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Praćenje odgovora hrasta lužnjaka (Quercus robur L.) na sušu analizom antioksidativnog sistema

dc.creatorBojović, Mirjana
dc.creatorKesić, Lazar
dc.creatorČater, Matjaz
dc.creatorOrlović, Saša
dc.creatorStojanović, Marko
dc.creatorKebert, Marko
dc.creatorRacić, Gordana
dc.date.accessioned2023-08-21T06:44:09Z
dc.date.available2023-08-21T06:44:09Z
dc.date.issued2022
dc.identifier.issn0354-3285
dc.identifier.urihttps://redun.educons.edu.rs/handle/123456789/536
dc.description.abstractThe influence of different groundwater table depths on pre-dawn water potential (PWP), soil moisture content and antioxidant activity (FRAP, RSC against DPPH·, NO and ABTS radicals) of adult pedunculate oak (Quercus robur L.) trees was assessed in three managed stands (localities 1-3) and one unmanaged (locality 4 - forest reserve). The study sites were located within single forest complex at different distances from the Sava riverbed. The measurements were performed during July 2015, when the first evidence of drought was evidenced. We hypothesised that the trees at locations farther from the river would be more drought-stressed due to lower groundwater depth and will show higher antioxidant capacity. Indeed, trees at localities 2 and 3 were more drought-stressed as compared to trees at locations 1 and 4, as indicated by the PWP results. Since antioxidant capacity can be directly correlated to drought tolerance, the present results indicate a higher antioxidant capacity in leaf extracts from locality 3, but also good oxidative adaptation in leaf extracts from locality 4, where the obtained values for almost all examined antioxidant tests were without statistically significant differences compared to those on locality 3. Obtained results may help to explain differences in biochemical responses to water deficit stress of pedunculate oak trees from different microsites within the single forest complex and provide us valuable information about intra-species drought resistance. Therefore, this can be an important tool for the improvement of breeding strategies and artificial regeneration plans for pedunculate oak in dry lowland regions.sr
dc.description.abstractU ovom radu, procenjen je uticaj različitih dubina podzemnih voda na vodni potencijal lista (PWP), sadržaj vlage u zemljištu i antioksidativnu aktivnost (FRAP, inhibicija DPPH,·NO i ABTS radikala) odraslih stabala hrasta lužnjaka (Quercus robur L.) u tri gazdovne sastojine (lokaliteti 1-3) i u jednoj neuređenoj (lokalitet 4 – šumski rezervat). Lokacije istraživanja su se nalazile u okviru jedinstvenog šumskog kompleksa na različitim udaljenostima od korita Save. Merenja su obavljena tokom jula 2015. godine, kada su zabeleženi prvi dokazi o suši. Pretpostavili smo da će drveće na lokacijama udaljenim od reke biti pod većim sušnim stresom zbog manje dubine podzemne vode i da će pokazati veći antioksidantni kapacitet. Zaista, drveće na lokalitetima 2 i 3 bilo je pod većim stresom od suše u poređenju sa drvećem na lokacijama 1 i 4, kao što pokazuju rezultati PWP. Obzirom da antikosidativni kapacitet može biti direktno povezan sa tolerancijom na sušu, sadašnji rezultati ukazuju na veći antioksidativni kapacitet u ekstraktima listova sa lokaliteta 3 ali i na dobru oksidativnu adaptaciju listova sa lokaliteta 4, gde su dobijene vrednosti za skoro sve ispitivane antioksidativne testove bile su bez statistički značajnih razlika u odnosu na vrednosti dobijene na lokalitetu 3. Dobijeni rezultati mogu pomoći da se objasne razlike u biohmeijskim odgovorima na stres vodnog deficita kod stabala hrasta lužnjaka sa različitih mikrolokacija u okviru jedinstvenog šumskog kompleksa i daju nam dragocene informacije o intra-specijskoj otpornosti na sušu. Stoga, ovo može biti važna alatka za unapređivanje strategije oplemenjivanja i planova veštačke regeneracije hrasta lužnjaka u suvim ravničarskim regionima.sr
dc.language.isoensr
dc.publisherBeograd : Naučno-stručno društvo za zaštitu životne sredine Srbije - Ecologicasr
dc.relationinfo:eu-repo/grantAgreement/MESTD/inst-2020/200197/RS//sr
dc.rightsopenAccesssr
dc.sourceEcologicasr
dc.subjectpedunculate oaksr
dc.subjectantioxidant activitysr
dc.subjectSava riverbedsr
dc.subjectforest complexsr
dc.subjectdroughtsr
dc.titleTracing the responses of pedunculate oak (Quercus robur L.) trees to drought stress by analyzing the antioxidant systemsr
dc.titlePraćenje odgovora hrasta lužnjaka (Quercus robur L.) na sušu analizom antioksidativnog sistemasr
dc.typearticlesr
dc.rights.licenseARRsr
dc.citation.epage358
dc.citation.issue107
dc.citation.spage350
dc.citation.volume29
dc.identifier.doi10.18485/ecologica.2022.29.107.8
dc.identifier.fulltexthttp://redun.educons.edu.rs/bitstream/id/1001/ecologica-2022-29-107-8.pdf
dc.type.versionpublishedVersionsr
dc.identifier.cobiss80263175


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