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Differences in Al tolerance between Plantago algarbiensis and P. almogravensis reflect their ability to respond to oxidative stress

2013Journal article Restricted access
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dc.contributor.authorMartins, Neusa
dc.contributor.authorOsório, Maria Leonor
dc.contributor.authorGonçalves, Sandra
dc.contributor.authorOsório, Júlio
dc.contributor.authorRomano, Anabela
dc.date.accessioned2015-06-18T10:12:38Z
dc.date.available2015-06-18T10:12:38Z
dc.date.issued2013
dc.description.abstractWe evaluated the impact of low pH and aluminum (Al) on the leaves and roots of Plantago almogravensis Franco and Plantago algarbiensis Samp., focusing on energy partitioning in photosystem II, H2O2 levels, lipid peroxidation, electrolyte leakage (EL), protein oxidation, total soluble protein content and antioxidant enzyme activities. In both species, Al triggered more changes in oxidative metabolism than low pH alone, particularly in the roots. We found that Al increased the levels of H2O2 in P. algarbiensis roots, but reduced the levels of H2O2 in P. almogravensis leaves and roots. Neither low pH nor Al affected the spatial heterogeneity of chlorophyll fluorescence, the maximum photochemical efficiency of PSII (F-v/F-m), the actual quantum efficiency of PSII (I center dot(PSII)) or the quantum yields of regulated (I center dot(NPQ)) and nonregulated (I center dot(NO)) energy dissipation, and there was no significant change in total soluble protein content and EL. In P. algarbiensis, Al increased the carbonyl content and the activities of superoxide dismutase (SOD) and catalase (CAT) in the roots, and also CAT, ascorbate peroxidase and guaiacol peroxidase activities in the leaves. In P. almogravensis, Al reduced the level of malondialdehyde in the roots as well as SOD activity in the leaves and roots. We found that P. almogravensis plantlets could manage the oxidative stress caused by low pH and Al, whereas the P. algarbiensis antioxidant system was unable to suppress Al toxicity completely, leading to the accumulation of H2O2 and consequential protein oxidation in the roots.
dc.identifier.doihttps://dx.doi.org/10.1007/s10534-013-9625-3
dc.identifier.issn0966-0844
dc.identifier.otherAUT: JOS01477; ARO01015
dc.identifier.urihttp://hdl.handle.net/10400.1/6438
dc.language.isoeng
dc.peerreviewedyes
dc.publisherSpringer Verlag
dc.relation.isbasedonP-005-039
dc.subjectAntioxidant enzymes
dc.subjectEnergy partitioning
dc.subjectLipid peroxidation
dc.subjectOxidative stress
dc.subjectProtein oxidation
dc.subjectReactive oxygen species
dc.titleDifferences in Al tolerance between Plantago algarbiensis and P. almogravensis reflect their ability to respond to oxidative stress
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage437
oaire.citation.startPage427
oaire.citation.titleBioMetals
oaire.citation.volume26
person.familyNameOsório
person.familyNameGonçalves
person.familyNameOsório
person.familyNameRomano
person.givenNameMaria Leonor
person.givenNameSandra
person.givenNameJúlio
person.givenNameAnabela
person.identifier.ciencia-id1D1A-4459-86D8
person.identifier.ciencia-id9F19-E3AE-2C59
person.identifier.ciencia-id8A18-7E9A-3B0E
person.identifier.orcid0000-0003-4333-2905
person.identifier.orcid0000-0002-7713-6497
person.identifier.orcid0000-0002-3038-4434
person.identifier.orcid0000-0002-4054-4091
person.identifier.orcid0000-0002-7204-7428
person.identifier.ridM-6988-2017
person.identifier.scopus-author-id7006394339
person.identifier.scopus-author-id8583003200
person.identifier.scopus-author-id9938818600
person.identifier.scopus-author-id56249997600
rcaap.rightsrestrictedAccess
rcaap.typearticle
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relation.isAuthorOfPublication796eec66-f451-4ebf-938a-866b703df3ea
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relation.isAuthorOfPublication.latestForDiscoverya8b335b2-45cc-4578-89b0-153273014280

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