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A Chimeric TGA Repressor Slows Down Fruit Maturation and Ripening in Tomato

hal.structure.identifierBiologie du fruit et pathologie [BFP]
dc.contributor.authorLEMAIRE-CHAMLEY, Martine
hal.structure.identifierInstitut de Recherche en Horticulture et Semences [IRHS]
dc.contributor.authorKOUTOUAN, Claude
hal.structure.identifierBiologie du fruit et pathologie [BFP]
dc.contributor.authorJORLY, Joana
hal.structure.identifierBiologie du fruit et pathologie [BFP]
dc.contributor.authorASSALI, Julien
hal.structure.identifierThe University of Tokyo [UTokyo]
hal.structure.identifierMax Planck Institute of Molecular Plant Physiology [MPI-MP]
dc.contributor.authorYOSHIDA, Takuya
hal.structure.identifierRoyal Holloway [University of London] [RHUL]
dc.contributor.authorNOGUEIRA, Marilise
hal.structure.identifierMax Planck Institute of Molecular Plant Physiology [MPI-MP]
dc.contributor.authorTOHGE, Takayuki
hal.structure.identifierBiologie du fruit et pathologie [BFP]
dc.contributor.authorFERRAND, Carine
hal.structure.identifierUniversidade de São Paulo = University of São Paulo [USP]
dc.contributor.authorPERES, Lázaro
hal.structure.identifierUniversité de Tsukuba = University of Tsukuba
hal.structure.identifierRyukoku University
dc.contributor.authorASAMIZU, Erika
hal.structure.identifierUniversité de Tsukuba = University of Tsukuba
dc.contributor.authorEZURA, Hiroshi
hal.structure.identifierRyukoku University
dc.contributor.authorFRASER, Paul
hal.structure.identifierLeibniz Institute of Plant Genetics and Crop Plant Research [Gatersleben] [IPK-Gatersleben]
dc.contributor.authorHAJIREZAEI, Mohammad-Reza
hal.structure.identifierMax Planck Institute of Molecular Plant Physiology [MPI-MP]
dc.contributor.authorFERNIE, Alisdair
hal.structure.identifierBiologie du fruit et pathologie [BFP]
dc.contributor.authorROTHAN, Christophe
dc.date.issued2022
dc.identifier.issn0032-0781
dc.description.abstractEnAbstract The bZIP transcription factor (TF) SlTGA2.2 was previously highlighted as a possible hub in a network regulating fruit growth and transition to ripening (maturation phase). It belongs to a clade of transcription factors well known for their involvement in the regulation of the salicylic acid (SA) – dependent systemic acquired resistance (SAR). To investigate if this TGA TF plays a role in tomato fruit growth and maturation, we took advantage of the fruit-specific SlPPC2 promoter (PPC2pro) to target the expression of a SlTGA2.2-SRDX chimeric repressor in a developmental window restricted to early fruit growth and maturation. Here, we show that this SlTGA2.2-SRDX repressor alters early fruit development and metabolism, including chloroplast number and structure, considerably extends the time necessary to reach the mature green stage and slows down fruit ripening. RNAseq and plant hormone analyses reveal that PPC2pro:SlTGA2.2-SRDX fruits are maintained in an immature stage as long as PPC2pro is active, through early modifications of plant hormonal signalling and down-regulation of MADS-RIN and NAC-NOR ripening regulators. Once PPC2pro becomes inactive and therefore SlTGA2.2-SRDX expression is reduced, ripening can proceed, albeit at a slower pace than normal. Altogether, this work emphasizes the developmental continuum between fruit growth, maturation and ripening and provides a useful tool to alter and study the molecular bases of tomato fruit transition to ripening.
dc.language.isoen
dc.publisherOxford University Press (OUP)
dc.subjectFruit
dc.subjectdéveloppement du fruit
dc.subject.enbZIP
dc.subject.enchloroplast
dc.subject.enhormone regulation
dc.subject.enripening competency
dc.subject.enSolanum lycopersicum
dc.subject.entomato
dc.title.enA Chimeric TGA Repressor Slows Down Fruit Maturation and Ripening in Tomato
dc.typeArticle de revue
dc.identifier.doi10.1093/pcp/pcab150
dc.subject.halSciences du Vivant [q-bio]
dc.subject.halSciences du Vivant [q-bio]/Biologie végétale
bordeaux.journalPlant and Cell Physiology
bordeaux.page120–134
bordeaux.volume63
bordeaux.issue1
bordeaux.peerReviewedoui
hal.identifierhal-03402429
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03402429v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Plant%20and%20Cell%20Physiology&rft.date=2022&rft.volume=63&rft.issue=1&rft.spage=120%E2%80%93134&rft.epage=120%E2%80%93134&rft.eissn=0032-0781&rft.issn=0032-0781&rft.au=LEMAIRE-CHAMLEY,%20Martine&KOUTOUAN,%20Claude&JORLY,%20Joana&ASSALI,%20Julien&YOSHIDA,%20Takuya&rft.genre=article


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