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Role of phospho enol pyruvate carboxylase in organic acid accumulation during peach fruit development

hal.structure.identifierUnité de recherches Espèces Fruitières et Vigne [UREFV]
dc.contributor.authorMOING, Annick
hal.structure.identifierBiologie du fruit et pathologie [BFP]
dc.contributor.authorROTHAN, Christophe
hal.structure.identifierUnité de recherches Espèces Fruitières et Vigne [UREFV]
dc.contributor.authorSVANELLA, Laurence
hal.structure.identifierStation de physiologie végétale
dc.contributor.authorJUST, Daniel
hal.structure.identifierBiologie du fruit et pathologie [BFP]
dc.contributor.authorDIAKOU, Paraskevi
hal.structure.identifierStation de physiologie végétale
dc.contributor.authorRAYMOND, Philippe
hal.structure.identifierUnité d'agronomie
dc.contributor.authorGAUDILLÈRE, Jean-Pierre
hal.structure.identifierBiologie du fruit et pathologie [BFP]
dc.contributor.authorMONET, René
dc.date.issued2000
dc.identifier.issn0031-9317
dc.description.abstractEnThe synthesis of organic acids was studied during fruit development of two peach (Prunus persica L, Batsch) cultivars, Fantasia and Jalousia, having fruits with high and low organic acid content, respectively. The malate content was higher in cv. Fantasia than in cv, Jalousia at the end of the first rapid growth stage (50 days after bloom [DAB]). Malate and citrate contents,were higher in Fantasia than in Jalousia during the second rapid growth stage (from 100 DAB to maturity). The expression of phosphoenolpyruvate carboxylase (PEPC, EC 4.1.1.31), which is involved in organic acid synthesis, was studied during peach fruit development. PEPC mRNA levels, and protein levels on a total soluble protein basis, peaked at 23 and 108 DAB in Fantasia. In Jalousia, they were very low at 23 DAB and reached levels similar to Fantasia at 108 DAB, For both cultivars, in vitro PEPC activity expressed on a dry weight basis was maximal at 24 DAB, decreased from 24 to 60 DAB, and then remained constant. The activity of peach fruit PEPC appeared extremely sensitive to malate (I-0.5 of 100 mu M for Fantasia and 65 mu M for Jalousia at pH 7.3) and low pH, PEPC may participate in the control of organic acid accumulation during fruit development in the normal-acid fruit of Fantasia, However, mechanisms other than organic acid synthesis might account for the differences in acidity between normal-acid and non-acid peach fruit.
dc.language.isoen
dc.publisherWiley
dc.subject.enREGULATORY PHOSPHORYLATION
dc.subject.enCARBON METABOLISM
dc.subject.enTOMATO FRUITS
dc.subject.enMALIC ENZYME
dc.subject.enIN-VIVO
dc.subject.enSORGHUM
dc.subject.enCITRATE
dc.subject.enPHOTOSYNTHESIS
dc.subject.enMITOCHONDRIAL
dc.subject.enPURIFICATION
dc.title.enRole of phospho enol pyruvate carboxylase in organic acid accumulation during peach fruit development
dc.typeArticle de revue
dc.identifier.doi10.1034/j.1399-3054.2000.108001001.x
dc.subject.halSciences du Vivant [q-bio]
bordeaux.journalPhysiologia Plantarum
bordeaux.page1-10
bordeaux.volume108
bordeaux.issue1
bordeaux.peerReviewedoui
hal.identifierhal-03348052
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03348052v1
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