodiversité, Gènes et Communautés Biogeco
France, Bordeaux
Université de Bordeaux
Australia, Melbourne
Csiro Plant Industry
Villar, Emilie
France, Cestas
Biodiversité, Gènes et Communautés Biogeco
France, Bordeaux
Université de Bordeaux
France, Montpellier
Amélioration Génétique et Adaptation Des Plantes Méditerranéennes et Tropicales Agap
Congo
Crdpi
Vincent, Delphine
France, Cestas
Biodiversité, Gènes et Communautés Biogeco
France, Bordeaux
Université de Bordeaux
Dupuy, J. W.
France, Bordeaux
Université de Bordeaux
Lomenech, Anne Marie
France, Bordeaux
Université de Bordeaux
Mabialangoma, André
Congo
Crdpi
Chaumeil, Philippe
France, Cestas
Biodiversité, Gènes et Communautés Biogeco
France, Bordeaux
Université de Bordeaux
Barre, Aurélien
France, Bordeaux
Université de Bordeaux
France, Bordeaux
Laboratoire Cnrs Centre de Génomique Fonctionnelle de Bordeaux
Plomion, Christophe
France, Cestas
Biodiversité, Gènes et Communautés Biogeco
France, Bordeaux
Université de Bordeaux
Gion, Jean Marc
France, Cestas
Biodiversité, Gènes et Communautés Biogeco
France, Bordeaux
Université de Bordeaux
France, Montpellier
Amélioration Génétique et Adaptation Des Plantes Méditerranéennes et Tropicales Agap
Statistics
Citations: 36
Authors: 10
Affiliations: 6
Identifiers
Doi:
10.1111/j.1365-3040.2011.02452.x
ISSN:
01407791
Research Areas
Environmental
Genetics And Genomics
Study Approach
Quantitative
Study Locations
Congo