Effects of EDTA on phytoextraction of heavy metals (Zn, Mn and Pb) from sludge-amended soil with Brassica napus

Zaier, Hanen; Ghnaya, Tahar; Rejeb, Kilani Ben; Lakhdar, Abdelbasset; Rejeb, Salwa; Jemal, Fatima

doi:10.1016/j.biortech.2010.01.035

Cited by 121 publications

(46 citation statements)

References 58 publications

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“…Interestingly, TF significantly increased in P. orientalis when seedlings were subjected to 100 mg kg -1 Pb. The Tolerance Index (TI) is assumed to equal 100 when there is no influence of the treatment on growth, whereas it takes values higher or lower than 100 in the case of positive or negative effects of the treatment, respectively (Zaier et al 2010). We observed that TI values slightly decrease in all the species with increasing soil Pb contamination, the lowest TI values being for F. excelsior at 400 and 500 mg kg -1 Pb.…”

Section: Discussionmentioning

confidence: 88%

Effect of soil-applied lead on mineral contents and biomass in Acer cappadocicum, Fraxinus excelsior and Platycladus orientalis seedlings

Abbasi¹,

Pourmajidian²,

Hodjati³

et al. 2017

iForest

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Phytoremediation is an effective and affordable approach to extract or remove lead from contaminated soil. An understanding of the physiological responses of different species subjected to heavy metal contamination is necessary before considering their use for environmental clean-up. The objective of this study was to assess the effect of lead (Pb) on growth and nutrient uptake in three forest species native to Iran: Cappadocian maple (Acer cappadocicum), European ash (Fraxinus excelsior) and Oriental aborvitae (Platycladus orientalis). The capability of lead uptake in different organs was studied in oneyear-old potted seedlings grown in contaminated soils with Pb concentration ranging from 100 to 500 mg kg -1 for six months in a nursery. Several phytoextraction parameters such as translocation factor (TF), tolerance index (TI) and bioconcentration factor (BCF) were assessed to investigate the phytoremediation potential of these species. Increasing Pb application in the soil caused a gradual decrease in dry weight of leaf and shoot of all species, while the dry weight of root remains unaffected. However, such inhibition was less marked in the conifer (P. orientalis) compared to the two broad-leaf species. Phosphorus uptake of all species slightly declined in contaminated soils. Contrastingly, Pb application did not hinder nitrogen and potassium uptake in seedlings. Atomic absorption thermo electron analysis of Pb-treated plants showed an increasing Pb accumulation in all plant compartments, although the result was more evident in the tissues of P. orientalis. This species also showed the highest values for TF, TI and BCF, indicating this conifer species as a potential candidate for phytoremediation of lead-polluted soils in Iran.

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Section: Discussionmentioning

confidence: 88%

Effect of soil-applied lead on mineral contents and biomass in Acer cappadocicum, Fraxinus excelsior and Platycladus orientalis seedlings

Abbasi¹,

Pourmajidian²,

Hodjati³

et al. 2017

iForest

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“…No toxicity symptoms were also observed by Chen and Cutright (2001) on sunflower and by Zaier et al (2010) on Brassica napus. The vertical distribution of plant biomass is reported in Table 2.…”

Section: Plant Biomassmentioning

confidence: 84%

Effects of ethylenediaminetetraacetic acid and ammonium sulfate on Pb and Cr distribution in Kochia scoparia from compost

Zhao

Shang

Duo

2013

Int. J. Environ. Sci. Technol.

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In a municipal solid waste (MSW) compost field, Kochia scoparia, an easy-to-grow weed plant, gradually invaded the experiment site and became the dominant species after 4 years' succession. 21.6, 19.2, 111.3, 124.3, and 154.0 % in 0-30, 30-60, 60-90, 90-120, and over 120 cm spatial shoots, respectively, as compared to those of controls. The increment for Cr uptake was 244.5, 281.7, 100.0, 77.2, and 187.4 %. The relationship between Pb and Cr concentrations in plant shoots and spatial height was found to be positively linear and statistically significant at 1 % level at 50 mmol L -1 EDTA alone and 25 mmol L

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“…In addition, translocation of lead to aerial plant parts increases in the presence of organic chelators like ethylenediaminetetraacetate (EDTA) Zaier et al 2010;Barrutia et al 2010) or certain species of micro-organisms (Arias et al 2010;Punamiya et al 2010). Recently, Liu et al (2010) reported that, in 30 B. pekinensis cultivars, increased soil lead levels also increased the percent translocation to aerial plant parts.…”

Section: Lead Accumulation In Plantsmentioning

confidence: 99%

“…The reduced lead uptake by vegetables minimizes the threat of lead introduction to the food chain. In contrast, phytoextraction requires plants that can sequester excessive amounts of lead in their biomass without incurring damage to basic metabolic functions (Arshad et al 2008;Zaier et al 2010). Pelargonium (Arshad et al 2008) and Brassica napus (Zaier et al 2010) are characterized as Pb hyperaccumulators, and they can extract huge amounts of lead from contaminated soil without showing morphophytotoxicity symptoms.…”

Section: Introductionmentioning

confidence: 99%

Lead Uptake, Toxicity, and Detoxification in Plants

Pourrut

Shahid

Dumat

et al. 2011

Reviews of Environmental Contamination and Toxicology

434

388

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Effects of EDTA on phytoextraction of heavy metals (Zn, Mn and Pb) from sludge-amended soil with Brassica napus

Cited by 121 publications

References 58 publications

Effect of soil-applied lead on mineral contents and biomass in Acer cappadocicum, Fraxinus excelsior and Platycladus orientalis seedlings

Effect of soil-applied lead on mineral contents and biomass in Acer cappadocicum, Fraxinus excelsior and Platycladus orientalis seedlings

Effects of ethylenediaminetetraacetic acid and ammonium sulfate on Pb and Cr distribution in Kochia scoparia from compost

Lead Uptake, Toxicity, and Detoxification in Plants

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