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Lead Concentrations in Soils and Some Wild Plant Species ...

2017-12-16  This study assessed the level of Pb in soil and five wild plant species (Calotropis procera, Datura alba, Parthenium hysterophorus, Cenchrus ciliaris and Ricinus communis) during all the four seasons. Two busy roads varying in age and traffic volume were selected i.e., Faisalabad–Sargodha road (FSR) and Pindi Bhattian to Lillah (M-2) in the Punjab, Pakistan. Results showed raised levels of ...

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Effect of Plant Species and Benomyl on Lead

2011-12-1  Mean lead concentration in plant shoots (mgkg −1) for the nine species without or with benomyl applied. Means sharing the same letter are not significantly different. View in gallery Mean lead accumulation in shoots (μg/pot) for the nine species without or with benomyl applied.

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Lead accumulation in plants grown in polluted soils ...

2014-2-1  Lead concentration in plants. The concentrations of Pb in plant tissues were determined using a 20% hydrochloric acid extraction and nitric acid extraction, with each sample being analyzed in triplicate (Bermudez et al., 2009). First, 3 g DW of each organ (leaves, stems

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The effect of lead on plants in terms of growing and ...

2018-6-28  lead concentrations.36 Using isolated chloroplasts and mitochondria in different plant species it has been shown that lead affects the flow of electrons via the electron transport system.37 The inhibitory effect of lead at higher concentrations appears to be due to disconnection of oxidative phosphorylation.38 At lower concentrations, however ...

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(PDF) Lead Uptake, Toxicity, and Detoxification in Plants

Plants are the target of a wide range of pollutants that vary in concentration, speciation, and toxicity. Such pollutants mainly enter the plant system through the soil (Arshad et

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Lead accumulation in plants grown in polluted soils ...

The aim of this research work was to assess the phytoextraction suitability of native plant species growing in the vicinity of a former lead smelter. The lead concentration in leaves, stems and roots was determined in ten species collected at ten sampling sites along a lead concentration gradient in soil.

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Lead (Pb) bioaccumulation and antioxidative responses in ...

2020-10-13  Lead (Pb) is the second most toxic metal on Earth and is toxic to humans and other living things. In plants, Pb commonly inhibits growth when it is at a concentration in the soil of 30 mg/kg or ...

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Lead toxicity in plants: Impacts and remediation

Lead (Pb) is the second most toxic heavy metal after arsenic (As), which has no role in biological systems. Pb toxicity causes a range of damages to plants from germination to yield formation; however, its toxicity is both time and concentration dependent. Its exposure at higher rates disturbs the p

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Lead (Pb) and water - Lenntech

Lead limits plant chlorophyll synthesis. Nevertheless, plants can take up high levels of lead up to 500 ppm from soils. Higher concentrations negatively influence plant growth. Through plant uptake, lead enters food chains. Consequently, lead pesticide application is prohibited in most countries. Lead accumulates in organisms, sediments and sludge.

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Lead distribution in corn seedlings (Zea mays L.) and its ...

It was observed that dry weight yield is not a sensitive parameter withwhich to assess lead toxicity to plants. Elongation growth of corn seedlingroots was more sensitive to lead than shoot growth and was inhibited by allconcentrations tested (10−5, 10−4, and 10−3 M).It was positively correlated with potassium concentration and negativelycorrelated with lead concentration in the roots ...

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Effect of Plant Species and Benomyl on Lead

Mean lead concentration in plant shoots (mgkg −1) for the nine species without or with benomyl applied. Means sharing the same letter are not significantly different. View in gallery Mean lead accumulation in shoots (μg/pot) for the nine species without or with benomyl applied.

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The effect of lead on plants in terms of growing and ...

2018-6-28  lead concentrations.36 Using isolated chloroplasts and mitochondria in different plant species it has been shown that lead affects the flow of electrons via the electron transport system.37 The inhibitory effect of lead at higher concentrations appears to be due to disconnection of oxidative phosphorylation.38 At lower concentrations, however ...

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Plant growth and lead concentration.pdf - Exercise 1 Data ...

They then planted 50 seeds in each location. Examine the data in Table 4, which shows the amount of lead in the soil and the number of plants that grew. Then, answer the questions below. Table 4. Plant Growth and Soil Lead Concentration Lead Concentration (mg lead/kg soil) 0 20 40 60 80 100 120 140 Number of Plants Observed 48 45 40 34 23 13 ...

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Copper and lead concentrations in salt marsh plants on

Concentrations of Cu and Pb were determined in the roots and shoots of six salt marsh plant species, and in sediment taken from between the roots of the plants, sampled from the lower salt marsh zone at four sites along the Suir Estuary in autumn 1997. Cu was mainly accumulated in the roots of monoc

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Determination of lead content in medicinal plants by pre ...

2009-7-16  Lead concentrations ranged from 3.37 ± 0.25 to 7.03 ± 0.51 μg/g in dry material. This concentration interval is greater than that previously published in the literature. Conclusion – The inclusion of a pre‐concentration column in the flow manifold improved the

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(PDF) Lead Uptake, Toxicity, and Detoxification in Plants

Plants are the target of a wide range of pollutants that vary in concentration, speciation, and toxicity. Such pollutants mainly enter the plant system through the soil (Arshad et al. 2008) or via ...

