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A diminution in ascorbate oxidase activity affects carbon allocation and improves yield in tomato under water deficit

hal.structure.identifierGénétique et Amélioration des Fruits et Légumes [GAFL]
dc.contributor.authorGARCHERY, Cécile
hal.structure.identifierGénétique et Amélioration des Fruits et Légumes [GAFL]
dc.contributor.authorGEST, Noé
hal.structure.identifierFaculty of Biology
dc.contributor.authorDO, Phuc Thi
dc.contributor.authorALHAGDOW, Moftah
hal.structure.identifierBiologie du fruit et pathologie [BFP]
dc.contributor.authorBALDET, Pierre
hal.structure.identifierInstitut des Nanosciences de Paris [INSP]
dc.contributor.authorMENARD, Guillaume
hal.structure.identifierBiologie du fruit et pathologie [BFP]
dc.contributor.authorROTHAN, Christophe
hal.structure.identifierLaboratoire d'Informatique, Signaux, et Systèmes de Sophia-Antipolis (I3S) / Equipe BIOINFO
dc.contributor.authorMASSOT, Capucine
hal.structure.identifierUnité de recherche Plantes et Systèmes de Culture Horticoles [PSH]
dc.contributor.authorGAUTIER, Hélène
hal.structure.identifierEA 4279 Laboratoire Physiologie des Fruits et Légumes
dc.contributor.authorAARROUF, Jawad
dc.contributor.authorFERNIE, Alisdair R.
hal.structure.identifierGénétique et Amélioration des Fruits et Légumes [GAFL]
dc.contributor.authorSTEVENS, Rebecca
dc.date.issued2013
dc.identifier.issn0140-7791
dc.description.abstractEnThe regulation of carbon allocation between photosyn-thetic source leaves and sink tissues in response to stress is an important factor controlling plant yield. Ascorbate oxidase is an apoplastic enzyme, which controls the redox state of the apoplastic ascorbate pool. RNA interference was used to decrease ascorbate oxidase activity in tomato (Solanum lycopersicum L.). Fruit yield was increased in these lines under three conditions where assimilate became limiting for wild-type plants: when fruit trusses were left unpruned, when leaves were removed or when water supply was limited. Several alterations in the transgenic lines could contribute to the improved yield and favour transport of assimilate from leaves to fruits in the ascorbate oxidase lines. Ascorbate oxidase plants showed increases in sto-matal conductance and leaf and fruit sugar content, as well as an altered apoplastic hexose : sucrose ratio. Modifications in gene expression, enzyme activity and the fruit metabolome were coherent with the notion of the ascorbate oxidase RNAi lines showing altered sink strength. Ascor-bate oxidase may therefore be a target for strategies aimed at improving water productivity in crop species.
dc.language.isoen
dc.publisherWiley
dc.subject.enKey-words: Solanum lycopersicum
dc.subject.enapoplast
dc.subject.enredox
dc.subject.enRNAi
dc.subject.ensource–sink
dc.subject.enoxidative stress
dc.subject.endrought
dc.subject.engrowth
dc.subject.enKey-words: Solanum lycopersicum
dc.title.enA diminution in ascorbate oxidase activity affects carbon allocation and improves yield in tomato under water deficit
dc.typeArticle de revue
dc.identifier.doi10.1111/j.1365-3040.2012.02564.x
dc.subject.halSciences du Vivant [q-bio]
dc.subject.halSciences du Vivant [q-bio]/Biologie végétale
bordeaux.journalPlant, Cell and Environment
bordeaux.page159–175
bordeaux.volume36
bordeaux.issue1
bordeaux.peerReviewedoui
hal.identifierhal-01332344
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01332344v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Plant,%20Cell%20and%20Environment&rft.date=2013&rft.volume=36&rft.issue=1&rft.spage=159%E2%80%93175&rft.epage=159%E2%80%93175&rft.eissn=0140-7791&rft.issn=0140-7791&rft.au=GARCHERY,%20C%C3%A9cile&GEST,%20No%C3%A9&DO,%20Phuc%20Thi&ALHAGDOW,%20Moftah&BALDET,%20Pierre&rft.genre=article


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