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Remobilization of seed phosphorus reserves and their role in attaining phosphorus autotrophy in maize (Zea mays L.) seedlings

hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
hal.structure.identifierDepartment of Environmental Sciences
dc.contributor.authorNADEEM, Muhammad
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorMOLLIER, Alain
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorMOREL, Christian
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorPRUD'HOMME, Loïc
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorVIVES, Alain
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorPELLERIN, Sylvain
dc.date.accessioned2024-04-08T12:03:14Z
dc.date.available2024-04-08T12:03:14Z
dc.date.issued2014
dc.identifier.issn0960-2585
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/196254
dc.description.abstractEnSuccessful remobilization of seed reserves is the driving force behind seedling establishment for maximum final crop outcomes. The remobilization of stored maize seed phosphorus (P), and its allocation towards growing seedlings is critical for P-autotrophy during early ontogeny. We aimed to (1) evaluate the time frame of the origin of P utilized by maize seedlings, including the heterotrophic, transitional and autotrophic phases; and (2) compare P and carbon (C) dynamics in both seed and seedling compartments during the same phases. Using isotopic signatures (32P), we identified different P fluxes (P-heterotrophy, P-transition and P-autotrophy) and determined the proportion of P fluxes from heterotrophic seed P and external P uptake during 23 d of early ontogeny. The P-heterotrophic growth phase lasted from the first to the fourth day after sowing, when seedlings were entirely made up of heterotrophic P originating from remobilized seed P pool. In our experimental conditions, the P-transitional phase, when growing seedlings were supported by both heterotrophic and autotrophic P, lasted from the fifth to the fifteenth day after sowing. Thereafter, seed P reserves were exhausted and seedlings depended entirely on external P uptake, indicating the P-autotrophic stage. Although seed P reserves were remobilized earlier than C reserves, the length of the three growth phases for P and C was similar in the maize seedlings.
dc.language.isoen
dc.publisherCambridge University Press (CUP)
dc.subjectmineral nutrition
dc.subject.enautotrophy
dc.subject.encarbon
dc.subject.enheterotrophy
dc.subject.enmaize
dc.subject.enphosphorus
dc.title.enRemobilization of seed phosphorus reserves and their role in attaining phosphorus autotrophy in maize (Zea mays L.) seedlings
dc.typeArticle de revue
dc.identifier.doi10.1017/S0960258514000105
dc.subject.halSciences du Vivant [q-bio]/Sciences agricoles
dc.subject.halSciences du Vivant [q-bio]/Biologie végétale
bordeaux.journalSeed Science Research
bordeaux.page187-194
bordeaux.volume24
bordeaux.hal.laboratoriesInteractions Soil Plant Atmosphere (ISPA) - UMR 1391*
bordeaux.issue03
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-02631553
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02631553v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Seed%20Science%20Research&rft.date=2014&rft.volume=24&rft.issue=03&rft.spage=187-194&rft.epage=187-194&rft.eissn=0960-2585&rft.issn=0960-2585&rft.au=NADEEM,%20Muhammad&MOLLIER,%20Alain&MOREL,%20Christian&PRUD'HOMME,%20Lo%C3%AFc&VIVES,%20Alain&rft.genre=article


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