Please use this identifier to cite or link to this item: https://hdl.handle.net/10316/105352
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dc.contributor.authorAraújo, Márcia-
dc.contributor.authorPrada, João-
dc.contributor.authorMariz-Ponte, Nuno-
dc.contributor.authorSantos, Conceição-
dc.contributor.authorPereira, José Alberto-
dc.contributor.authorPinto, Diana C. G. A.-
dc.contributor.authorSilva, Artur M. S.-
dc.contributor.authorDias, Maria Celeste-
dc.date.accessioned2023-02-20T09:47:44Z-
dc.date.available2023-02-20T09:47:44Z-
dc.date.issued2021-04-01-
dc.identifier.issn2223-7747pt
dc.identifier.urihttps://hdl.handle.net/10316/105352-
dc.description.abstractExtreme climate events are increasingly frequent, and the 2017 summer was particularly critical in the Mediterranean region. Olive is one of the most important species of this region, and these climatic events represent a threat to this culture. However, it remains unclear how olive trees adjust the antioxidant enzymatic system and modulate the metabolite profile under field stress conditions. Leaves from two distinct adjacent areas of an olive orchard, one dry and the other hydrated, were harvested. Tree water status, oxidative stress, antioxidant enzymes, and phenolic and lipophilic metabolite profiles were analyzed. The environmental conditions of the 2017 summer caused a water deficit in olive trees of the dry area, and this low leaf water availability was correlated with the reduction of long-chain alkanes and fatty acids. Hydrogen peroxide (H2O2) and superoxide radical (O2•-) levels increased in the trees collected from the dry area, but lipid peroxidation did not augment. The antioxidant response was predominantly marked by guaiacol peroxidase (GPOX) activity that regulates the H2O2 harmful effect and by the action of flavonoids (luteolin-7-O-glucuronide) that may act as reactive oxygen species scavengers. Secoiridoids adjustments may also contribute to stress regulation. This work highlights for the first time the protective role of some metabolite in olive trees under field drought conditions.pt
dc.language.isoengpt
dc.publisherMDPIpt
dc.relationUID/QUI/00062/2019pt
dc.relationUIDB/50006/2020pt
dc.relationSFRH/BD/116801/2016pt
dc.relationSFRH/BD/138187/2018pt
dc.relationSFRH/BPD/100865/2014pt
dc.relationUIDB/00690/2020pt
dc.relationUID/BIA/04004/2020pt
dc.rightsopenAccesspt
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt
dc.subjectclimate changept
dc.subjectflavonoidspt
dc.subjectsecoiridoidspt
dc.subjectOlea europaeapt
dc.subjectrainfed olive grovespt
dc.subjectdroughtpt
dc.titleAntioxidant Adjustments of Olive Trees (Olea Europaea) under Field Stress Conditionspt
dc.typearticle-
degois.publication.firstPage684pt
degois.publication.issue4pt
degois.publication.titlePlantspt
dc.peerreviewedyespt
dc.identifier.doi10.3390/plants10040684pt
degois.publication.volume10pt
dc.date.embargo2021-04-01*
uc.date.periodoEmbargo0pt
item.fulltextCom Texto completo-
item.grantfulltextopen-
item.languageiso639-1en-
item.cerifentitytypePublications-
item.openairetypearticle-
item.openairecristypehttp://purl.org/coar/resource_type/c_18cf-
crisitem.project.grantnoAssociated Laboratory for Green Chemistry - Clean Technologies and Processes- REQUIMTE-
crisitem.project.grantnoMountain Research Center - CIMO-
crisitem.author.researchunitCFE - Centre for Functional Ecology - Science for People & the Planet-
crisitem.author.researchunitCFE - Centre for Functional Ecology - Science for People & the Planet-
crisitem.author.orcid0000-0001-5440-1772-
crisitem.author.orcid0000-0002-2260-0600-
crisitem.author.orcid0000-0003-2861-8286-
crisitem.author.orcid0000-0002-3083-6218-
Appears in Collections:FCTUC Ciências da Vida - Artigos em Revistas Internacionais
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