How Mediterranean plant species are able to cope with increasing levels of UV-B radiation and drought in the context of climate change?

Climatic models predict higher fluxes of UV-B radiation and a decrease in summer precipitation in the near future for the Mediterranean region. The UV radiation can be an oxidative stress factor for plants affecting their physiological activity and morphology. In this context, we aim to investigate...

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Detalles Bibliográficos
Autor: Bernal Montolio, Meritxell
Tipo de recurso: tesis doctoral
Estado:Versión publicada
Fecha de publicación:2013
País:España
Institución:CBUC, CESCA
Repositorio:TDR. Tesis Doctorales en Red
OAI Identifier:oai:www.tdx.cat:10803/120560
Acceso en línea:http://hdl.handle.net/10803/120560
http://mediaserver.csuc.cat/tdx/documents/14/64/39/146439650720911699523324224137053798511/
Access Level:acceso abierto
Palabra clave:Ultraviolet radiation
Radiació ultraviolada
Radiación ultravioleta
UV
Drought
Sequera
Sequía
Mediterranean
Mediterrani
Mediterráneo
Plants
Plantes
Plantas
504
574
58
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spelling How Mediterranean plant species are able to cope with increasing levels of UV-B radiation and drought in the context of climate change?Bernal Montolio, MeritxellUltraviolet radiationRadiació ultravioladaRadiación ultravioletaUVDroughtSequeraSequíaMediterraneanMediterraniMediterráneoPlantsPlantesPlantas50457458Climatic models predict higher fluxes of UV-B radiation and a decrease in summer precipitation in the near future for the Mediterranean region. The UV radiation can be an oxidative stress factor for plants affecting their physiological activity and morphology. In this context, we aim to investigate the effects of UV (as UV-A as UV-B) radiation on Mediterranean woody species and its interaction with low water availability. The results showed that UV-A supplementation caused an increase in the plant biomass of some species when plants were grown under a low water supply. This beneficial effect on plant biomass seemed to be mediated by an improvement of plant water relations. Increases in leaf sclerophylly or leaf thickness, depending on the experiment, in response to enhanced UV radiation might have contributed to the amelioration of plant water deficitDurant les properes dècades, a la Regió Mediterrània es preveu un augment de la radiació ultraviolada UV-B i una disminució en la precipitació. La radiació UV pot ser un factor oxidatiu per les plantes afectant la seva activitat fisiològica i la seva morfologia. En aquest context pretenem investigar els efectes de la radiació UV (tant UV-A com UV-B) sobre les espècies llenyoses mediterrànies així com la seva interacció amb una baixa disponibilitat hídrica. Els nostres resultats mostren que l’augment dels nivells d’UV-A pot incrementar la producció de biomassa quan les plantes creixen sota condicions de baixa disponibilitat hídrica. Aquest efecte beneficiós podria ser degut a una millora de les relacions hídriques. Els canvis en la morfologia foliar observats en resposta a la radiació UV (fulles més gruixudes o amb un major índex de massa per àrea depenent de l’experiment) poden haver contribuït a aquesta millora de les relacions hídriquesUniversitat de GironaLlorens i Guasch, LauraVerdaguer Murlà, DolorsUniversitat de Girona. Departament de Ciències Ambientals201320132013info:eu-repo/semantics/doctoralThesisinfo:eu-repo/semantics/publishedVersion153 p.application/pdfapplication/pdfhttp://hdl.handle.net/10803/120560http://mediaserver.csuc.cat/tdx/documents/14/64/39/146439650720911699523324224137053798511/TDX (Tesis Doctorals en Xarxa)reponame:TDR. Tesis Doctorales en Redinstname:CBUC, CESCAInglésL'accés als continguts d'aquesta tesi queda condicionat a l'acceptació de les condicions d'ús establertes per la següent llicència Creative Commons: http://creativecommons.org/licenses/by-nc/3.0/es/http://creativecommons.org/licenses/by-nc/3.0/es/info:eu-repo/semantics/openAccessoai:www.tdx.cat:10803/1205602026-06-14T12:46:07Z
