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The Auxin Sl-IAA17 Transcriptional Repressor Controls Fruit Size Via the Regulation of Endoreduplication-Related Cell Expansion.

hal.structure.identifierGénomique et Biotechnologie des Fruits [GBF]
dc.contributor.authorSU, Liyan
hal.structure.identifierGénomique et Biotechnologie des Fruits [GBF]
dc.contributor.authorBASSA, Carole
hal.structure.identifierGénomique et Biotechnologie des Fruits [GBF]
dc.contributor.authorAUDRAN, Corinne
hal.structure.identifierGénomique et Biotechnologie des Fruits [GBF]
hal.structure.identifierBiologie du fruit et pathologie [BFP]
dc.contributor.authorMILA, Isabelle
hal.structure.identifierBiologie du fruit et pathologie [BFP]
dc.contributor.authorCHENICLET, Catherine
hal.structure.identifierBiologie du fruit et pathologie [BFP]
dc.contributor.authorCHEVALIER, Christian
hal.structure.identifierGénomique et Biotechnologie des Fruits [GBF]
dc.contributor.authorBOUZAYEN, Mondher
hal.structure.identifierGénomique et Biotechnologie des Fruits [GBF]
dc.contributor.authorROUSTAN, Jean-Paul
hal.structure.identifierGénomique et Biotechnologie des Fruits [GBF]
dc.contributor.authorCHERVIN, Christian
dc.date.issued2014-11
dc.identifier.issn0032-0781
dc.description.abstractEnAuxin is known to regulate cell division and cell elongation, thus controlling plant growth and development. Part of the auxin signaling pathway depends on the fine-tuned degradation of the auxin/indole acetic acid (Aux/IAA) transcriptional repressors. Recent evidence indicates that Aux/IAA proteins play a role in fruit development in tomato (Solanum lycopersicum Mill.), a model species for fleshy fruit development. We report here on the functional characterization of Sl-IAA17 during tomato fruit development. Silencing of Sl-IAA17 by an RNA interference (RNAi) strategy resulted in the production of larger fruit than the wild type. Histological analyses of the fruit organ and tissues demonstrated that this phenotype was associated with a thicker pericarp, rather than larger locules and/or a larger number of seeds. Microscopic analysis demonstrated that the higher pericarp thickness in Sl-IAA17 RNAi fruits was not due to a larger number of cells, but to the increase in cell size. Finally, we observed that the cell expansion in the transgenic fruits is tightly coupled with higher ploidy levels than in the wild type, suggesting a stimulation of the endoreduplication process. In conclusion, this work provides new insights into the function of the Aux/IAA pathway in fleshy fruit development, especially fruit size and cell size determination in tomato. Su L1, Bassa C1, Audran C1, Mila I1, Cheniclet C2, Chevalier C2, Bouzayen M1, Roustan JP1, Chervin C3.
dc.description.sponsorshipUniversité Fédérale de Toulouse - ANR-11-IDEX-0002
dc.language.isoen
dc.publisherOxford University Press (OUP)
dc.subject.enAuxin
dc.subject.enFruit size
dc.subject.enEndoreduplication
dc.title.enThe Auxin Sl-IAA17 Transcriptional Repressor Controls Fruit Size Via the Regulation of Endoreduplication-Related Cell Expansion.
dc.typeArticle de revue
dc.identifier.doi10.1093/pcp/pcu124
dc.subject.halSciences du Vivant [q-bio]/Biochimie, Biologie Moléculaire/Génomique, Transcriptomique et Protéomique [q-bio.GN]
dc.subject.halSciences du Vivant [q-bio]/Génétique/Génétique des plantes
bordeaux.journalPlant and Cell Physiology
bordeaux.pagepp. 1969-1976
bordeaux.volumevol. 26
bordeaux.issuen° 11
bordeaux.peerReviewedoui
hal.identifierhal-01335934
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-01335934v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Plant%20and%20Cell%20Physiology&rft.date=2014-11&rft.volume=vol.%2026&rft.issue=n%C2%B0%2011&rft.spage=pp.%201969-1976&rft.epage=pp.%201969-1976&rft.eissn=0032-0781&rft.issn=0032-0781&rft.au=SU,%20Liyan&BASSA,%20Carole&AUDRAN,%20Corinne&MILA,%20Isabelle&CHENICLET,%20Catherine&rft.genre=article


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