Comparative studies of H2O2 detoxifying enzymes in green and greening barley seedlings under cadmium stress

Hegedűs, Attila; Erdei, Sára; Horváth, Gábor

doi:10.1016/s0168-9452(01)00330-2

Cited by 467 publications

(213 citation statements)

References 32 publications

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“…Increases in peroxidase activity under Cd stress were observed in our study. The results agree well with the result of some researchers, who observed increases in peroxidase under Cd stress in barley, sunflower cotyledons, cattail and reed (Gallego et al 1999, Hegedüs et al 2001, Fediuc and Erdei 2002. Peroxidase activity increased under the heavy metal stress when combined with S compared to the treatments without supplemental S. It indicated that the excess supply S would bring a negative effect.…”

Section: Discussionsupporting

confidence: 91%

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Physiological responses of maize to elemental sulphur and cadmium stress

Cui¹,

Wang²

2006

Plant Soil Environ.

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The physiological response to application of elemental sulphur (S) and cadmium (Cd) of maize (Zea mays L.) grown for 60 days in pot soil was studied. The S was added into the soil with 2 rates (0 and 50 mmol/kg) and Cd was added in solution in 4 rates (0, 20, 50, 100 mg/kg). All the S and Cd were added before planting. Shoot biomass decreased with the application of Cd to the soil whether S was applied or not. The application of S and Cd to soil led to an increasing accumulation of Cd in the shoots of maize. The concentration of chlorophyll was reduced significantly in Cd-treated plants with or without supplementary S. The content of malondialdehyde (MDA) was increased significantly in treatments with S and Cd, compared to the control. The activity of peroxidases (POD) was increased but catalase (CAT) was decreased in plants treated with Cd, again with or without S, in comparison with control. POD and CAT activities decreased in all the Cd treated plants with S, as compared to the plants without S. The results suggest that Cd reduces the crop growth, concentration of chlorophyll and activity of CAT, but increases the content of MDA and activity of POD. S supplies decrease the content of MDA, activities of POD and CAT, as compared to zero S supplies at the same rate of Cd application.

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Section: Discussionsupporting

confidence: 91%

“…Effects of Cd stress on plant growth and development were reported in several studies (Mohan and Hosetti 1997, Hegedüs et al 2001, Prasad et al 2001, Shah et al 2001. However, investigations on the combined effects of elemental S with Cd on antioxidative processes are rare.…”

mentioning

confidence: 99%

Physiological responses of maize to elemental sulphur and cadmium stress

Cui¹,

Wang²

2006

Plant Soil Environ.

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“…Cd treatment was found to increase the levels of ascorbate peroxidase (APX) and guaiacol peroxidase (G-POD) activity in a less Cd-sensitive wheat genotype, while in a more sensitive genotype these levels remained at the control level or only increased at higher Cd concentrations. However, higher concentrations or a longer time interval may cause inhibition of the antioxidant enzymes [2,3]. Heavy metal stress also induces non-enzymatic antioxidant compounds such as ascorbate (AA) [4].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and role of salicylic acid in wheat varieties with different levels of cadmium tolerance

Kovács

Gondor

Szalai

et al. 2014

Journal of Hazardous Materials

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Wheat genotypes with different endogenous SA contents were investigated, in order to reveal how cadmium influences salicylic acid (SA) synthesis, and to find possible relationships between SA and certain protective compounds (members of the antioxidants and the heavy metal detoxification system) and between the SA content and the level of cadmium tolerance.Cadmium exposure induced SA synthesis, especially in the leaves, and it is suggested that the phenyl-propanoid synthesis pathway is responsible for the accumulation of SA observed after cadmium stress. Cadmium influenced the synthesis and activation of protective compounds to varying extents in wheat genotypes with different levels of tolerance; the roots and leaves also responded differently to cadmium stress. Although a direct relationship was not found between the initial SA levels and the degree of cadmium tolerance, the results suggest that the increase in the root SA level during cadmium stress in the Mv varieties could be related with the enhancement of the internal glutathione cycle, thus inducing the antioxidant and metal detoxification systems, which promote Cd stress tolerance in wheat seedlings. The positive correlation between certain SA-related compounds and protective compounds suggests that SA-related signalling may also play a role in the acclimation to heavy metal stress.

