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hal.structure.identifierBiologie du fruit et pathologie [BFP]
hal.structure.identifierUniversity of the Basque Country = Euskal Herriko Unibertsitatea [UPV / EHU]
dc.contributor.authorPOUCET, Théo
hal.structure.identifierUniversity of the Basque Country = Euskal Herriko Unibertsitatea [UPV / EHU]
dc.contributor.authorGONZÁLEZ-MORO, María Begoña
hal.structure.identifierBiologie du fruit et pathologie [BFP]
dc.contributor.authorCABASSON, Cecile
hal.structure.identifierBiologie du fruit et pathologie [BFP]
dc.contributor.authorBEAUVOIT, Bertrand
hal.structure.identifierBiologie du fruit et pathologie [BFP]
dc.contributor.authorGIBON, Yves
hal.structure.identifierBiologie du fruit et pathologie [BFP]
dc.contributor.authorDIEUAIDE-NOUBHANI, Martine
hal.structure.identifierUniversity of the Basque Country = Euskal Herriko Unibertsitatea [UPV / EHU]
hal.structure.identifierIkerbasque - Basque Foundation for Science
dc.contributor.authorMARINO, Daniel
dc.date.issued2021
dc.identifier.issn0022-0957
dc.description.abstractEnNitrate (NO3−) and ammonium (NH4+) are the main inorganic nitrogen sources available to plants. However, exclusive ammonium nutrition may lead to stress characterized by growth inhibition, generally associated with a profound metabolic reprogramming. In this work, we investigated how metabolism adapts according to leaf position in the vertical axis of tomato (Solanum lycopersicum cv. M82) plants grown with NH4+, NO3−, or NH4NO3 supply. We dissected leaf biomass composition and metabolism through an integrative analysis of metabolites, ions, and enzyme activities. Under ammonium nutrition, carbon and nitrogen metabolism were more perturbed in mature leaves than in young ones, overall suggesting a trade-off between NH4+ accumulation and assimilation to preserve young leaves from ammonium stress. Moreover, NH4+-fed plants exhibited changes in carbon partitioning, accumulating sugars and starch at the expense of organic acids, compared with plants supplied with NO3−. We explain such reallocation by the action of the biochemical pH-stat as a mechanism to compensate the differential proton production that depends on the nitrogen source provided. This work also underlines that the regulation of leaf primary metabolism is dependent on both leaf phenological stage and the nitrogen source provided.
dc.description.sponsorshipCentre français de phénomique végétale - ANR-11-INBS-0012
dc.language.isoen
dc.publisherOxford University Press (OUP)
dc.subjectplante fruitière
dc.subject.enAmmonium
dc.subject.encarbon
dc.subject.enleaf development
dc.subject.enmetabolism
dc.subject.ennitrate
dc.subject.ennitrogen
dc.subject.enpH-stat
dc.subject.entomato
dc.title.enAmmonium supply induces differential metabolic adaptive responses in tomato according to leaf phenological stage
dc.typeArticle de revue
dc.identifier.doi10.1093/jxb/erab057
dc.subject.halSciences du Vivant [q-bio]
dc.subject.halSciences du Vivant [q-bio]/Biologie végétale
bordeaux.journalJournal of Experimental Botany
bordeaux.page3185-3199
bordeaux.volume72
bordeaux.issue8
bordeaux.peerReviewedoui
hal.identifierhal-03179910
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03179910v1
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