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Aluminum inhibits root growth and induces hydrogen peroxide accumulation in Plantago algarbiensis and P. almogravensis seedlings

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dc.contributor.authorMartins, Neusa
dc.contributor.authorGonçalves, Sandra
dc.contributor.authorRomano, Anabela
dc.date.accessioned2015-06-18T10:12:34Z
dc.date.available2015-06-18T10:12:34Z
dc.date.issued2013
dc.description.abstractWe have evaluated the impact of aluminum (Al) on germination, relative root growth, Al accumulation in roots tips, H2O2 levels, plasma membrane integrity, pigment levels, protein content, and the activities of superoxide dismutase (SOD) and catalase (CAT) in seedlings of the endangered Portuguese species Plantago algarbiensis and Plantago almogravensis. We found that up to 400 μM Al had no impact on the germination percentage in either species but inhibited root growth in a concentration-dependent manner (more severely in P. algarbiensis). Al accumulation in the root tips of both species was concentration dependent up to 200 μM but declined thereafter despite the absence of membrane damage. We observed a concentration-dependent induction of SOD activity but no change in CAT activity resulting in the accumulation of H2O2 (a known growth inhibitor), although its impact in P. almogravensis may be partially ameliorated by the accumulation of carotenoid pigments. Our data suggest an association between Al uptake, H2O2 production, and the inhibition of root growth during early seedling development in P. algarbiensis and P. almogravensis, although the latter is more tolerant towards higher concentrations of the metal. © 2013 Springer-Verlag Wien.
dc.identifier.doihttp://dx.doi.org/10.1007/s00709-013-0511-1
dc.identifier.issn0033-183X
dc.identifier.otherAUT: ARO01015;
dc.identifier.urihttp://hdl.handle.net/10400.1/6397
dc.language.isoeng
dc.peerreviewedyes
dc.publisherSpringer Verlag
dc.relation.isbasedonP-008-HH5
dc.subjectAl uptake
dc.subjectAntioxidant enzymes
dc.subjectHydrogen peroxide
dc.subjectMetal toxicity
dc.subjectPlasma membrane integrity
dc.subjectRoot growth inhibition
dc.titleAluminum inhibits root growth and induces hydrogen peroxide accumulation in Plantago algarbiensis and P. almogravensis seedlings
dc.typejournal article
dspace.entity.typePublication
oaire.citation.endPage1302
oaire.citation.startPage1295
oaire.citation.titleProtoplasma
oaire.citation.volume250
person.familyNameGonçalves
person.familyNameRomano
person.givenNameSandra
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.orcid0000-0002-3038-4434
person.identifier.orcid0000-0002-7204-7428
person.identifier.ridM-6988-2017
person.identifier.scopus-author-id8583003200
person.identifier.scopus-author-id56249997600
rcaap.rightsrestrictedAccess
rcaap.typearticle
relation.isAuthorOfPublication7a8c0acc-a718-46d5-98dc-a724f1266e09
relation.isAuthorOfPublicationa8b335b2-45cc-4578-89b0-153273014280
relation.isAuthorOfPublicatione3343b60-17d3-4f5e-a2bf-06f26da69206
relation.isAuthorOfPublication.latestForDiscovery7a8c0acc-a718-46d5-98dc-a724f1266e09

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