Impact of crop load on nitrogen uptake and reserve mobilisation in Vitis vinifera
| dc.rights.license | open | en_US |
| dc.contributor.author | VERDENAL, Thibaut | |
| dc.contributor.author | SPANGENBERG, Jorge | |
| hal.structure.identifier | Ecophysiologie et Génomique Fonctionnelle de la Vigne [UMR EGFV] | |
| dc.contributor.author | ZUFFEREY, Vivian | |
| dc.contributor.author | DIENES-NAGY, Ágnes | |
| dc.contributor.author | VIRET, Olivier | |
| hal.structure.identifier | Ecophysiologie et Génomique Fonctionnelle de la Vigne [UMR EGFV] | |
| dc.contributor.author | VAN LEEUWEN, Cornelis
ORCID: 0000-0002-9428-0167 IDREF: 200518208 | |
| dc.contributor.author | SPRING, Jean-Laurent | |
| dc.date.accessioned | 2020-09-11T12:48:54Z | |
| dc.date.available | 2020-09-11T12:48:54Z | |
| dc.date.issued | 2020 | |
| dc.identifier.issn | 1445-4408 | en_US |
| dc.identifier.uri | https://oskar-bordeaux.fr/handle/20.500.12278/11303 | |
| dc.description.abstractEn | Nitrogen deficit affects both crop production and composition, particularly in crops requiring an optimal fruit N content for aroma development. The adaptation of cultural practices to improve N use efficiency (NUE) (i.e. N uptake, assimilation and partitioning) is a priority for the sustainable production of high-quality crops. A trial was set on potted grapevines (Vitis vinifera L. cv. Chasselas) to investigate the potential of crop limitation (via bunch thinning) to control plant NUE and ultimately fruit N composition at harvest. A large crop load gradient was imposed by bunch thinning (0.5-2.5 kg m(-2)) and N traceability in the plant was realised with an isotope-labelling method (10 atom % N-15 foliar urea). The results indicate that the mobilisation of root reserves plays a major role in the balance of fruit N content. Fertiliser N uptake and assimilation appeared to be strongly stimulated by high-yielding conditions. Fertilisation largely contributed to fulfilling the high fruit N demand while limiting the mobilisation of root reserves under high yield conditions. Plants were able to modulate root N reserve mobilisation and fertiliser N uptake in function of the crop load, thus maintaining a uniform N concentration in fruits. However, the fruit free amino N profile was modified, which potentially altered the fruit aromas. These findings highlight the great capacity of plants to adapt their N metabolism to constraints, crop thinning in this case. This confirms the possibility of monitoring NUE by adapting cultural practices. | |
| dc.language.iso | EN | en_US |
| dc.rights.uri | http://creativecommons.org/licenses/by-sa/ | |
| dc.subject.en | Crop thinning | |
| dc.subject.en | Foliar urea | |
| dc.subject.en | Grapevine | |
| dc.subject.en | Isotope labelling | |
| dc.subject.en | N partitioning | |
| dc.subject.en | Reserve mobilisation | |
| dc.title.en | Impact of crop load on nitrogen uptake and reserve mobilisation in Vitis vinifera | |
| dc.type | Article de revue | en_US |
| dc.identifier.doi | 10.1071/FP20010 | en_US |
| dc.subject.hal | Sciences de l'environnement | en_US |
| dc.subject.hal | Sciences du Vivant [q-bio] | en_US |
| dc.subject.hal | Sciences du Vivant [q-bio]/Biologie végétale | en_US |
| bordeaux.journal | Functional Plant Biology | en_US |
| bordeaux.page | 744-756 | en_US |
| bordeaux.volume | 47 | en_US |
| bordeaux.hal.laboratories | Ecophysiologie et Génomique Fonctionnelle de la Vigne (EGFV) - UMR 1287 | en_US |
| bordeaux.issue | 8 | en_US |
| bordeaux.institution | Bordeaux Sciences Agro | en_US |
| bordeaux.institution | Université de Bordeaux | en_US |
| bordeaux.peerReviewed | oui | en_US |
| bordeaux.inpress | non | en_US |
| bordeaux.import.source | hal | |
| hal.identifier | hal-02904483 | |
| hal.version | 1 | |
| hal.export | false | |
| workflow.import.source | hal | |
| bordeaux.COinS | ctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Functional%20Plant%20Biology&rft.date=2020&rft.volume=47&rft.issue=8&rft.spage=744-756&rft.epage=744-756&rft.eissn=1445-4408&rft.issn=1445-4408&rft.au=VERDENAL,%20Thibaut&SPANGENBERG,%20Jorge&ZUFFEREY,%20Vivian&DIENES-NAGY,%20%C3%81gnes&VIRET,%20Olivier&rft.genre=article |
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