Influence of nitrate fertilization on Cd uptake and oxidative stress parameters in alfalfa plants cultivated in presence of Cd

Hattab, Sabrine; Boussetta, Hamadi; Bannı, Mohamed

doi:10.4067/s0718-95162014005000007

Cited by 10 publications

(7 citation statements)

References 28 publications

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“…Cadmium (Cd) is a toxic heavy metal affecting plant yield and environment ( Järup and Åkesson, 2009 ; Naeem et al, 2015 ). It exhibits varied degrees of phytotoxicity and may replace essential metals or cofactors at enzyme active site causing an imbalance in cellular redox status ( Hattab et al, 2014 ). Furthermore, Cd at toxic level displaces protein structure and disrupts membrane integrity ( Rascio and Navarri-Izzo, 2011 ).…”

Section: Introductionmentioning

confidence: 99%

Role of Silicon Counteracting Cadmium Toxicity in Alfalfa (Medicago sativa L.)

et al. 2016

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Cadmium (Cd) is one of the most phytotoxic elements causing an agricultural problem and human health hazards. This work investigates whether and how silicon (Si) ameliorates Cd toxicity in Alfalfa. The addition of Si in Cd-stressed plants caused significant improvement in morpho-physiological features as well as total protein and membrane stability, indicating that Si does have critical roles in Cd detoxification in Alfalfa. Furthermore, Si supplementation in Cd-stressed plants showed a significant decrease in Cd and Fe concentrations in both roots and shoots compared with Cd-stressed plants, revealing that Si-mediated tolerance to Cd stress is associated with Cd inhibition in Alfalfa. Results also showed no significant changes in the expression of two metal chelators [MsPCS1 (phytochelatin synthase) and MsMT2 (metallothionein)] and PC (phytochelatin) accumulation, indicating that there may be no metal sequestration or change in metal sequestration following Si application under Cd stress in Alfalfa. We further performed a targeted study on the effect of Si on Fe uptake mechanisms. We observed the consistent reduction in Fe reductase activity, expression of Fe-related genes [MsIRT1 (Fe transporter), MsNramp1 (metal transporter) and OsFRO1 (ferric chelate reductase] and Fe chelators (citrate and malate) by Si application to Cd stress in roots of Alfalfa. These results support that limiting Fe uptake through the down-regulation of Fe acquisition mechanisms confers Si-mediated alleviation of Cd toxicity in Alfalfa. Finally, an increase of catalase, ascorbate peroxidase, and superoxide dismutase activities along with elevated methionine and proline subjected to Si application might play roles, at least in part, to reduce H2O2 and to provide antioxidant defense against Cd stress in Alfalfa. The study shows evidence of the effect of Si on alleviating Cd toxicity in Alfalfa and can be further extended for phytoremediation of Cd toxicity in plants.

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Section: Introductionmentioning

confidence: 99%

Role of Silicon Counteracting Cadmium Toxicity in Alfalfa (Medicago sativa L.)

et al. 2016

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“…Proper organic and inorganic fertilization is needed for Cd phytoremediation; for example, amendment of soil with quail litter biochar increased the physic nut yield and reduced Cd residue in the plants due to a reduction in bioavailability of Cd, resulting in decreased potential to remediate Cd-contaminated soil [21]. In contrast, the increase in alfalfa plant biomass as well as uptake of Cd was dependent on the supply of nitrate in pots of Cdamended soil [22].…”

Section: Mg Kgmentioning

confidence: 87%

Cadmium Phytoremediation Potential of Napiergrass Cultivated in Kyushu, Japan

Ishii

Hamano

Kang

et al. 2015

Applied and Environmental Soil Science

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Napiergrass (Pennisetum purpureum Schumach), a C 4 tropical species, has been used for forage since it has high dry matter productivity, sustainability over several years in low-altitudinal sites of Kyushu, and little damage from serious pests. Recently, this grass has gained attention due to its potential as a bioethanol feedstock and for phytoremediation. Napiergrass cultivar Wruk Wona was grown as an annual crop in cadmium-(Cd-) contaminated soils under two cutting frequencies. Annual dry matter yield was not affected significantly by cutting frequency, but the concentration and uptake of Cd were higher when cut twice rather than only once, due to high Cd content of the herbage from the second cutting. Therefore, the soil Cd concentration was reduced by 4.6% when managed by cutting twice in a single year of Napiergrass cultivation.

