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Longitudinal variation in cadmium influx in sunflower (<em>Helianthus annuus</em> L.) roots as depending on the growth substrate, root age and root order

hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorLAPORTE, Marie
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorDENAIX, Laurence
hal.structure.identifierTerres Inovia
dc.contributor.authorDAUGUET, Sylvie
hal.structure.identifierInteractions Sol Plante Atmosphère [UMR ISPA]
dc.contributor.authorNGUYEN, Christophe
dc.date.accessioned2024-04-08T12:02:40Z
dc.date.available2024-04-08T12:02:40Z
dc.date.issued2014
dc.identifier.issn0032-079X
dc.identifier.urihttps://oskar-bordeaux.fr/handle/20.500.12278/196219
dc.description.abstractEnIn a previous work, we observed a longitudinal decrease in Cd2+ influx starting from the root tip in first order lateral roots of sunflower (Helianthus annuus L.) grown in hydroponics. This variable influx was expected to impact the total Cd2+ uptake depending on the root system architecture and on how steep was the decrease of the influx. Here, we examined the influence of the culture substrate, of the age and order of lateral roots on the longitudinal variation of Cd2+ influx. By using short-term exposures to Cd-109-labelled solution (5 to 200 nM), we compared the longitudinal variations in Cd2+ roots influx depending on the growth substrate (hydroponics or sand), on the root age and order. In second order laterals, Cd2+ influx decreased from the apex to the root base, as for first order laterals. For sand cultures compared to hydroponics, the mean Cd2+ influx was lower and decreased more steeply with the distance from the apex. The influx also decreased with increasing root age and order, markedly in hydroponics but less for sand cultures. Results suggested that for a given root surface area, the Cd2+ uptake by a root system should increase with increasing number of root tips and decreasing individual root length.
dc.language.isoen
dc.publisherSpringer Verlag
dc.subjectInflux
dc.subject.enCadmium
dc.subject.enGrowth substrate
dc.subject.enLongitudinal variation
dc.subject.enRoot age and order
dc.subject.enSunflower
dc.title.enLongitudinal variation in cadmium influx in sunflower (<em>Helianthus annuus</em> L.) roots as depending on the growth substrate, root age and root order
dc.typeArticle de revue
dc.identifier.doi10.1007/s11104-014-2123-8
dc.subject.halSciences du Vivant [q-bio]/Sciences agricoles
dc.subject.halSciences du Vivant [q-bio]/Biologie végétale
bordeaux.journalPlant and Soil
bordeaux.page235-247
bordeaux.volume381
bordeaux.hal.laboratoriesInteractions Soil Plant Atmosphere (ISPA) - UMR 1391*
bordeaux.issue1-2
bordeaux.institutionBordeaux Sciences Agro
bordeaux.institutionINRAE
bordeaux.peerReviewedoui
hal.identifierhal-02634104
hal.version1
hal.popularnon
hal.audienceInternationale
hal.origin.linkhttps://hal.archives-ouvertes.fr//hal-02634104v1
bordeaux.COinSctx_ver=Z39.88-2004&amp;rft_val_fmt=info:ofi/fmt:kev:mtx:journal&amp;rft.jtitle=Plant%20and%20Soil&amp;rft.date=2014&amp;rft.volume=381&amp;rft.issue=1-2&amp;rft.spage=235-247&amp;rft.epage=235-247&amp;rft.eissn=0032-079X&amp;rft.issn=0032-079X&amp;rft.au=LAPORTE,%20Marie&amp;DENAIX,%20Laurence&amp;DAUGUET,%20Sylvie&amp;NGUYEN,%20Christophe&amp;rft.genre=article


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