Use este identificador para citar ou linkar para este item: http://www.alice.cnptia.embrapa.br/alice/handle/doc/1035414
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dc.contributor.authorOLIVEIRA, L. M. dept_BR
dc.contributor.authorGRESS, J.pt_BR
dc.contributor.authorDE, J.pt_BR
dc.contributor.authorRATHINASABAPATHI, B.pt_BR
dc.contributor.authorMARCHI, G.pt_BR
dc.contributor.authorCHEN, Y.pt_BR
dc.contributor.authorMA, L. Q.pt_BR
dc.date.accessioned2016-01-28T11:11:11Zpt_BR
dc.date.available2016-01-28T11:11:11Zpt_BR
dc.date.created2016-01-28pt_BR
dc.date.issued2016pt_BR
dc.identifier.citationChemosphere, Oxford, n. 147, p. 36-43, March 2016.pt_BR
dc.identifier.issn0045-6535pt_BR
dc.identifier.urihttp://www.alice.cnptia.embrapa.br/alice/handle/doc/1035414pt_BR
dc.descriptionAbstract: We investigated the effects of chromate (CrVI) and sulfate on their uptake and translocation in Ashyperaccumulator Pteris vittata. Plants were exposed to 1) 0.1 mM CrVI and 0, 0.25, 1.25 or 2.5 mM sulfate or 2) 0.25 mM sulfate and 0, 0.5, 2.5 or 5.0 mM CrVI for 1 d in hydroponics. P. vittata accumulated 26 and 1261 mg kg1 Cr in the fronds and roots at CrVI0.1, and 2197 and 1589 mg kg1 S in the fronds and roots at S0.25. Increasing sulfate concentrations increased Cr root concentrations by 16e66% and helped CrVI reduction to CrIII whereas increasing CrVI concentrations increased frond sulfate concentrations by 3e27%. Increasing sulfate concentrations enhanced TBARS concentrations in the biomass, indicating oxidative stress caused lipid peroxidation in plant cell membranes. However, addition of 0.25e2.5 mM sulfate alleviated CrVI's toxic effects and decreased TBARS from 23.5 to 9.46e12.3 mmol g1 FW. Though CrVI was supplied, 78e96% of CrIII was in the biomass, indicating efficient CrVI reduction to CrIII by P. vittata. The data indicated the amazing ability of P. vittata in Cr uptake at 289 mg kg1 h1 with little translocation to the fronds. These results indicated that P. vittata had potential in Cr phytoremediation in contaminated sites but further studies are needed to evaluate this potential. The facts that CrVI and sulfate helped each other in uptake by P. vittata suggest that CrVI was not competing with sulfate uptake in P. vittata. However, the mechanisms of how sulfate and CrVI enhance each other's accumulation in P. vittata need further investigation.pt_BR
dc.language.isoengeng
dc.rightsopenAccesseng
dc.subjectCaptaçãopt_BR
dc.subjectEspeciaçãopt_BR
dc.subjectSulfatept_BR
dc.titleSulfate and chromate increased each other's uptake and translocation in As-hyperaccumulator Pteris vittata.pt_BR
dc.typeArtigo de periódicopt_BR
dc.date.updated2016-01-28T11:11:11Zpt_BR
dc.subject.thesagroCromopt_BR
dc.subject.thesagroSulfatopt_BR
dc.subject.thesagroTranslocaçãopt_BR
dc.subject.nalthesaurusChromiumpt_BR
dc.subject.nalthesaurusPteris vittatapt_BR
dc.subject.nalthesaurusUptake mechanismspt_BR
dc.subject.nalthesaurusTranslocation (plant physiology)pt_BR
dc.subject.nalthesaurusChemical speciationpt_BR
riaa.ainfo.id1035414pt_BR
riaa.ainfo.lastupdate2016-01-28pt_BR
dc.identifier.doihttp://dx.doi.org/10.1016/j.chemosphere.2015.12.088pt_BR
dc.contributor.institutionLETÚZIA M. DE OLIVEIRA, NANJING UNIVERSITY, CHINA; JULIA GRESS, UNIVERSITY OF FLORIDA, USA; JAYSANKAR DE, UNIVERSITY OF FLORIDA, USA; BALA RATHINASABAPATHI, UNIVERSITY OF FLORIDA, USA; GIULIANO MARCHI, CPAC; YANSHAN CHEN, NANJING UNIVERSITY, CHINA; LENA Q. MA, NANJING UNIVERSITY, CHINA.pt_BR
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