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Silicon improves the redox homeostasis to alleviate glyphosate toxicity in tomato plants—are nanomaterials relevant?

2021-08Journal article Open access
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dc.contributor.authorSoares, Cristiano
dc.contributor.authorNadais, Pedro
dc.contributor.authorSousa, Bruno
dc.contributor.authorPinto, Edgar
dc.contributor.authorFerreira, Isabel M. P. V. O.
dc.contributor.authorPereira, Ruth
dc.contributor.authorFidalgo, Fernanda
dc.date.accessioned2021-10-15T13:40:33Z
dc.date.available2021-10-15T13:40:33Z
dc.date.issued2021-08
dc.description.abstractGiven the widespread use of glyphosate (GLY), this agrochemical is becoming a source of contamination in agricultural soils, affecting non-target plants. Therefore, sustainable strategies to increase crop tolerance to GLY are needed. From this perspective and recalling silicon (Si)’s role in alleviating different abiotic stresses, the main goal of this study was to assess if the foliar application of Si, either as bulk or nano forms, is capable of enhancing Solanum lycopersicum L. tolerance to GLY (10 mg kg−1). After 28 day(s), GLY-treated plants exhibited growth-related disorders in both shoots and roots, accompanied by an overproduction of superoxide anion (O2•−) and malondialdehyde (MDA) in shoots. Although plants solely exposed to GLY have activated non-enzymatic antioxidant mechanisms (proline, ascorbate and glutathione), a generalized inhibition of the antioxidant enzymes was found, suggesting the occurrence of great redox disturbances. In response to Si or nano-SiO2 co-application, most of GLY phytotoxic effects on growth were prevented, accompanied with a better ROS removal, especially by an upregulation of the main antioxidant enzymes, including superoxide dismutase (SOD), catalase (CAT) and ascorbate peroxidase (APX). Overall, results pointed towards the potential of both sources of Si to reduce GLY-induced oxidative stress, without major differences between their efficacy.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationSoares, C., et al. (2021). "Silicon Improves the Redox Homeostasis to Alleviate Glyphosate Toxicity in Tomato Plants—Are Nanomaterials Relevant?" Antioxidants 10(8): 1320.pt_PT
dc.identifier.doi10.3390/antiox10081320pt_PT
dc.identifier.issn2076-3921
dc.identifier.urihttp://hdl.handle.net/10400.22/18713
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherMDPIpt_PT
dc.relation.publisherversionhttps://www.mdpi.com/2076-3921/10/8/1320pt_PT
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectHerbicidespt_PT
dc.subjectNanoparticlespt_PT
dc.subjectStress alleviationpt_PT
dc.subjectOxidative stresspt_PT
dc.subjectAntioxidantspt_PT
dc.titleSilicon improves the redox homeostasis to alleviate glyphosate toxicity in tomato plants—are nanomaterials relevant?pt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.citation.titleAntioxidantspt_PT
oaire.citation.volume10pt_PT
person.familyNamePinto
person.givenNameEdgar
person.identifier.ciencia-id271F-B7DF-8FAB
person.identifier.orcid0000-0002-8021-4783
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
relation.isAuthorOfPublicationeaf9fc86-1a1c-437f-adee-d28040aa7f2f
relation.isAuthorOfPublication.latestForDiscoveryeaf9fc86-1a1c-437f-adee-d28040aa7f2f

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