Cadmium accumulation and its influence on lipid peroxidation and antioxidative system in an aquatic plant, Bacopa monnieri L.

Singh, Surinder; Eapen, Susan; D’Souza, S.F.

doi:10.1016/j.chemosphere.2005.05.017

Cited by 348 publications

(194 citation statements)

References 31 publications

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“…Our results showed that with the increasing metal concentration, the MDA content increased, which is similar to the effect of heavy metals on other higher plants (Sinha and Saxena, 2006;Singh et al, 2006;Zhang et al, 2007). Proline accumulates in a variety of plant species in response to stresses such as drought, salinity and extreme temperatures.…”

Section: Discussionsupporting

confidence: 78%

Effect of excess iron and copper on physiology of aquatic plant Spirodela polyrrhiza (L.) Schleid

Xing

Huang

Liu

2009

Environmental Toxicology

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To elucidate effect of chemical reagents addition on growth of aquatic plants in restoration of aquatic ecosystem, Spirodela polyrrhiza (L.) Schleid was used to evaluate its physiological responses to excess iron (Fe 31 ) and copper (Cu 21 ) in the study. Results showed that accumulation of iron and copper both reached maximum at 100 mg L 21 iron or copper after 24 h short-term stress, but excess iron and copper caused plants necrosis or death and colonies disintegration as well as roots abscission at excess metal concentrations except for 1 mg L 21 iron. Significant differences in chlorophyll fluorescence (Fv/Fm) were observed at 1-100 mg L 21 iron or copper. The synthesis of chlorophyll and protein as well as carbohydrate and the uptake of phosphate and nitrogen were inhibited seriously by excess iron and copper. Proline content decreased with increasing iron or copper concentration, however, MDA content increased with increasing iron or copper concentration. # 2009 Wiley Periodicals, Inc. Environ Toxicol 25: 103-112, 2010.

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Section: Discussionsupporting

confidence: 78%

Effect of excess iron and copper on physiology of aquatic plant Spirodela polyrrhiza (L.) Schleid

Xing

Huang

Liu

2009

Environmental Toxicology

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“…We also observed that between Cd treated plants, carotenoid contents were greater in those of the highest Cd exposure (Table 1), as well as these plants showed increased MDA levels (Table 4). Increases in carotenoid levels have been found to be related to increasing oxidative stress in plants, thus aiding them in avoiding major deleterious effects on photosynthesis (Singh et al, 2006 fold (Kabata-Pendias and Pendias, 2001), as it was seen in the present study. Indeed, we verified a pronounced increase of Cd concentration in roots than in shoots of Cd treated plants compared to control, mainly from the highest Cd dose (9,266% in roots and 6,829% in shoots - Figure 2).…”

Section: Antioxidant Enzyme Activitiessupporting

confidence: 71%

“…Physiological features associated with Cd tolerance in Pfaffia glomerata: Plants are able to increase their antioxidant enzyme activities in order to reduce oxidative stress, thus increasing their Cd tolerance (Singh et al, 2006). Antioxidative defenses fall into two general classes: low molecular weight antioxidants, composed of lipid-soluble membraneassociated antioxidants (α-tocopherol and β-carotene) and water-soluble reductants (GSH and ascorbate), and enzymatic antioxidants (SOD, CAT, GPX, and APX) (Cao et al, 2004).…”

Section: Antioxidant Enzyme Activitiesmentioning

confidence: 99%

Cd-tolerance markers of Pfaffia glomerata (Spreng.) Pedersen plants: anatomical and physiological features

Gomes

Marques

Martins

et al. 2012

Braz. J. Plant Physiol.

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Physiological and anatomical features of Cd-tolerance in Pfaffia glomerata were examined by exposing plantlets to nutrient solutions with increasing Cd concentrations (0, 15, 45, and 90 µmol Cd L -1 ), and possible Cd-tolerance markers were established. Cd contents were found to be higher in roots than in shoots. According to the bioconcentration factor data, this species is effectively a Cd-hyperaccumulator, as previously attested. Cd induced the appearance of xeromorphic characteristics in leaves (decreased water potential, increased numbers and decreased stomata size) and increased root endodermis thickness. The enzymatic antioxidant systems of roots and leaves were differently affected by Cd. The coordinated activities of antioxidant enzymes were effective in reducing Cd-induced reactive oxygen species in plants, mainly in leaves. Root endodermis thickness, stomatal size and numbers, root superoxide dismutase, and guaiacol peroxidase, as well as leaf guaiacol peroxidase and catalase activities can all be considered Cd-tolerance markers in Pfaffia glomerata. Due to its high root Cd accumulation, Pfaffia glomerata may be useful in Cd-phytoextraction programs, however the pharmacological use of plants grown in the presence of Cd must be avoided.

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“…The concentrations of heavy metals (e.g., Cd) in some areas, however, is becoming increasingly high due to anthropogenic activities, including mining and industrial processes and the utilization of heavy metals in agriculture as herbicides, fungicides and phosphate fertilizers (Davis, 1984). Unfortunately, most Cd and other pollutants eventually enter the aquatic environment via the natural weathering of rocks and industrial effluents or agricultural run-off (Singh et al, 2006). Cadmium is easily taken up by plant roots and, once accumulated at toxic levels, may interfere with a number of metabolic processes, including photosynthesis and respiration (Hasan et al, 2009).…”

Section: Introductionmentioning

confidence: 99%

Cadmium-induced oxidative stress and antioxidative enzyme response in water hyacinth and salvinia

Vestena¹,

Cambraia²,

Ribeiro³

et al. 2011

Braz. J. Plant Physiol.

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The reactive oxygen species generation, lipid peroxidation and antioxidative enzyme response of water hyacinth and salvinia to Cd were evaluated. Cadmium was absorbed/accumulated mainly in the roots, but significant amounts also translocated to the leaves. No Cd effect on dry weight was detected, although toxicity symptoms were visible. Superoxide and H 2 O 2 concentrations increased, in addition to lipid peroxidation in both species, especially in the leaves of salvinia. In general, antioxidative enzyme activities were reduced in both species following Cd treatment, especially in salvinia. Glutathione peroxidase (GPX, EC 1.11.1.9) activity decreased in water hyacinth but increased in salvinia. Glutathione S-transferase (GST, EC 2.5.1.18) activity increased in the leaves but decreased in the roots of both species. So, Cd induced ROS generation/accumulation, but the antioxidative enzymes were not able to combat the Cd-induced oxidative injury in these two species. Nevertheless, water hyacinth consistently showed a higher tolerance to Cd than salvinia.

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Cadmium accumulation and its influence on lipid peroxidation and antioxidative system in an aquatic plant, Bacopa monnieri L.

Cited by 348 publications

References 31 publications

Effect of excess iron and copper on physiology of aquatic plant Spirodela polyrrhiza (L.) Schleid

Effect of excess iron and copper on physiology of aquatic plant Spirodela polyrrhiza (L.) Schleid

Cd-tolerance markers of Pfaffia glomerata (Spreng.) Pedersen plants: anatomical and physiological features

Cadmium-induced oxidative stress and antioxidative enzyme response in water hyacinth and salvinia

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