Impact of proline application on cadmium accumulation, mineral nutrition and enzymatic antioxidant defense system of Olea europaea L. cv Chemlali exposed to cadmium stress

Autor: Mohamed Zouari, Pascal Labrousse, Ferjani Ben Abdallah, Chedlia Ben Ahmed, Khaled Bellassoued, Béchir Ben Rouina, Nada Elloumi, David Delmail
Přispěvatelé: Université de Limoges (UNILIM), Faculté des Sciences de Sfax, Université de Sfax - University of Sfax, Institut des Sciences Chimiques de Rennes (ISCR), Université de Rennes 1 (UR1), Université de Rennes (UNIV-RENNES)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Université de Rennes (UNIV-RENNES)-Institut National des Sciences Appliquées (INSA)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS), Groupement de Recherche Eau, Sol, Environnement (GRESE), Université de Rennes (UR)-Institut National des Sciences Appliquées - Rennes (INSA Rennes), Institut National des Sciences Appliquées (INSA)-Institut National des Sciences Appliquées (INSA)-Ecole Nationale Supérieure de Chimie de Rennes (ENSCR)-Institut de Chimie du CNRS (INC)-Centre National de la Recherche Scientifique (CNRS)
Jazyk: angličtina
Rok vydání: 2016
Předmět:
0106 biological sciences
Antioxidant
Health
Toxicology and Mutagenesis
medicine.medical_treatment
010501 environmental sciences
medicine.disease_cause
Plant Roots
01 natural sciences
Antioxidants
chemistry.chemical_compound
Soil Pollutants
Biomass
Food science
Photosynthesis
2. Zero hunger
Minerals
Cadmium
biology
Chemistry
food and beverages
Cadmium stress
General Medicine
Catalase
Glutathione
Pollution
Biochemistry
Olea
Antioxidant enzymes
Oxidation-Reduction
Proline
Oil content
chemistry.chemical_element
Superoxide dismutase
medicine
[CHIM]Chemical Sciences
0105 earth and related environmental sciences
Superoxide Dismutase
Public Health
Environmental and Occupational Health
biology.organism_classification
Plant Leaves
Oxidative stress
biology.protein
Exogenous proline
Olive tree
010606 plant biology & botany
Zdroj: Ecotoxicology and Environmental Safety
Ecotoxicology and Environmental Safety, Elsevier, 2016, 128, pp.195--205. ⟨10.1016/j.ecoenv.2016.02.024⟩
Ecotoxicology and Environmental Safety, 2016, 128, pp.195--205. ⟨10.1016/j.ecoenv.2016.02.024⟩
ISSN: 0147-6513
1090-2414
Popis: International audience; Proline plays an important role in plant response to various environmental stresses. However, its involvement in mitigation of heavy metal stress in plants remains elusive. In this study, we examined the effectiveness of exogenous proline (10 and 20mM) in alleviating cadmium induced inhibitory effects in young olive plants (Olea europaea L. cv. Chemlali) exposed to two Cd levels (10 and 30mg CdCl2kg(-1) soil). The Cd treatment induced substantial accumulation of Cd in both root and leaf tissues and a decrease in gas exchange, photosynthetic pigments contents, uptake of essential elements (Ca, Mg and K) and plant biomass. Furthermore, an elevation of antioxidant enzymes activities (superoxide dismutase, catalase, glutathione peroxydase) and proline content in association with relatively high amounts of hydrogen peroxide, thiobarbituric acid reactive substances and electrolyte leakage were observed. Interestingly, the application of exogenous proline alleviated the oxidative damage induced by Cd accumulation. In fact, Cd-stressed olive plants treated with proline showed an increase of antioxidant enzymes activities, photosynthetic activity, nutritional status, plant growth and oil content of olive fruit. Generally, it seems that proline supplementation alleviated the deleterious effects of young olive plants exposed to Cd stress
Databáze: OpenAIRE
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