Zinc-induced oxidative damage, antioxidant enzyme response and proline metabolism in roots and leaves of wheat plants

Li, Xiaoning; Yang, Yingli; Lee, Jia; Chen, Haijian; Xia, Wei

doi:10.1016/j.ecoenv.2012.11.025

Cited by 143 publications

(78 citation statements)

References 64 publications

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“…Since Cu is an essential element to plants (Li et al, 2013), there must have been an adequate supply to the grass, because no symptoms of deficiency or phytotoxicity were observed. The results found for the biosolid are consistent with those of Chan et al (2008), who report lower percentages of Cu for this fraction.…”

Section: Resultsmentioning

confidence: 99%

Copper and zinc fractionation in biosolid cultivated with Pennisetum purpureum in different periods

Oliveira

Cardoso

Sousa

et al. 2018

Rev. bras. eng. agríc. ambient.

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A B S T R A C TIn order to reduce the effect of heavy metals on the biosolid, it is necessary to promote its phytoremediation. It is important to know the total content and chemical forms of these elements in the residue for analyzing its behavior and potential toxicity. Thus, the aim of this study was to evaluate the fractionation and behavior of Cu and Zn in biosolid cultivated with Pennisetum purpureum in different periods. The experiment was carried out using a randomized complete block design. The treatments, with five replicates, corresponded to Pennisetum purpureum cultivation in biosolid for 30, 60, 90, 120 and 150 days after planting. The total contents of Cu and Zn in the biosolid remained below the critical limits established by the CONAMA Resolution 357, and there was a reduction in these values with Pennisetum purpureum cultivation. Furthermore, the increment in the grass cultivation period caused intense reduction of Zn contents bound to organic matter, but there was an increase in soluble Zn and residual Zn. Additionally, there was an intense reduction in the content of Cu bound to sulfides. Therefore, for biosolid phytoremediation purposes, the grass should be cultivated for 150 days.Fracionamento de cobre e zinco em biossólido cultivado com Pennisetum purpureum em diferentes períodos R E S U M O Para atenuar o efeito da presença de metais pesados no biossólido, faz-se necessária a sua fitorremediação, sendo fundamental o conhecimento das concentrações totais e das formas químicas destes elementos no resíduo para fins de análise do seu comportamento e potencial toxicidade. Assim, objetivou-se avaliar o comportamento e fracionamento do Cu e Zn em biossólido cultivado com Pennisetum purpureum em diferentes períodos. O experimento foi realizado utilizando-se delineamento em blocos casualizados. Os tratamentos, em cinco repetições, corresponderam ao cultivo de Pennisetum purpureum em biossólido por 30, 60, 90, 120 e 150 dias a partir do plantio. As concentrações totais de Cu e Zn no biossólido ficaram abaixo dos limites críticos da Resolução CONAMA 375, havendo redução destes valores com o cultivo de Pennisetum purpureum. Além disso, o incremento do período de cultivo da gramínea causou intensa redução da concentração de Zn ligado à matéria orgânica; por outro lado, houve aumento do Zn solúvel e residual. Já para o Cu houve intensa redução da concentração do elemento ligado a sulfetos. Assim, para fins de fitorremediação do biossólido, recomenda-se o plantio da gramínea por 150 dias. Key words:sequential extraction sewage sludge speciation of heavy metals Palavras-chave: especiação de metais pesados extração sequencial lodo de esgoto

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Section: Resultsmentioning

confidence: 99%

Copper and zinc fractionation in biosolid cultivated with Pennisetum purpureum in different periods

Oliveira

Cardoso

Sousa

et al. 2018

Rev. bras. eng. agríc. ambient.

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“…An excess of Zn exhibits different response in leaves and roots of wheat plant, while it causes dose-dependent induction of SOD activity in roots and no changes in leaves (Li et al 2013). Dixit et al (2001), however, showed that SOD activity in Cd-exposed pea plants increased significantly in leaves, while it mostly remained lower than the control in the roots.…”

Section: Introductionmentioning

confidence: 91%

Heavy Metal-Induced Oxidative Stress in Plants: Response of the Antioxidative System

Štolfa

Pfeiffer

Špoljarić

et al. 2015

Reactive Oxygen Species and Oxidative Damage in Plants Under Stress

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“…Generally, stress conditions due to lack or excess of nutrients in plants are related to the increase in antioxidant system activity (Li et al, 2013;Michael;Krishnaswamy, 2011;Jain et al, 2010). The increase in the detoxifying activity of enzymes of antioxidant system can be attributed, in large part, to the role of these compounds in ROS neutralization, contributing to cellular homeostatic metabolism (höller et al, 2014;Tripathi;Gaur, 2004).…”

Section: Discussionmentioning

confidence: 99%

Copper (Cu) stress affects carbon and antioxidant metabolism in Coffea arabica seedlings

Santos¹,

Fária²,

Silva³

et al. 2017

Aust J Crop Sci

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Although copper is a micronutrient essential for the normal development of plants, both insufficient and supra optimal doses can disrupt the functioning of metabolism and the production of biomass. To study the biochemical and physiological impacts of deficiency and excess of copper in coffee, we treated 6-month-old seedlings of Coffea arabica L. Catuaí cultivar to three copper treatments: control (0.03 ppm), excess (0.12 ppm) and deficiency (0 ppm) for 60 days. The changes in levels of photosynthetic pigments, biomass allocation, carbohydrate partitioning, antioxidant system and proline levels were evaluated. Under deficiency and excess of copper coffee seedlings showed lower levels of chlorophyll, reduction on dry weight of shoot, lower sugar levels and higher content of hydrogen peroxide. We also observed increased levels of proline and enzymatic activity of the antioxidant system, providing conditions for the reduction of oxidative stress triggered by nutritional imbalance. In general, the results showed that coffee plants invest in antioxidant defense system as an alternative to maintain redox balance when exposed to deficiency or excess copper. However, it is not effective to prevent an increase in lipid peroxidation. Authors may indicate an optimum range for application of copper in coffee.

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Zinc-induced oxidative damage, antioxidant enzyme response and proline metabolism in roots and leaves of wheat plants

Cited by 143 publications

References 64 publications

Copper and zinc fractionation in biosolid cultivated with Pennisetum purpureum in different periods

Copper and zinc fractionation in biosolid cultivated with Pennisetum purpureum in different periods

Heavy Metal-Induced Oxidative Stress in Plants: Response of the Antioxidative System

Copper (Cu) stress affects carbon and antioxidant metabolism in Coffea arabica seedlings

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