Physiological and antioxidant responses of Salvinia natans exposed to chromium-rich wastewater

Dhir, Bhupinder; Sharmila, P.; Saradhi, P. Pardha; Nasim, Sekh Abdul

doi:10.1016/j.ecoenv.2009.03.015

Cited by 104 publications

(35 citation statements)

References 50 publications

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“…Although enzyme activities in L. minor treated with Cr were slightly elevated after 24 h, this induction was not significant. In addition, Dhir et al [41] reported that activity of CAT was not influenced even after 7 day exposure to 50 mg Cr L -1 . Treatments with Cd and Cr induce H 2 O 2 and MDA level in Lemna plants depending on the exposure duration [12,25,32].…”

Section: Discussionmentioning

confidence: 99%

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Short term exposure of Lemna minor and Lemna gibba to mercury, cadmium and chromium

2013

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The effects of mercury (Hg), cadmium (Cd) and chromium (Cr) in concentrations ranging from 0.02 to 20 mg L−1 applied for 24 h were assessed in Lemna minor and Lemna gibba by measuring changes in protein concentration, ascorbic acid, phenolics, malondialdehyde (MDA), hydrogen peroxide (H2O2), the activity of guaiacol peroxidase (G-POX) and catalase (CAT). Ascorbic acid, phenolics, catalase and guaiacol peroxidase played a key role in the antioxidative response of L. gibba. Inadequate activity of antioxidant enzymes in the L. minor resulted in MDA and H2O2 accumulation. In both used species, Hg treatment decreased protein content and increased CAT and G-POX activity, but decreased MDA and H2O2 levels. Cadmium and chromium had opposite impacts on two used Lemna species on almost all observed parameters. Enhanced antioxidative responses of L. gibba to lower concentrations of Hg, Cd and Cr indicated greater abiotic stress tolerance than L. minor.

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Section: Discussionmentioning

confidence: 99%

“…Many studies have tested and compared the impact of heavy metals based on their mass [7,32,35,40,41,47]. We concede that comparing molar concentrations would be more informative for future studies.…”

Section: Discussionmentioning

confidence: 99%

Short term exposure of Lemna minor and Lemna gibba to mercury, cadmium and chromium

2013

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“…The changes of root growth extrapolate in succession to the other phytotoxic symptoms on shoot under Cr contamination (Liu et al, 2008). In general, Cr-induced alteration of physiological activities in all plants starts with disease development and malfunctioning of root physiology (Dhir et al, 2009), which is manifested, to impair photosynthetic activities, water relation, translocation of organic solutes and so on as reported in cereal crop (Panda, 2007). Oxidative stress caused by Cr or other heavy metals as a severe phytotoxicity in every possible way limit successful plants growth and development.…”

Section: Discussionmentioning

confidence: 99%

“…Those include cell wall, apoplastic space, plasma membrane, chloroplast, mitochondria etc. But the production of ROS beyond the capacity of cells may create the oxidative damage (Dhir et al, 2009). …”

Section: Estimation Of Antioxidative Enzymesmentioning

confidence: 99%

Responses of the maize plant to chromium stress with reference to antioxidation activity

Maiti

Ghosh

Mandal

et al. 2012

Braz. J. Plant Physiol.

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Two maize varieties, viz. Sartaj and Deccan, have been evaluated according to their responses to chromium (Cr) in terms of specific physiological and biochemical attributes. During the exposure to Cr concentration (0, 50, 100, 200 and 300 µM) of potassium dichromate (K 2 Cr 2 O 7 ) for seven days, significant changes of oxidative stress in terms of lipid peroxidation and protein oxidation were recorded along with other antioxidative pathways. It is revealed that irrespective of varieties, Sartaj was more prone to oxidative stress since the amount of superoxide due to Cr exposure was found to be significant, unlike the second variety, Deccan. In addition, for Sartaj the activity of NAD(P)H oxidase recorded a significant linear increase in a dose response manner.The changes of antioxidative enzymes recorded significant variation in both varieties under stress compared to control. However, Deccan maintains a consistent up regulation in SOD and GPX activities. Contrarily, APX activity was less sensitive to both varieties. The activation of antioxidative mechanisms due to the impact of Cr-induced oxidative stress has been described subsequently. The results deriving from this investigation might be effective for the selection of tolerant plant types under chromium contamination.

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“…Salvinia (Salvinia natans Linn. ), an aquatic free floating ferns are abundant in growth in water bodies especially in marshy waste lands often contaminated with industrial effluents (Dhir et al 2009). Therefore, Salvinia could be an option as a plant material for hyper accumulation of toxic metals.…”

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confidence: 99%

Antioxidative responses of Salvinia (Salvinia natans Linn.) to aluminium stress and it’s modulation by polyamine

Mandal

Ghosh

Maiti

et al. 2012

Physiol Mol Biol Plants

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Antioxidative stress response of free-floating aquatic fern (Salvinia natans Linn.) was studied under increasing toxic amount of aluminium (Al) and its modulation by exogenous application of polymaine. Increased levels of superoxide (O 2 − ) and hydrogen peroxide (H 2 O 2 ) species from affected tissues suggested that plants were undergoing oxidative stress and it was concominant with increased accumulation of Al in a dose dependent manner. Application of polyamine like putrescine (Put) led to a decrease in oxidative stress as revealed by reduced level of O 2 − and H 2 O 2 . Al toxicity resulted into decreased biomass that was ameliorated by the application of Put. The changes observed in lipid peroxidation (MDA) and protein oxidation also indicated that plats are undergoing Al induced oxidative stress. In order to circumvent the oxidative stress resulting from Al toxicity, plants enzymatic and nonenzymatic antioxidant pathways were active. The ratio of both oxidized and reduced cellular glutathione exhibited significant variation in response to Al stress and was improved upon Put treatment. Peroxidase and glutathione were upregulated whereas catalse was downregulated under varying doses of Al. Isozyme profile of above enzymes also showed a trend with increasing amount of Al. The nuclear disintegration study using comet assay was indicative of Al induced oxidative stress. In the present study, we have explored the antioxidative response of aquatic fern Salvinia natans Linn in response to Al toxicity. The application of polyamine Put improved the overall antioxidative response and thus would make it a better candidate to be used as hyper accumulator of Al and other toxic metals.

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Physiological and antioxidant responses of Salvinia natans exposed to chromium-rich wastewater

Cited by 104 publications

References 50 publications

Short term exposure of Lemna minor and Lemna gibba to mercury, cadmium and chromium

Short term exposure of Lemna minor and Lemna gibba to mercury, cadmium and chromium

Responses of the maize plant to chromium stress with reference to antioxidation activity

Antioxidative responses of Salvinia (Salvinia natans Linn.) to aluminium stress and it’s modulation by polyamine

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