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Recently absorbed nitrogen incorporates into new and old tissues: evidence from a 15 N-labelling experiment in deciduous oaks

hal.structure.identifierBayero University Kano [BUK]
hal.structure.identifierEcologie Systématique et Evolution [ESE]
dc.contributor.authorMAHMUD, Mubarak
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
hal.structure.identifierEcologie Systématique et Evolution [ESE]
dc.contributor.authorMAXWELL, Tania
hal.structure.identifierEcologie Systématique et Evolution [ESE]
dc.contributor.authorCUEFF, Sixtine
hal.structure.identifierEcologie Systématique et Evolution [ESE]
dc.contributor.authorSCHROEDER, Romain
hal.structure.identifierEcologie Systématique et Evolution [ESE]
dc.contributor.authorBAZOT, Stéphane
hal.structure.identifierEcologie Systématique et Evolution [ESE]
hal.structure.identifierInstitut universitaire de France [IUF]
dc.contributor.authorDELPIERRE, Nicolas
hal.structure.identifierInstitut Jean-Pierre Bourgin [IJPB]
dc.contributor.authorMARMAGNE, Anne
hal.structure.identifierEcologie Systématique et Evolution [ESE]
dc.contributor.authorVINCENT, Gaëlle
hal.structure.identifierEcologie Systématique et Evolution [ESE]
dc.contributor.authorBARTHES, Laure
dc.date.accessioned2024-04-08T11:46:52Z
dc.date.available2024-04-08T11:46:52Z
dc.date.issued2022
dc.identifier.issn0032-079X
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/195253
dc.description.abstractEnWe quantified the distribution of nitrogen (N), dry-matter (biomass) and of soil-applied (15) N in tree and soil compartments in five naturally-growing 20-year-old oak trees. After applying (15) N solution to soil at the base of the trees in spring, all the trees were felled in the fall, their root system excavated, biomass, nitrogen and (15) N content measured in all compartments. Xylem rings-compartment contains most biomass (47%) while branches and coarse-root contains most nitrogen (29% and 14% respectively). The labelled (15) N absorbed throughout the vegetation season, was found in all compartments except the heartwood. The majority of recovered (15) N was in the leaves (24%). Some often overlooked compartments (coarse root, stump, xylem and other branches) together recovered 45% of the (15) N. (15) N was found in all the sapwood rings, from the ring formed in the current year up to 10 year-old rings, marking the limit of the heartwood. More (15) N was found in the younger rings compared to older rings. The (15) N allocated to ancient rings can originate from different, non-mutually exclusive, sources: whether directly from the soil via the (15) N uptake throughout the vegetation season and transport in the xylem sap, from the autumnal resorption of (15) N first allocated to the leaves, or from the (15) N mobility once allocated to the forming ring to older rings through ray parenchyma. With about 6% of the initial (15) N retrieved in the microbial biomass at the end of the growing season, we confirmed the role of microbial biomass as forest nitrogen sink.
dc.description.sponsorshipCLAND : Changement climatique et usage des terres - ANR-16-CONV-0003
dc.language.isoen
dc.publisherSpringer Verlag
dc.subject.enNitrogen uptake
dc.subject.enBiomass partitioning
dc.subject.enNitrogen allocation
dc.subject.enTree rings
dc.subject.enBroadleaf tree
dc.subject.en(15) N labeling
dc.title.enRecently absorbed nitrogen incorporates into new and old tissues: evidence from a 15 N-labelling experiment in deciduous oaks
dc.typeArticle de revue
dc.identifier.doi10.1007/s11104-022-05589-w
dc.subject.halSciences de l'environnement
bordeaux.journalPlant and Soil
bordeaux.hal.laboratoriesInteractions Soil Plant Atmosphere (ISPA) - UMR 1391*
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-03732171
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-03732171v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Plant%20and%20Soil&rft.date=2022&rft.eissn=0032-079X&rft.issn=0032-079X&rft.au=MAHMUD,%20Mubarak&MAXWELL,%20Tania&CUEFF,%20Sixtine&SCHROEDER,%20Romain&BAZOT,%20St%C3%A9phane&rft.genre=article


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