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Sucrose transport inside the phloem: Bridging hydrodynamics and geometric characteristics

hal.structure.identifierDuke University [Durham]
dc.contributor.authorNAKAD, Mazen
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
hal.structure.identifierDuke University [Durham]
dc.contributor.authorDOMEC, Jean-Christophe
hal.structure.identifierLos Alamos National Laboratory [LANL]
dc.contributor.authorSEVANTO, Sanna
hal.structure.identifierDuke University [Durham]
dc.contributor.authorKATUL, Gabriel
dc.date.accessioned2024-04-08T11:40:47Z
dc.date.available2024-04-08T11:40:47Z
dc.date.issued2023-06-01
dc.identifier.issn1070-6631
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/195052
dc.description.abstractEnIn plants, the delivery of the products of photosynthesis is achieved through a hydraulic system labeled as phloem. This semi-permeable plant tissue consists of living cells that contract and expand in response to fluid pressure and flow velocity fluctuations. The Munch pressure flow theory, which is based on osmosis providing the necessary pressure gradient to drive the mass flow of carbohydrates, is currently the most accepted model for such sucrose transport. When this hypothesis is combined with the conservation of fluid mass and momentum as well as sucrose mass, many simplifications must be invoked to mathematically close the problem and to resolve the flow. This study revisits such osmotically driven flows by developing a new two-dimensional numerical model in cylindrical coordinates for an elastic membrane and a concentration-dependent viscosity. It is demonstrated that the interaction between the hydrodynamic and externally supplied geometrical characteristic of the phloem has a significant effect on the front speed of sucrose transport. These results offer a novel perspective about the evolutionary adaptation of plant hydraulic traits to optimize phloem soluble compounds transport efficiency.
dc.language.isoen
dc.publisherAmerican Institute of Physics
dc.title.enSucrose transport inside the phloem: Bridging hydrodynamics and geometric characteristics
dc.typeArticle de revue
dc.identifier.doi10.1063/5.0151644
dc.subject.halSciences de l'environnement
bordeaux.journalPhysics of Fluids
bordeaux.volume35
bordeaux.hal.laboratoriesInteractions Soil Plant Atmosphere (ISPA) - UMR 1391*
bordeaux.issue6
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-04288857
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-04288857v1
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=Physics%20of%20Fluids&rft.date=2023-06-01&rft.volume=35&rft.issue=6&rft.eissn=1070-6631&rft.issn=1070-6631&rft.au=NAKAD,%20Mazen&DOMEC,%20Jean-Christophe&SEVANTO,%20Sanna&KATUL,%20Gabriel&rft.genre=article


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