Antioxidative responses of three oak species under ozone and water stress conditions
| Autor: | Pellegrini E., Hoshika Y., Dusart N., Cotrozzi L., Gérard J., Nali C., Vaultie, M-N., Jolivet Y., Lorenzini G., Paoletti E. |
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| Přispěvatelé: | University of Pisa, Consiglio Nazionale delle Ricerche (CNR), SILVA (SILVA), Institut National de la Recherche Agronomique (INRA)-Université de Lorraine (UL)-AgroParisTech |
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
Environmental Engineering
Ozone 010504 meteorology & atmospheric sciences [SDV]Life Sciences [q-bio] Oxidative phosphorylation 010501 environmental sciences 01 natural sciences Antioxidants Quercus chemistry.chemical_compound Stress Physiological Oxidative damage Environmental Chemistry Climate change Phenylpropanoids Hydrogen peroxide Waste Management and Disposal Carotenoid 0105 earth and related environmental sciences chemistry.chemical_classification Air Pollutants Reactive oxygen species Phenylpropanoid Detoxification Halliwell-Asada cycle Pollution food and beverages Metabolism 15. Life on land Malondialdehyde Droughts Plant Leaves Horticulture chemistry 13. Climate action |
| Zdroj: | Science of the Total Environment Science of the Total Environment, Elsevier, 2019, 647, pp.390-399. ⟨10.1016/j.scitotenv.2018.07.413⟩ Science of the total environment 647 (2019): 390–399. doi:10.1016/j.scitotenv.2018.07.413 info:cnr-pdr/source/autori:Pellegrini E., Hoshika Y., Dusart N., Cotrozzi L., Gérard J., Nali C., Vaultie, M-N., Jolivet Y., Lorenzini G., Paoletti E./titolo:Antioxidative responses of three oak species under ozone and water stress conditions/doi:10.1016%2Fj.scitotenv.2018.07.413/rivista:Science of the total environment/anno:2019/pagina_da:390/pagina_a:399/intervallo_pagine:390–399/volume:647 |
| ISSN: | 0048-9697 1879-1026 |
| DOI: | 10.1016/j.scitotenv.2018.07.413⟩ |
| Popis: | Plants are frequently exposed to adverse environmental conditions such as drought and ozone (O-3). Under these conditions, plants can survive due to their ability to adjust their metabolism. The aim of the present study was to compare the detoxification mechanisms of three oak species showing different O-3 sensitivity and water use strategy. Two-year-old seedlings of Quercus ilex, Q. pubescens and Q. robur were grown under the combination of three levels of O-3 (1.0, 1.2 and 1.4 times the ambient O-3 concentration) and three levels of water availability (on average 100, 80 and 42% of field capacity i.e. well-watered, moderate drought and severe drought, respectively) in an O-3 Free Air Controlled Exposure facility. Ozone and drought induced the accumulation of reactive oxygen species (ROS) and this phenomenon was species-specific. Sometimes, ROS accumulation was not associated with membrane injury suggesting that several antioxidative defence mechanisms inhibited or alleviated the oxidative damage. Both O-3 and drought increased total carotenoids that were able to prevent the peroxidation action by free radicals in Q. ilex, as confirmed by unchanged malondialdehyde by-product values. The concomitant decrease of total flavonoids may be related to the consumption of these compounds by the cell to inhibit the accumulation of hydrogen peroxide. Unchanged total phenols confirmed that Q. ilex has a superior ability to counteract oxidative conditions. Similar responses were found in Q. pubescens, although the negative impact of both factors was less efficiently faced than in the sympatric Q. ilex. In Q. robur, high O-3 concentrations and severe drought induced a partial rearrangement of the phenylpropanoid pathways. These antioxidative mechanisms were not able to protect the cell structure (as confirmed by ROS accumulation) suggesting that Q. robur showed a lower degree of tolerance than the other two species. (c) 2018 Elsevier B.V. All rights reserved. |
| Databáze: | OpenAIRE |
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