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“…High take-up of Cu well beyond plant prerequisites brings about toxic impacts on plant normal functions (Monni et al 2000). Excess Cu has become deleterious to plants and is responsible for reduced seed germination, stunted root and shoot development, reduced yield, oxidative stress generation and formation of reactive oxygen species (ROS) (Stadtman and Oliver 1991;Azooz et al 2012) that causes damaging influence to metabolic pathways and harm to macromolecules (Hegedus et al 2001).…”

Section: Introductionmentioning

confidence: 99%

Potential for Phytoextraction of Cu by Sesamum indicum L. and Cyamopsis tetragonoloba L.: A Green Solution to Decontaminate Soil

et al. 2018

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Phytoextraction is a plant based-technique for removing toxic heavy metals from polluted soil. The experiment reported in this paper was undertaken to study the basic Cu phytoextraction potential of Sesamum indicum in comparison with Cyamopsis tetragonoloba for remediation of Cu contaminated soil in the framework of a pot-experiment. Plants were subjected to seven Cu concentrations (0, 25, 50, 100, 150, 200, and 300 mg kg −1 soil) for 12 weeks. The morphological (i.e. growth) and biochemical (i.e. chlorophyll) parameters of both the plant species were observed throughout the experimental period; the phytoextraction efficiency of S. indicum and C. tetragonoloba were also determined. Most growth parameters were reduced under high Cu stress. Our results shows that at low concentration (25 mg Cu kg −1 ) all the growth and biochemical parameters were increased but at elevated Cu concentrations, root length, shoot length, and biomass (fresh and dry) were all significantly decreased (p < 0.05). Chlorophyll contents also declined with increasing concentrations of Cu, when compared with control. A consistent increase of Cu accumulation in root and shoot of both S. indicum and C. tetragonoloba with rising concentrations of Cu in soil was noted for all tested treatments. In this study, both plant species showed quite high Cu tolerance and accumulation efficiency, even though C. tetragonoloba have higher Cu accumulation and tolerance indices than that of S. indicum. At 300 mg Cu kg −1 , the highest Cu concentration was found in the root (282.08 mg Cu kg −1 ) followed by leaf (105.78 mg Cu kg −1 ), stem (65.30 mg Cu kg −1 ), and pod (8.13 mg Cu kg −1 ) of S. indicum. In contrast, C. tetragonoloba had highest Cu concentration primarily in the root (158.45 mg Cu kg −1 ) followed by the stem (154.73 mg Cu kg −1 ), leaf (152.32 mg Cu kg −1 ), and pod (8.13 mg Cu kg −1 ). Considering rapid growth, high biomass, tolerance, accumulation efficiency, bioconcentration factor (BCF) > 1, bioaccumulation coefficient (BAC) > 1 and translocation factor (TF) > 1 established C. tetragonoloba as a potential candidate plant for the decontamination of slightly Cu-polluted soil where the growth of plants would not be impaired and the extraction of Cu could be maintained at satisfying levels. Therefore, the present study suggested that C. tetragonoloba could possibly be used as a viable tool for phytoextraction.

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Comparative studies of H2O2 detoxifying enzymes in green and greening barley seedlings under cadmium stress

Cited by 467 publications

References 32 publications

Physiological responses of maize to elemental sulphur and cadmium stress

Physiological responses of maize to elemental sulphur and cadmium stress

Synthesis and role of salicylic acid in wheat varieties with different levels of cadmium tolerance

Potential for Phytoextraction of Cu by Sesamum indicum L. and Cyamopsis tetragonoloba L.: A Green Solution to Decontaminate Soil

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