Plant peroxidases: biomarkers of metallic stress

Jouili, Hager; Bouazizi, Houda; Ferjani, Ezzedine El

doi:10.1007/s11738-011-0780-2

Cited by 92 publications

(43 citation statements)

References 53 publications

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“…na -not analyzed, measured values below detection limit, BDL -below detection limit (0.48 ng·kg -1 for As) and between the plants grown on the three types of soil, according to the C-A-B grouping except for those grown on soils U and C 1 I (Table 7). In agreement with our results, Contreras et al [49], Jouili et al [50], and Arunakumara et al [51] demonstrated that, when the concentration of HM is changed, the plants produce a different content of lipid peroxidation, which leads to the damage of the biological molecules. In conclusion, the excess of metals involves the induction of lipid peroxidation in plants, which causes the degradation of lipoprotein membrane by lipid peroxidation, which could also include the degradation of photosynthetic pigments, causing deterioration in growth [52].…”

Section: Resultssupporting

confidence: 93%

Heavy Metal-Induced Differential Responses to Oxidative Stress and Protection by Mycorrhization in Sunflowers Grown in Lab and Field Scales

Paun¹,

Neagoe²,

Paun³

et al. 2015

Pol. J. Environ. Stud.

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Heavy metals (HM) are some of the most frequent soil contaminants and a cause for long-term loss of soils, for destruction of natural habitats, loss of agricultural and inhabitable soils, and numerous health problems for wildlife and the human population. Reactive oxygen species (ROS) are generated during the normal metabolism of plants and activated by both biotic and abiotic stressors such as HM [1]. They are key messengers in plant responses to HM stress as part of their defense and adaptation mechanisms, either directly, by disturbing electron transport, or indirectly, by disturbing metabolic reactions, inactivation, and down-regulation of stress response enzymes and depletion of antioxidant substrates [2,3]. They also affect the photosynthetic system at many levels, leading to Pol. J. Environ. Stud. Vol. 24, No. 3 (2015), [1235][1236][1237][1238][1239][1240][1241][1242][1243][1244][1245][1246][1247] AbstractThe influence of arbuscular mycorrhizal (AM) fungi (Glomus intraradices) and of heavy metal stress on the characteristics of biomass production, as well as non-enzymatic and enzymatic variables in the roots, shoots, and leaves of sunflower (Helianthus annuus L.) plants were studied at pot and field scales. The intensity of the mycorrhizal colonization (M%) and the arbuscular abundance in the root system (A%) were found to be higher in the sunflower grown at lab scale (artificially inoculated) than that grown at field scale (natively inoculated). Thus, the AM symbiosis with the sunflower root system exposed to a different degree of pollution had a differential protective effect on plants at lab and field scales. A huge biomass of sunflower was harvested from the field compared to that obtained from the lab experiment. Furthermore, after measuring the biochemical variables of the plant parts, the results indicated a decrease in field for the superoxide dismutase and peroxidase activity, for the lipid peroxidation content, and for the assimilating pigments, while all quantified variables showed almost the same pattern of variation in all three plant parts. Consequently, it can be concluded that it is possible to use biochemical response variables, which in the case of our study are consistent with the protective effect of the fungus, as environmental biomarkers for soils with moderate pollution.

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Section: Resultssupporting

confidence: 93%

Heavy Metal-Induced Differential Responses to Oxidative Stress and Protection by Mycorrhization in Sunflowers Grown in Lab and Field Scales

Paun¹,

Neagoe²,

Paun³

et al. 2015

Pol. J. Environ. Stud.

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“…CAT is another major antioxidant enzyme that protects plant cells from hydrogen peroxide (Witlekens et al, 1995). POD is a multifunctional and ubiquitous enzyme found in plants, and is involved in numerous cellular processes such as development and stress responses (Jouili et al, 2011). These antioxidant enzyme activities change markedly in response to oxidative stress.…”

Section: Discussionmentioning

confidence: 99%

Responses in root physiological characteristics ofVallisneria natans(Hydrocharitaceae) to increasing nutrient loadings

Cai

Yao

Gao

et al. 2016

Knowl. Manag. Aquat. Ecosyst.

