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Type of publication: research article
Type of publication (PDB): Straipsnis Clarivate Analytics Web of Science / Article in Clarivate Analytics Web of Science (S1)
Field of Science: Ekologija ir aplinkotyra / Ecology and environmental sciences (N012)
Author(s): Kacienė, Giedrė;Miškelytė, Diana;AbdElgawad, Hamada;Beemster, Gerrit;Asard, Han;Dikšaitytė, Austra;Žaltauskaitė, Jūratė;Sujetovienė, Gintarė;Januškaitienė, Irena;Juknys, Romualdas
Title: O-3 pollution in a future climate increases the competition between summer rape and wild mustard
Is part of: Plant physiology and biochemistry. Paris : Elsevier Masson SAS, 2019, Vol. 135
Extent: p. 194-205
Date: 2019
Note: This research is a part of a project “The integrated impact of climate and environmental changes on agroecosystems productivity, biodiversity and stability”, No. SIT-8/2015 and was supported by Research Council of Lithuania
Keywords: Weed-crop competition;Climate change;Ozone;Brassicaceae;Oxidative damage;Antioxidants;Plant sciences
Abstract: The initial aim of this study was to evaluate an effect of elevated CO2 concentration and air temperature (future climate) and O3 pollution on mono- and mixed-culture grown summer rape (Brassica napus L.) and wild mustard (Sinapis arvensis L.). The second task was to reveal the mechanisms of the shift in plants’ competitiveness in response to single and combined environmental changes. Plants were grown in mono- and mixed-cultures under current climate (CC) (400 µmol mol−1 of CO2, 21/14 °C day/night temperature) or future climate (FC) conditions (800 µmol mol−1 of CO2, 25/18 °C day/night temperature) with and without O3 treatment (180 µg m -3). Competition had relatively little effect on growth of both species at current climate, independent of O3 treatment. In contrast, competitive effect of both plant species considerably increased under FC, and especially FC+O3 conditions, when growth of mixed-culture rape reduced up to 48% and that of wild mustard up to 80%. The mechanisms of elevated competitiveness of rape under the future climate consisted of better antioxidative protection, particularly elevated total antioxidative capacity and activities of peroxidase and ascorbate peroxidase. Whereas stronger oxidative damage, disproportionally high activities of H2O2 scavenging enzymes and lower pool of soluble sugars in mixed-culture wild mustard reduced its competitiveness under FC+O3 conditions. In conclusion it must be pointed out, that regardless improved competitive abilities of rape under FC and FC+O3 conditions, competition with wild mustard reduced growth, indicating increased weed-induced yield losses in the future climate, especially with concomitant intensification of O3 pollution
Affiliation(s): Aplinkotyros katedra
Vytauto Didžiojo universitetas
Appears in Collections:Universiteto mokslo publikacijos / University Research Publications

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