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Lead transfer in the soil-root-plant system in a highly ...

2021-1-5  Introduction. Lead (Pb) is highly toxic to living organisms; it is naturally present in the earth’s crust in harmless concentrations, usually between 15–40 mg/kg (Fahr et al., 2013; Amari, Ghnaya Abdelly, 2017).According to the European REACH regulation and the Agency for Toxic Substances and Disease Registry, Pb is the second most harmful contaminant to humans

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Lead Uptake, Toxicity, and Detoxification in Plants

2021-9-13  Plants are the target of a wide range of pollutants that vary in concentration, speci-ation, and toxicity. Such pollutants mainly enter the plant system through the soil (Arshad et al. 2008) or via the atmosphere (Uzu et al. 2010). Among common pol-lutants that affect plants, lead is one of the most toxic and frequently encountered

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Heavy Metal Concentrations in Plants and Soil along

2020-3-6  Lead concentration of plants from the sites was found between 24-142 mg/kg and 24-157.667 mg/kg in soil samples. Copper was found between 28.55-115.2 mg/kg and 7.70-80.13 mg/kg in plant and soil samples respectively. Zinc ranges from 13.00-120.45 mg/kg and 30.8-

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The effect of sewage sludge on heavy metal

2017-5-18  Keskin et al. showed that sewage sludge increased the lead concentration in Bromus inermis Leyss, a species of herbaceous plants. The higher accumulation amount of the most metals including lead in root compared to stem indicates the mechanism of plant resistance to high concentrations of heavy metals in the soil (Brunetti et al. 2011 ).

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Effect of Plant Species and Benomyl on Lead

Mean lead concentration in plant shoots (mgkg −1) for the nine species without or with benomyl applied. Means sharing the same letter are not significantly different. View in gallery Mean lead accumulation in shoots (μg/pot) for the nine species without or with benomyl applied.

Read More
Lead Uptake, Toxicity, and Detoxification in Plants

2021-9-13  Plants are the target of a wide range of pollutants that vary in concentration, speci-ation, and toxicity. Such pollutants mainly enter the plant system through the soil (Arshad et al. 2008) or via the atmosphere (Uzu et al. 2010). Among common pol-lutants that affect plants, lead is one of the most toxic and frequently encountered

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Toxicological Profile for Lead

2020-8-6  This toxicological profile is prepared in accordance with guidelines* developed by the Agency for Toxic Substances and Disease Registry (ATSDR) and the Environmental Protection Agency (EPA).

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Lead distribution in corn seedlings (Zea mays L.) and its ...

2004-10-12  It was observed that dry weight yield is not a sensitive parameter withwhich to assess lead toxicity to plants. Elongation growth of corn seedlingroots was more sensitive to lead than shoot growth and was inhibited by allconcentrations tested (10−5, 10−4, and 10−3 M).It was positively correlated with potassium concentration and negativelycorrelated with lead concentration in the roots ...

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Effects of Lead on Plant Growth, Lead Accumulation and ...

2012-2-3  Our results indicated that lead tissue uptake increased with increasing concentrations of lead (i.e. 20.0 μM versus 1.0 μM). However, plant roots and shoots displayed symptoms of toxicity as evidenced by their decreased biomass with increasing concentrations of lead. Also, plants exposed to higher Pb concentrations exhibited mild chlorosis.

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Determination of lead content in medicinal plants by pre ...

Lead concentrations ranged from 3.37 ± 0.25 to 7.03 ± 0.51 μg/g in dry material. This concentration interval is greater than that previously published in the literature. Conclusion – The inclusion of a pre‐concentration column in the flow manifold improved the sensitivity of the spectrometer.

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Toxicity, mechanism and health effects of some heavy metals

2014-11-15  A plant with high lead concentration fastens the production of reactive oxygen species (ROS), causing lipid membrane damage that ultimately leads to damage of chlorophyll and photosynthetic processes and suppresses the overall growth of the plant (Najeeb et al., 2014).

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LEAD, CADMIUM AND COPPER CONCENTRATIONS IN

2011-5-24  Pb, Cd, and Cu concentrations in the soils studied were in the range of 17-602, 0.142-0.656 and 12-38 mg kg-1, respectively. Lead concentrations described above for plant leaves were found to be about 2000-fold higher than those in the same plants collected from the control area (1.0 mg Pb kg-1 for both plant species). Similarly, Cd levels in

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Bioremediation of Arsenic and Lead by Plants and

2020-8-21  Bioremediation of Arsenic and Lead by Plants and Microbes from Contaminated Soil. Mohd Sayeed Akhtar 1,, Birtaut Chali 1, Tanweer Azam 2. 1 Department of Biology, College of Natural Sciences, Jimma University, Jimma, Ethiopia. 2 Department Plant Sciences and Horticulture, College of Agriculture and Veterinary Sciences, Ambo University, Ambo, Ethiopia

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Effect of Heavy Metals on Plants: An Overview

2016-4-8  of plants. Reduction in the number of beneficial soil microorganisms due to high metal concentration may lead to decrease in organic matter decomposition leading to a less fertility of soil. Enzyme activities are very much useful for plant metabolism, hampered due to heavy metal interference with activities of soil microorganisms. These toxic ...

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