Summer and winter can equally stress holm oak (Quercus ilex L.) in Mediterranean areas: A physiological view

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dc.bibliographicCitation.titleFloraen
dc.bibliographicCitation.volume290es_ES
dc.contributor.authorMartín Sánchez, Rubénes_ES
dc.contributor.authorPeguero Pina, José Javieres_ES
dc.contributor.authorAlonso Forn, Davides_ES
dc.contributor.authorFerrio Díaz, Juan Pedroes_ES
dc.contributor.authorSancho Knapik, Domingoes_ES
dc.contributor.authorGil Pelegrín, Eustaquioes_ES
dc.coverage.spatialSAFMAes_ES
dc.date.accessioned2024-06-10T09:13:39Z
dc.date.available2024-06-10T09:13:39Z
dc.date.issued2022es_ES
dc.date.updated2024-06-10T07:49:44Z
dc.description.abstractQ. ilex is a circum-Mediterranean species which must deal with two stressful periods throughout the year: summer and winter. However, the intensity of these abiotic stresses is very variable depending on the specific area of its distribution range. Besides, two subspecies are usually distinguished, even sometimes recognised as two different true species. Nevertheless, differences in the response to both summer and winter stresses among populations overstep the purely taxonomic question. Regarding to temperature, this species has shown a high resistance to both extremes. On the one hand, critical temperature at leaf level has been estimated in 50.2 °C for a provenance in the Iberian Peninsula (Soria, Spain), a temperature which even in the hottest areas of its distribution range is hardly ever reached. On the other hand, minimal temperature for the survival of the leaves has been estimated in −19.8 °C for Italian provenances and -26.6 °C for one of the coldest provenances (Soria, Spain). Similarly, these temperatures are quite rarely reachable in their respective provenances. Concerning to summer-drought, this may compromise xylem stability in severe cases of scarcity of water in the soil, inducing cavitation when water soil potential is too negative. In this sense, Q. ilex has demonstrated to have a high resistance to cavitation, represented by quite negative values of P50 and P88 when compared to other species. Besides, Iberian provenances (i.e. the most continental ones) have shown a higher resistance to cavitation than French or Italian ones. Likewise, holm oak may suffer cavitation during winter, but in this case by a completely different factor: freezing-thawing cycles. Winter-cavitation seems to be related to vessel size, with wider vessels being more vulnerable to cavitate than narrower ones. In spite of its paleotropical origin, Q. ilex has achieved to develop multiple adaptations and physiological strategies that has enabled it not only to withstand the hard climatic conditions imposed by Mediterranean climate, but to colonize and even dominate great part of the Mediterranean landscape.en
dc.description.otherDroughten
dc.description.otherfrosten
dc.description.otherXylem-cavitationen
dc.description.otherQuercus ilexen
dc.description.otherMediterranean-type climatesen
dc.description.sponsorshipThis research was funded by Grant PID2019-106701RR-I00 funded by MCIN/AEI/ 10.13039/501100011033 and by Gobierno de Aragón H09_20R research group. Work of D.A-F. is supported by an FPI-INIA contract BES-2017-081208 and work of R.M-S. is supported by a pre-doctoral Gobierno de Aragón scholarship.es_ES
dc.description.statusPublishedes_ES
dc.identifier.citationFlora, 2022, 290, 152058
dc.identifier.issn03672530
dc.identifier.urihttp://hdl.handle.net/10532/7078
dc.language.isoenes_ES
dc.relation.doihttps://doi.org/10.1016/j.flora.2022.152058es_ES
dc.relation.urihttps://doi.org/10.1016/j.flora.2022.152058es_ES
dc.rightsAtribución-NoComercial-SinDerivadas 3.0 Españaes
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/3.0/es/es
dc.subject.agrovocSequíaes
dc.subject.agrovocClima mediterráneoes
dc.subject.agrovocQuercus ilexes
dc.subject.otherDrought tolerance
dc.subject.otherENERGY-DISSIPATION
dc.subject.otherFrost
dc.subject.otherFunctional traits
dc.subject.othermediterranean-type climates
dc.subject.otherPHOTOSYNTHETIC ACTIVITY
dc.subject.otherQuercus ilex
dc.subject.otherREFLECTANCE INDEX
dc.subject.otherSTOMATAL RESPONSES
dc.subject.otherwater relations
dc.subject.otherWOODY-PLANTS
dc.subject.otherXANTHOPHYLL CYCLE
dc.subject.otherXylem-cavitation
dc.subject.otherClima
dc.subject.otherDrought
dc.subject.otherfrost
dc.subject.otherINDUCED XYLEM CAVITATION
dc.subject.otherMediterranean-type climates
dc.subject.otherQuercus
dc.subject.otherQuercus ilex
dc.subject.otherXylem-cavitation
dc.titleSummer and winter can equally stress holm oak (Quercus ilex L.) in Mediterranean areas: A physiological viewen
dc.typearticle*
dc.type.refereedRefereedes_ES
dc.type.specifiedArticlees_ES

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