Afficher la notice abrégée

Arabidopsis hydathodes are sites of auxin accumulation and nutrient scavenging

dc.rights.licenseopenen_US
dc.contributor.authorROUTABOUL, Jean-Marc
dc.contributor.authorBELLENOT, Caroline
dc.contributor.authorOLYMPIO, Aurore
dc.contributor.authorCLÉMENT, Gilles
dc.contributor.authorCITERNE, Sylvie
dc.contributor.authorREMBLIÈRE, Céline
dc.contributor.authorCHARVIN, Magali
dc.contributor.authorFRANKE, Lars
dc.contributor.authorCHIARENZA, Serge
dc.contributor.authorVASSELON, Damien
dc.contributor.authorJARDINAUD, Marie-Françoise
hal.structure.identifierBordeaux Sciences Economiques [BSE]
dc.contributor.authorCARRÈRE, Sébastien
dc.contributor.authorNUSSAUME, Laurent
dc.contributor.authorLAUFS, Patrick
dc.contributor.authorLEONHARDT, Nathalie
dc.contributor.authorNAVARRO, Lionel
dc.contributor.authorSCHATTAT, Martin
dc.contributor.authorNOËL, Laurent
dc.date.accessioned2025-06-16T13:28:32Z
dc.date.available2025-06-16T13:28:32Z
dc.date.issued2024-09-10
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/206924
dc.description.abstractEnHydathodes are small organs found on the leaf margins of vascular plants which release excess xylem sap through a process called guttation. While previous studies have hinted at additional functions of hydathode in metabolite transport or auxin metabolism, experimental support is limited. We conducted comprehensive transcriptomic, metabolomic and physiological analyses of mature Arabidopsis hydathodes. This study identified 1460 genes differentially expressed in hydathodes compared to leaf blades, indicating higher expression of most genes associated with auxin metabolism, metabolite transport, stress response, DNA, RNA or microRNA processes, plant cell wall dynamics and wax metabolism. Notably, we observed differential expression of genes encoding auxin-related transcriptional regulators, biosynthetic processes, transport and vacuolar storage supported by the measured accumulation of free and conjugated auxin in hydathodes. We also showed that 78% of the total content of 52 xylem metabolites was removed from guttation fluid at hydathodes. We demonstrate that NRT2.1 and PHT1;4 transporters capture nitrate and inorganic phosphate in guttation fluid, respectively, thus limiting the loss of nutrients during this process. Our transcriptomic and metabolomic analyses unveil an organ with its specific physiological and biological identity.
dc.language.isoENen_US
dc.subject.enTranscriptome
dc.subject.enTransport
dc.subject.enArabidopsis
dc.subject.enAuxin
dc.subject.enHydathode
dc.subject.enMetabolome
dc.subject.enNitrate
dc.subject.enPhosphate
dc.title.enArabidopsis hydathodes are sites of auxin accumulation and nutrient scavenging
dc.typeArticle de revueen_US
dc.identifier.doi10.1111/tpj.17014en_US
dc.subject.halSciences de l'Homme et Société/Economies et financesen_US
bordeaux.journalThe Plant Journalen_US
bordeaux.page857-871en_US
bordeaux.volume120en_US
bordeaux.hal.laboratoriesBordeaux Sciences Economiques / Bordeaux School of Economics (BSE) - UMR 6060en_US
bordeaux.issue3en_US
bordeaux.institutionUniversité de Bordeauxen_US
bordeaux.institutionCNRSen_US
bordeaux.institutionINRAEen_US
bordeaux.peerReviewedouien_US
bordeaux.inpressnonen_US
hal.popularnonen_US
hal.audienceInternationaleen_US
hal.exportfalse
dc.rights.ccPas de Licence CCen_US
bordeaux.COinSctx_ver=Z39.88-2004&rft_val_fmt=info:ofi/fmt:kev:mtx:journal&rft.jtitle=The%20Plant%20Journal&rft.date=2024-09-10&rft.volume=120&rft.issue=3&rft.spage=857-871&rft.epage=857-871&rft.au=ROUTABOUL,%20Jean-Marc&BELLENOT,%20Caroline&OLYMPIO,%20Aurore&CL%C3%89MENT,%20Gilles&CITERNE,%20Sylvie&rft.genre=article


Fichier(s) constituant ce document

FichiersTailleFormatVue

Il n'y a pas de fichiers associés à ce document.

Ce document figure dans la(les) collection(s) suivante(s)

Afficher la notice abrégée