Differential physiological and metabolic responses in young and fully expanded leaves of Aristotelia chilensis plants subjected to drought stress

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datacite.alternateIdentifier.citationEnvironmental and Experimental Botany, 196, 2022
datacite.alternateIdentifier.doi10.1016/j.envexpbot.2022.104814
datacite.alternateIdentifier.issn0098-8472
datacite.creatorGonzález-Villagra, Jorge
datacite.creatorOmena-Garcia, Rebeca Patrícia
datacite.creatorRodrigues-Salvador, Acácio
datacite.creatorNunes-Nesi, Adriano
datacite.creatorCohen, Jerry D.
datacite.creatorReyes-Díaz, Marjorie M.
datacite.date2022
datacite.rightsRegistro bibliográfico
datacite.subjectFully-expanded Leaves
datacite.subjectMaqui
datacite.subjectPhytohormone
datacite.subjectUfgt Expression
datacite.subjectWater Stress
datacite.subjectCrop Yield
datacite.subjectDrought Resistance
datacite.subjectDrought Stress
datacite.subjectGrowth Rate
datacite.subjectLeaf Area
datacite.subjectMetabolism
datacite.subjectPhysiological Response
datacite.titleDifferential physiological and metabolic responses in young and fully expanded leaves of Aristotelia chilensis plants subjected to drought stress
dc.contributor.authorGONZALEZ VILLAGRA, JORGE ANDRES
dc.description.abstractDrought stress reduces plant growth and crop yields. Plants activate defense mechanisms, such as stomatal closure, phenolic compounds biosynthesis, compatible solutes, protein, amino acids, and abscisic acid to cope with drought stress. Most studies on drought stress effects have been focused only on fully expanded leaves, while information on young leaves is scarce. In this study, we investigated the differential photosynthetic performance as well as the primary and secondary metabolic responses in young and fully expanded leaves of Aristotelia chilensis plants subjected to drought stress. We found that drought stress negatively affected net CO<inf>2</inf> assimilation (A<inf>N</inf>), stomatal conductance (g<inf>s</inf>), and transpiration (E) more drastically in young leaves than fully expanded leaves of A. chilensis plants. On the other hand, young leaves accumulated higher total protein than fully expanded leaves of plants at day 10 of drought stress. Likewise, the total amino acid was increased in young leaves of stressed plants on days 5, 10, and 20, showing higher values at the end of the experiment. Starch was reduced in both young and fully expanded leaves of drought-stressed plants, while sucrose and fructose levels increased around 2-fold in young leaves at days 10 and 20 of drought stress. We observed that leucine and valine increased in young leaves at days 10 and 20 of drought stress, while in contrast, no changes were observed in the fully expanded leaves. PCA analysis clearly separated the young from fully expanded leaves at 10 and 20 days under drought stress, where anthocyanins and related genes (UFGT and NCED) were stimulated in fully expanded leaves, while in young leaves was amino acids, sucrose, and fructose. Our results demonstrate that young leaves stimulate branched-chain amino acid and phenylalanine accumulation, while fully expanded leaves stimulate anthocyanins and related genes, showing different physiological, biochemical, and molecular mechanisms to respond to drought stress. © 2022 Elsevier B.V., All rights reserved.
dc.description.ia_keywordleaves, drought, young, stress, fully, expanded, plants
dc.identifier.urihttps://repositoriodigital.uct.cl/handle/10925/4535
dc.language.isoen
dc.publisherElsevier BV
dc.relationinstname: ANID
dc.relationreponame: Repositorio Digital RI2.0
dc.rights.driverinfo:eu-repo/semantics/openAccess
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/cl/
dc.sourceEnvironmental and Experimental Botany
dc.subject.ia_oecd1nCiencias Naturales
dc.subject.ia_oecd2nCiencias Biológicas
dc.subject.ia_oecd3nBiología General
dc.type.driverinfo:eu-repo/semantics/article
dc.type.driverhttp://purl.org/coar/resource_type/c_2df8fbb1
dc.type.openaireinfo:eu-repo/semantics/publishedVersion
dspace.entity.typePublication
oaire.citationEdition2022
oaire.citationTitleEnvironmental and Experimental Botany
oaire.citationVolume196
oaire.fundingReferenceCONICYT Beca Doctorado Extranjeros 21130602
oaire.fundingReferenceANID FONDECYT 3200594 (Postdoctorado), 1171286 (Regular)
oaire.fundingReferenceCNPq Brasil
oaire.licenseConditionCopyright © Elsevier B.V., 2022
oaire.resourceTypeArtículo
oaire.resourceType.enArticle
relation.isAuthorOfPublication6b75f13b-9868-4c5e-ba11-e481d6c798e2
relation.isAuthorOfPublication.latestForDiscovery6b75f13b-9868-4c5e-ba11-e481d6c798e2
uct.catalogadorjvu
uct.comunidadRecursos Naturalesen_US
uct.departamentoDepartamento de Ciencias Agropecuarias y Acuícolas
uct.facultadFacultad de Recursos Naturales
uct.indizacionScience Citation Index Expanded - SCIE
uct.indizacionScopus
uct.indizacionPubMed
uct.indizacionCAB Abstracts
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