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-We selected the submerged macrophyte Vallisneria natans (Lour.) Hara for investigating the effects of nutrient loadings (nitrogen (N)-phosphorus (P) in mg·L−1 : (1) 0.5, 0.05; (2) 1.0, 0.1; (3) 5.0, 0.5; (4) 10.0, 1.0) on root physiological characteristics using sand culture during the growth season (June to October). Results showed that the best root growth was in macrophytes exposed to moderate nutrient conditions (N-P 2, in 1.0 and 0.10 mg· L −1 ), and high nutrient loadings induced declines in root growth. Analysis of root antioxidant enzyme (superoxide dismutase (SOD), peroxidase (POD) and catalase (CAT)) activities, protein content and cell ultrastructure revealed that the root of V. natans was subject to the stress of senescence during the end of the growth season. Moreover, high nutrient loadings increased oxidative stress in aging roots of V. natans, and made the cell ultrastructure of roots vulnerable to damage during senescence. The results for the changes in CAT activity suggest that CAT can serve as an important component of antioxidant defense mechanism in aging roots of V. natans to protect against nutrient loading induced oxidative injury in the early period. Key-words:Nutrient loading / oxidative stress / physiological response / root / Vallisneria natans Résumé -Réponses dans les caractéristiques physiologiques des racines de Vallisneria natans (Hydrocharitaceae) à l'augmentation des charges en éléments nutritifs. Nous avons choisi le macrophyte submergé Vallisneria natans (Lour.) Hara pour étudier les effets des charges d'éléments nutritifs (azote (N)-phosphore (P) en mg·L −1 : (1) de 0,5, 0,05 ; (2) 1,0 0,1 ; (3) 5.0, 0.5 ; (4) 10.0, 1.0) sur les caractéristiques physiologiques des racines en utilisant une culture sur sable pendant la saison de croissance (juin à octobre). Les résultats ont montré que la croissance des racines était la meilleure pour les macrophytes exposées à des conditions modérées de nutriments (NP (2), 1,0 et 0,10 mg·L −1 ), et que des charges élevées en éléments nutritifs induisaient une baisse de la croissance des racines. L'analyse de l'activité des enzymes antioxydantes des racines (superoxyde dismutase (SOD), peroxydase (POD) et catalase (CAT)), de la teneur en protéines et de l'ultrastructure cellulaire ont révélé que la racine de V. natans était soumise à la contrainte de la sénescence au cours de la fin de la saison de croissance. En outre, des charges élevées en nutriments augmentaient le stress oxydatif dans le vieillissement des racines de V. natans, et rendaient l'ultrastructure cellulaire des racines vulnérable aux dommages pendant la sénescence. Les résultats sur les changements dans l'activité CAT suggéraient que CAT peut servir comme une composante importante du mécanisme de défense antioxydante dans le vieillissement des racines de V. natans pour se protéger contre la charge en nutriments induisant des lésions oxydatives dans la période initiale. Mots-clés :Charge en éléments nutritifs / stress oxydatif / réponse physiologique / racine / Vallisn...

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“…The different enzyme reactions might be explained by their specific physiological roles. The reduction of H 2 O 2 to water is regarded as a secondary function of GPO in plants, while its main role is related to the oxidation of diverse substrates, thus playing a central role in controlling the cell wall biogenesis and in regulating its function, as well as in controlling the hormonal metabolism (De Gara et al 2010;Jouili et al 2011). On the other hand, the main physiological role of the two other enzymes evaluated in this study is supposed to be the elimination of excess H 2 O 2 .…”

Section: Separate Effect Of Excess Coppermentioning

confidence: 99%

“…Generally, the activity of one or more antioxidant enzymes is increased under metal stress and under excess Cu, in particular; however, contradictory effects have been observed. The enzyme reaction depends on enzyme type; plant species, variety, organ and prehistory; stress strength and duration; and environmental conditions (Luna et al 1994;Mazhoudia et al 1997;Zhao et al 2010;Jouili et al 2011). After pathogen recognition, both activation and deactivation of different scavenging systems have also been reported (Mehdy 1994;Torres et al 2006).…”

Section: Introductionmentioning

confidence: 99%

Separate and combined effects of excess copper and Fusarium culmorum infection on growth and antioxidative enzymes in wheat (Triticum aestivum L.) plants

Nenova

Bogoeva

2013

Journal of Plant Interactions

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The effect of stress combinations on plants cannot be extrapolated from the response to each of the applied stressors. Greenhouse experiments were carried out on soil to which copper ions were introduced at four concentrations (0, 150, 400, and 600 mg kg(1 ). Copper treatments without or with Fusarium infection were established. Both stress factors, applied separately or together inhibited growth with the exception of the lowest Cu concentration, which stimulated growth of healthy plants. Depending on concentration, Cu did not change or increased the activity of root peroxidase and leaf catalase, and decreased ascorbate peroxidase (APO) activity in leaves and roots. Infection increased the activities of the enzymes with exception of root APO. The simultaneous presence of these two stress factors modified their individual effects. Generally, the stress combination aggravated the plant status though an opposite trend was observed in some cases.

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Plant peroxidases: biomarkers of metallic stress

Cited by 92 publications

References 53 publications

Heavy Metal-Induced Differential Responses to Oxidative Stress and Protection by Mycorrhization in Sunflowers Grown in Lab and Field Scales

Heavy Metal-Induced Differential Responses to Oxidative Stress and Protection by Mycorrhization in Sunflowers Grown in Lab and Field Scales

Responses in root physiological characteristics ofVallisneria natans(Hydrocharitaceae) to increasing nutrient loadings

Separate and combined effects of excess copper and Fusarium culmorum infection on growth and antioxidative enzymes in wheat (Triticum aestivum L.) plants

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