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From fruit growth to ripening in plantain: a careful balance between carbohydrate synthesis and breakdown

hal.structure.identifierCatholic University of Leuven = Katholieke Universiteit Leuven [KU Leuven]
dc.contributor.authorCAMPOS, N.A.
hal.structure.identifierBiologie du fruit et pathologie [BFP]
dc.contributor.authorCOLOMBIE, Sophie
hal.structure.identifierBiologie du fruit et pathologie [BFP]
dc.contributor.authorMOING, Annick
hal.structure.identifierBiologie du fruit et pathologie [BFP]
dc.contributor.authorCASSAN, Cédric
hal.structure.identifierInternational Institute of Tropical Agriculture [Nigeria] [IITA]
dc.contributor.authorAMAH, D.
hal.structure.identifierCatholic University of Leuven = Katholieke Universiteit Leuven [KU Leuven]
hal.structure.identifierInternational Institute of Tropical Agriculture [IITA-Tanzania]
dc.contributor.authorSWENNEN, R.
hal.structure.identifierBiologie du fruit et pathologie [BFP]
dc.contributor.authorGIBON, Yves
hal.structure.identifierCatholic University of Leuven = Katholieke Universiteit Leuven [KU Leuven]
hal.structure.identifierBioversity International [Belgique]
dc.contributor.authorCARPENTIER, S.C.
hal.structure.identifierCatholic University of Leuven = Katholieke Universiteit Leuven [KU Leuven]
dc.contributor.authorCARPENTIER, Sebastien
dc.date.created2021-12-06
dc.date.issued2021-12-06
dc.description.abstractEnWe investigated the fruit development in two plantain banana cultivars from two weeks after bunch emergence till twelve weeks through high-throughput proteomics, major metabolite quantification and metabolic flux analyses. We give for the first time an insight at early stages of starch synthesis and breakdown. Starch and sugar synthesis and breakdown are processes that take place simultaneously. During the first eight to ten weeks the balance between synthesis and breakdown is clearly in favour of sugar breakdown and a net starch synthesis occurs. During this period, plantain fruit accumulates up to 48% of starch. The initiation of the ripening process is accompanied with a shift in balance towards net starch breakdown. The key enzymes related to this are phosphoglucan water dikinase (PWD), phosphoglucan phosphatase, α-1,6-glucosidase starch debranching enzyme (DBE), alpha glucan phosphorylase (PHS) and 4-alpha glucanotransferase disproportioning enzyme (DPE). The highest correlations with sucrose have been observed for PHS and DPE. There is also a significant correlation between the enzymes involved in ethylene biosynthesis, starch breakdown, pulp softening and ascorbate biosynthesis. The faster ending of maturation and starting of ripening in the Agbagba cultivar are linked to the key enzymes 1-aminocyclopropane-1-carboxylate oxidase and DPE. This knowledge of the mechanisms that regulate starch and sugar metabolisms during maturation and ripening is fundamental to determine the harvest moment, reduce postharvest losses and improve final product quality of breeding programs.
dc.description.sponsorshipCentre français de phénomique végétale - ANR-11-INBS-0012
dc.language.isoen
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/
dc.subjectplante fruitière
dc.subjectFruit
dc.subjectDéveloppement du fruit
dc.subjectMaturation
dc.subjectMétabolisme
dc.subjectflux métaboliques
dc.subjectmétabolite
dc.subjectsucres
dc.subjectamidon
dc.title.enFrom fruit growth to ripening in plantain: a careful balance between carbohydrate synthesis and breakdown
dc.typeDocument de travail - Pré-publication
dc.identifier.doi10.1101/2021.12.03.471126
dc.subject.halSciences du Vivant [q-bio]
dc.subject.halSciences du Vivant [q-bio]/Biologie végétale
hal.identifierhal-03659204
hal.version1
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03659204v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.date=2021-12-06&rft.au=CAMPOS,%20N.A.&COLOMBIE,%20Sophie&MOING,%20Annick&CASSAN,%20C%C3%A9dric&AMAH,%20D.&rft.genre=preprint


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