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“…Moreover, it can be obtained as a product of industries related to metal processing and mining [60]. Cadmium is a heavy metal belonging to the transition metals of the periodic table, which has an atomic number of 48, an atomic mass of 112.40 g/mol and a relative density of 8.65 g/cm 3 at 20 • C. It is not found in free state naturally, but associated with other metals such as zinc, lead, or copper; or elements such as oxygen, chlorine or sulfur forming minerals and rocks [81,82]. It can pass into the atmosphere through volcanic activity, and into the soil and continental waters through the decomposition of the rocks that contain it.…”

Section: Environmental Contamination By Cadmium Adverse Effects On Human and Animal Healthmentioning

confidence: 99%

“…It can pass into the atmosphere through volcanic activity, and into the soil and continental waters through the decomposition of the rocks that contain it. However, anthropogenic activity is the main contribution of this element to the environment through the generation of industrial waste from mining, paint pigments, waste incineration or its use as a fungicide in some agricultural treatments [82]. It is estimated that around 30,000 tons of this heavy metal are annually released into the environment, with some 13,000 tons coming from anthropogenic activities [83].…”

Section: Environmental Contamination By Cadmium Adverse Effects On Human and Animal Healthmentioning

confidence: 99%

Insights on Cadmium Removal by Bioremediation: The Case of Haloarchaea

Vera-Bernal

Martínez‐Espinosa

2021

Microbiology Research

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Although heavy metals are naturally found in the environment as components of the earth’s crust, environmental pollution by these toxic elements has increased since the industrial revolution. Some of them can be considered essential, since they play regulatory roles in different biological processes; but the role of other heavy metals in living tissues is not clear, and once ingested they can accumulate in the organism for long periods of time causing adverse health effects. To mitigate this problem, different methods have been used to remove heavy metals from water and soil, such as chelation-based processes. However, techniques like bioremediation are leaving these conventional methodologies in the background for being more effective and eco-friendlier. Recently, different research lines have been promoted, in which several organisms have been used for bioremediation approaches. Within this context, the extremophilic microorganisms represent one of the best tools for the treatment of contaminated sites due to the biochemical and molecular properties they show. Furthermore, since it is estimated that 5% of industrial effluents are saline and hypersaline, halophilic microorganisms have been suggested as good candidates for bioremediation and treatment of this kind of samples. These microorganisms, and specifically the haloarchaea group, are of interest to design strategies aiming the removal of polluting compounds due to the efficiency of their metabolism under extreme conditions and their significant tolerance to highly toxic compounds such as heavy metals, bromate, nitrite, chlorate, or perchlorate ions. However, there are still few trials that have proven the bioremediation of environments contaminated with heavy metals using these microorganisms. This review analyses scientific literature focused on metabolic capabilities of haloarchaea that may allow these microbes to tolerate and eliminate heavy metals from the media, paying special attention to cadmium. Thus, this work will shed light on potential uses of haloarchaea in bioremediation of soils and waters negatively affected by heavy metals, and more specifically by cadmium.

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Influence of nitrate fertilization on Cd uptake and oxidative stress parameters in alfalfa plants cultivated in presence of Cd

Cited by 10 publications

References 28 publications

Role of Silicon Counteracting Cadmium Toxicity in Alfalfa (Medicago sativa L.)

Role of Silicon Counteracting Cadmium Toxicity in Alfalfa (Medicago sativa L.)

Cadmium Phytoremediation Potential of Napiergrass Cultivated in Kyushu, Japan

Insights on Cadmium Removal by Bioremediation: The Case of Haloarchaea

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