dc.title.none.fl_str_mv How Mediterranean plant species are able to cope with increasing levels of UV-B radiation and drought in the context of climate change?
title How Mediterranean plant species are able to cope with increasing levels of UV-B radiation and drought in the context of climate change?
spellingShingle How Mediterranean plant species are able to cope with increasing levels of UV-B radiation and drought in the context of climate change?
Bernal Montolio, Meritxell
Ultraviolet radiation
Radiació ultraviolada
Radiación ultravioleta
UV
Drought
Sequera
Sequía
Mediterranean
Mediterrani
Mediterráneo
Plants
Plantes
Plantas
504
574
58
title_short How Mediterranean plant species are able to cope with increasing levels of UV-B radiation and drought in the context of climate change?
title_full How Mediterranean plant species are able to cope with increasing levels of UV-B radiation and drought in the context of climate change?
title_fullStr How Mediterranean plant species are able to cope with increasing levels of UV-B radiation and drought in the context of climate change?
title_full_unstemmed How Mediterranean plant species are able to cope with increasing levels of UV-B radiation and drought in the context of climate change?
title_sort How Mediterranean plant species are able to cope with increasing levels of UV-B radiation and drought in the context of climate change?
dc.creator.none.fl_str_mv Bernal Montolio, Meritxell
author Bernal Montolio, Meritxell
author_facet Bernal Montolio, Meritxell
author_role author
dc.contributor.none.fl_str_mv Llorens i Guasch, Laura
Verdaguer Murlà, Dolors
Universitat de Girona. Departament de Ciències Ambientals
dc.subject.none.fl_str_mv Ultraviolet radiation
Radiació ultraviolada
Radiación ultravioleta
UV
Drought
Sequera
Sequía
Mediterranean
Mediterrani
Mediterráneo
Plants
Plantes
Plantas
504
574
58
topic Ultraviolet radiation
Radiació ultraviolada
Radiación ultravioleta
UV
Drought
Sequera
Sequía
Mediterranean
Mediterrani
Mediterráneo
Plants
Plantes
Plantas
504
574
58
description Climatic models predict higher fluxes of UV-B radiation and a decrease in summer precipitation in the near future for the Mediterranean region. The UV radiation can be an oxidative stress factor for plants affecting their physiological activity and morphology. In this context, we aim to investigate the effects of UV (as UV-A as UV-B) radiation on Mediterranean woody species and its interaction with low water availability. The results showed that UV-A supplementation caused an increase in the plant biomass of some species when plants were grown under a low water supply. This beneficial effect on plant biomass seemed to be mediated by an improvement of plant water relations. Increases in leaf sclerophylly or leaf thickness, depending on the experiment, in response to enhanced UV radiation might have contributed to the amelioration of plant water deficit
publishDate 2013
dc.date.none.fl_str_mv 2013
2013
2013
dc.type.none.fl_str_mv info:eu-repo/semantics/doctoralThesis
info:eu-repo/semantics/publishedVersion
format doctoralThesis
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/10803/120560
http://mediaserver.csuc.cat/tdx/documents/14/64/39/146439650720911699523324224137053798511/
url http://hdl.handle.net/10803/120560
http://mediaserver.csuc.cat/tdx/documents/14/64/39/146439650720911699523324224137053798511/
dc.language.none.fl_str_mv Inglés
language_invalid_str_mv Inglés
dc.rights.none.fl_str_mv http://creativecommons.org/licenses/by-nc/3.0/es/
info:eu-repo/semantics/openAccess
rights_invalid_str_mv http://creativecommons.org/licenses/by-nc/3.0/es/
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv 153 p.
application/pdf
application/pdf
dc.publisher.none.fl_str_mv Universitat de Girona
publisher.none.fl_str_mv Universitat de Girona
dc.source.none.fl_str_mv TDX (Tesis Doctorals en Xarxa)
reponame:TDR. Tesis Doctorales en Red
instname:CBUC, CESCA
instname_str CBUC, CESCA
reponame_str TDR. Tesis Doctorales en Red
collection TDR. Tesis Doctorales en Red
repository.name.fl_str_mv
repository.mail.fl_str_mv
_version_ 1869406842991411201
score 15,300724

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