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Weather year-to-year variations determine the influence of kaolin and salicylic acid in olive fruits and oil phenolic composition

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dc.contributor.authorBrito, Cátia
dc.contributor.authorDinis, Lia Tânia
dc.contributor.authorSilva, Ermelinda
dc.contributor.authorGonçalves, Alexandre
dc.contributor.authorRodrigues, M.A.
dc.contributor.authorMoutinho-Pereira, José
dc.contributor.authorBarros, Ana I.R.N.A.
dc.contributor.authorCorreia, Carlos M.
dc.date.accessioned2019-02-01T10:41:17Z
dc.date.available2019-02-01T10:41:17Z
dc.date.issued2018
dc.description.abstractOlive tree (Olea europaea L.) growing area is threatened by the current and predicted adverse environmental conditions, affecting negatively the quality of the olive products, largely known for its benefits in human diet. Thus, agronomic strategies may be implemented to offset those negative effects. During two consecutive years young olive trees under rainfed conditions were sprayed in the beginning of the summer season with 100 􀀁M salicylic acid (SA), a stress signaling phytohormone, or with kaolin 5% (KL), a heat and irradiance reflecting clay. The distinct weather conditions during the fruit development stage, with higher rainfall close to the harvest and the early frost events, in the first year, and the warmer and drier summer, in the second year, contributed to the increase in phenolic compounds in fruits and in olive oil from the first to the second year. Both KL and SA increased crop yield, while, in general, phenolics concentrations of both olives and oil were increased and decreased by the applied products in the first and second year, respectively. This dissimilar response was modulated by the distinct weather conditions, demonstrating the effectiveness of the applied products in attenuating the frost-promoted degradation of phenolic compounds in the first year and in mitigating the extreme adverse conditions felt in the summer of the second year. The phenolic composition was also distinctly affected, since total phenols, ortho-diphenols and flavonoids exhibited different trends. It is hard to conclude a specific influence of the applied products on olives and oil phenolic composition, since the weather year-to-year variations determine different plant responses.pt_PT
dc.description.sponsorshipDoctoral fellowship under the Doctoral Program “Agricultural Production Chains – from fork to farm” (PD/00122/2012) provided by the FCT-Portuguese Foundation for Science and Technology to C. Brito (PD/BD/ 52543/2014). Institution CITAB, for its financial support through the European Investment Funds by FEDER/COMPETE/POCI– Operational Competitiveness and Internationalization Program, under Project POCI-01-0145-FEDER-006958 and National Funds by FCT - Portuguese Foundation for Science and Technology, under the project UID/AGR/04033/2013.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.citationBrito, Cátia; Dinis, Lia; Silva, Ermelinda; Gonçalves, Alexandre; Rodrigues, M.A.; Moutinho-Pereira, José; Barros, Ana; Correia, Carlos (2018). Weather year-to-year variations determine the influence of kaolin and salicylic acid in olive fruits and oil phenolic composition. In In Congresso Nacional sobre Alterações Climáticas. Vila Realpt_PT
dc.identifier.urihttp://hdl.handle.net/10198/18616
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.relationPD/00122/2012pt_PT
dc.relationEFEITO DA APLICAÇÃO DE CAULINO E ACIDO SALICILICO NA MITIGAÇÃO DO STRESS ESTIUAL EM OLIVEIRA
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/pt_PT
dc.subjectOlivespt_PT
dc.subjectOilpt_PT
dc.subjectPhenolic compoundspt_PT
dc.subjectSummer stresspt_PT
dc.subjectFrostpt_PT
dc.titleWeather year-to-year variations determine the influence of kaolin and salicylic acid in olive fruits and oil phenolic compositionpt_PT
dc.typeconference object
dspace.entity.typePublication
oaire.awardTitleEFEITO DA APLICAÇÃO DE CAULINO E ACIDO SALICILICO NA MITIGAÇÃO DO STRESS ESTIUAL EM OLIVEIRA
oaire.awardURIinfo:eu-repo/grantAgreement/FCT//PD%2FBD%2F52543%2F2014/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FAGR%2F04033%2F2013/PT
oaire.citation.conferencePlaceVila Realpt_PT
oaire.citation.endPage34pt_PT
oaire.citation.startPage34pt_PT
oaire.citation.titleCongresso Nacional sobre Alterações Climáticas 2018pt_PT
oaire.fundingStream5876
person.familyNameRodrigues
person.givenNameManuel
person.identifier.ciencia-id371D-DF0D-8D68
person.identifier.orcid0000-0002-5367-1129
person.identifier.ridO-1721-2016
person.identifier.scopus-author-id35270106800
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typeconferenceObjectpt_PT
relation.isAuthorOfPublication43621353-fa11-4559-9b24-27eba5ad3de0
relation.isAuthorOfPublication.latestForDiscovery43621353-fa11-4559-9b24-27eba5ad3de0
relation.isProjectOfPublicationdbcd02b9-c993-41a5-aa23-c40485fdc8ea
relation.isProjectOfPublication3acb07e1-8183-43b8-8dfc-c0187a8741be
relation.isProjectOfPublication.latestForDiscoverydbcd02b9-c993-41a5-aa23-c40485fdc8ea

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