A glimpse into the symplastic and apoplastic Cd uptake by Massai grass modulated by sulfur nutrition: Plants well-nourished with S as a strategy for phytoextraction

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dc.contributor.authorSilveira Rabelo, Flavio Henrique
dc.contributor.authorJordao, Luiz Tadeu [UNESP]
dc.contributor.authorLavres, Jose
dc.contributor.institutionUniversidade de São Paulo (USP)
dc.contributor.institutionUniversidade Estadual Paulista (Unesp)
dc.date.accessioned2018-11-26T15:46:01Z
dc.date.available2018-11-26T15:46:01Z
dc.date.issued2017-12-01
dc.description.abstractTo date, there have been no studies demonstrating the influence of sulfur (S) on the cadmium (Cd) uptake kinetics, which limits the understanding of mechanisms involved in the uptake of this element. Therefore, this study was carried out in order to quantify the contribution of symplastic and apoplastic uptakes of Cd (0.1 and 0.5 mmol L-1) by Massai grass (Panicum maximum cv. Massai) grown under low and adequate S-supply (0.1 and 1.9 mmol L-1) by measuring Cd concentration in the nutrient solution (Vm(ax), K-m, and C-min) along the plant's exposure time (108 h) and determining Cd concentration in root symplast and apoplast. The V-max, of Cd influx in Massai grass exposed to higher Cd and S concentrations was 38% higher than that plants supplied with lower S concentration. The K-m and C-min of plants exposed to the highest Cd concentration was higher than that plants subjected to the lowest Cd concentration, although values were not affected by S supply. Symplastic influx of Cd in plants subjected to the lower Cd and S concentrations was 20% higher as compared to plants supplied with the higher concentration of S, whereas the apoplastic influx of Cd was higher when there was a higher supply S, regardless of Cd concentration in the solution. This result indicates that an adequate supply of S decreases the contribution of the symplastic Cd uptake and increases the contribution of the apoplastic Cd uptake when the toxicity caused by Cd is lower.en
dc.description.affiliationUniv Sao Paulo, Ctr Nucl Energy Agr, BR-13416000 Piracicaba, Brazil
dc.description.affiliationSao Paulo State Univ, Fac Agr Sci, BR-18610307 Botucatu, SP, Brazil
dc.description.affiliationUnespSao Paulo State Univ, Fac Agr Sci, BR-18610307 Botucatu, SP, Brazil
dc.description.sponsorshipCoordenação de Aperfeiçoamento de Pessoal de Nível Superior (CAPES)
dc.description.sponsorshipFundação de Amparo à Pesquisa do Estado de São Paulo (FAPESP)
dc.description.sponsorshipIdCAPES: 1332394
dc.description.sponsorshipIdFAPESP: 2014/16731-7
dc.description.sponsorshipIdFAPESP: 2014/18735-0
dc.description.sponsorshipIdFAPESP: 2015/21562-2
dc.format.extent48-57
dc.identifierhttp://dx.doi.org/10.1016/j.plaphy.2017.10.018
dc.identifier.citationPlant Physiology And Biochemistry. Paris: Elsevier France-editions Scientifiques Medicales Elsevier, v. 121, p. 48-57, 2017.
dc.identifier.doi10.1016/j.plaphy.2017.10.018
dc.identifier.fileWOS000418968700006.pdf
dc.identifier.issn0981-9428
dc.identifier.urihttp://hdl.handle.net/11449/159988
dc.identifier.wosWOS:000418968700006
dc.language.isoeng
dc.publisherElsevier B.V.
dc.relation.ispartofPlant Physiology And Biochemistry
dc.relation.ispartofsjr1,125
dc.rights.accessRightsAcesso aberto
dc.sourceWeb of Science
dc.subjectCadmium
dc.subjectKinetics
dc.subjectK-m
dc.subjectPanicum maximum
dc.subjectSulfur
dc.titleA glimpse into the symplastic and apoplastic Cd uptake by Massai grass modulated by sulfur nutrition: Plants well-nourished with S as a strategy for phytoextractionen
dc.typeArtigo
dcterms.licensehttp://www.elsevier.com/about/open-access/open-access-policies/article-posting-policy
dcterms.rightsHolderElsevier B.V.
unesp.author.orcid0000-0002-8804-7182[1]

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