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Accueil du site → Doctorat → Espagne → 2013 → How Mediterranean plant species are able to cope with increasing levels of UV-B radiation and drought in the context of climate change ?.

Universitat de Girona (2013)

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

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

Auteur : Bernal Montolio, Meritxell

Université de soutenance : Universitat de Girona

Grade : Doctoral Thesis (2013)

Résumé
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

Mots clés : Ultraviolet radiation ; Radiació ultraviolada ; Radiación ultravioleta ; UV ; Drought ; Sequera ; Sequía ; Mediterranean ; Mediterrani ; Mediterráneo ; Plants ; Plantes ; Plantas

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Page publiée le 21 septembre 2013, mise à jour le 5 février 2019