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Metabolite modifications in Solanum lycopersicum roots and leaves under cadmium stress

hal.structure.identifierUniversité de Tunis
dc.contributor.authorZOGHLAMI, Latifa Boulila
hal.structure.identifierUniversité de Tunis
dc.contributor.authorDJEBALI, Wahbi
hal.structure.identifierUniversité de Tunis
dc.contributor.authorABBES, Zouhaier
hal.structure.identifierUniversité de Tunis
dc.contributor.authorHÉDIJI, Hédia
hal.structure.identifierBiologie du fruit et pathologie [BFP]
dc.contributor.authorMAUCOURT, Mickael
hal.structure.identifierBiologie du fruit et pathologie [BFP]
dc.contributor.authorMOING, Annick
hal.structure.identifierInstitut Sophia Agrobiotech [ISA]
dc.contributor.authorBROUQUISSE, Renaud
hal.structure.identifierUniversité de Tunis
dc.contributor.authorCHAIBI, Wided
dc.date.issued2011
dc.identifier.issn1684-5315
dc.description.abstractEnThe effects of cadmium (Cd) were investigated on growth and metabolite profiling in roots and leaves of tomato (Solanum lycopersicum L., Var. Ibiza F1) plants exposed for 3 and 10 days to various CdCl(2) concentrations (0 - 300 mu M). The aim of this study was to describe metabolite modifications in response to Cd stress and to identify Cd stress markers in the roots and leaves of tomato plants. During the treatment, Cd accumulated significantly in the roots compared to stems and leaves. Plant growth (root, stem and leaf) decreased when Cd concentration increased. The analysis of (1)H-NMR spectra of polar extracts showed clear differences between metabolites amounts (soluble sugars, organic and amino acids) in 30 and 300 mu M Cd-treated plants versus control ones. Among soluble sugars and organic acids, glucose, fructose and citrate contents significantly increased, by a factor 2 to 5 in both leaves and roots of Cd treated plants during the first three days of the treatment and then only in roots. In addition, Cd induced qualitative and quantitative changes in amino acid contents in the roots. Asparagine, glutamine and branched chain amino acids (valine, isoleucine, phenylalanine and tryptophane) significantly accumulated after 10 days of Cd exposure. Asparagine content which increased by 26 fold in the roots of 300 mu M Cd treated plants when compared with control ones, was found to be a good marker for Cd stress. In contrast, few modifications occurred in the leaves in response to Cd, except for tyrosine which content was highly increased (by 10 fold) after three days of treatment with 30 mu M. Taken together, our results show that, the exposure of tomato plants to various Cd concentrations results in significant changes in primary metabolism compounds, especially in the accumulation of some amino and organic acids involved in cellular compartmentation and detoxification of Cd.
dc.language.isoen
dc.publisherAcademic Journals
dc.rights.urihttp://creativecommons.org/licenses/by/
dc.subjectBIOLOGIE DU DEVELOPPEMENT
dc.subjectBIOLOGIE VEGETALE
dc.subjectCROISSANCE DE LA PLANTE
dc.title.enMetabolite modifications in Solanum lycopersicum roots and leaves under cadmium stress
dc.typeArticle de revue
dc.subject.halSciences du Vivant [q-bio]/Biotechnologies
bordeaux.journalAfrican Journal of Biotechnology
bordeaux.page567-579
bordeaux.volume10
bordeaux.issue4
bordeaux.peerReviewedoui
hal.identifierhal-02646003
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02646003v1
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