Effect of ageing and chemical form on the bioavailability and toxicity of Pb to the survival and reproduction of the soil invertebrate Enchytraeus crypticus

Zhang, Lulu; Gestel, Cornelis A.M. van

doi:10.1016/j.scitotenv.2019.02.054

Cited by 17 publications

(6 citation statements)

References 37 publications

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“…In terrestrial ecosystems, several species of invertebrates are used in ecotoxicity tests to assess the adverse effects of soil heavy metal pollution (Mazzei et al 2013;Sivakumar 2015, Zhang and. Survival, growth and reproduction of tested species are widely used as indicators of toxicity (Bur et al 2012;Zhang and van Gestel 2019;Zhu et al 2016). The Ccollembolan, Folsomia candida, is frequently used to assess the toxicity of heavy metals because it is a relevant sentinel species representing soil microarthropods (Cardoso et al 2019;Hopkin 2005, Zhu et al 2016).…”

Section: Introductionmentioning

confidence: 99%

Compartmentation and effects of lead (Pb) in the collembolan, Folsomia candida

Dai

Holmstrup

Slotsbo

et al. 2020

Environ Sci Pollut Res

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The impact of soil lead (Pb) pollution on survival, growth and reproduction of the Ccollembolan, Folsomia candida, and Pb compartmentation in its tissues were studied by exposing animals to laboratory-spiked soil. The survival, growth and reproduction of F. candida were significantly reduced by increasing soil Pb concentration. The LC50 values of survival based on total and CaCl2 extractable Pb concentration in soil were 2562 mg kg -1 and 351 mg kg -1 , respectively. The EC50 values of reproduction were 1244 mg kg -1 and 48 mg kg -1 , respectively. The Pb concentration in whole body, gut and residual body parts were significantly increased with the increase of soil Pb concentration and followed an exponential increase when the soil Pb concentration was equal to or above a threshold (1000 mg kg -1 for whole body and residual tissue, 500 mg kg -1 for gut tissue). Below this threshold, these relationships were linear. The Pb concentration in the gut was higher than other tissues of F. candida and the threshold of internal Pb concentration at which F. candida can compensate was in the range 7-13 mg Pb kg -1 dry animal (corresponding to soil Pb concentration 500-1000 mg Pb kg -1 dry soil). The results indicate that reproduction of F. candida was a more sensitive indicator of lead toxicity than survival and growth. Pb was mainly accumulated in the gut of F. candida. We discuss the value of Pb concentration in the body tissues as an indicator of adverse effects in the risk assessment of soil Pb pollution.

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Section: Introductionmentioning

confidence: 99%

Compartmentation and effects of lead (Pb) in the collembolan, Folsomia candida

Dai

Holmstrup

Slotsbo

et al. 2020

Environ Sci Pollut Res

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“…As a first hypothesis, it has here been assumed that aging is complete after 6 full months and justifies an increase by a factor of 3.4 in the effect concentration established after 0 months, and the correction decreases linearly with time in-between. The breakpoint time of 6 months is quite arbitrary but for instance for lead, no major change in sensitivity occurred after 6 months (Zhang & Van Gestel, 2019). The assumed curve is given in Figure A2.1 which also illustrates the only found information for rare earth elements, from Jiang, Weng, Huang, Jiang, and Wang (2008).…”

Section: A21 Uncertainties In the Soil To Biota Transfer And Biota Effect Thresholdsmentioning

confidence: 99%

Hypothetical Soil Thresholds for Biological Effects of Rare Earth Elements

Bengtsson¹

2021

JAS

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Objectives: Anthropogenic exposures to rare earth elements are poorly known and there is limited information on their toxicity and ecotoxicity. At the same time, world production of rare earth elements has doubled every 15 years over the last half-century, and high environmental concentrations of gadolinium and lanthanum have already been found. The current review aims to give some estimates of overall exposures and an initial in-depth appraisal of thresholds for effects on agricultural soil. The results are envisaged to be used in initial assessments of agricultural soil where the natural concentrations have been anthropogenically enhanced. Methods: An extensive review has been made of available scientific literature. Criteria have been established for the selection and analysis of eligible research. For instance, only effects on soils with vegetation have been included in the assessment of biological effects. A species sensitivity distribution based on 25% inhibition of organism functions has been used to establish thresholds for effects on soil organisms. Results: Around the year 2000, mean anthropogenic contributions of lanthanides in European soil regions were at most a few per cent of the total soil content. Since then, they should have increased considerably. The proposed hypothetical threshold for agricultural soils is 1125 mg total rare earth element per kg of soil. This threshold is about 8 times the natural soil concentration. Conclusions: If this result holds up to scrutiny, it implies that general anthropogenic pollution by rare earth elements will not be a threat to agricultural sustainability for the coming generation. A preliminary assessment suggests that this threshold would also protect humans from adverse effects due to secondary exposure.

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“…However, the toxic effects of Pb depend on speciation of Pb. The physiological changes of plant rhizosphere in Pbcontaminated soil can affect the metal transformation through acidification effect and mycorrhizae effect (Bolanet al 2014;Zhang and Van Gestel 2019;Baruah et al 2020;Bilias et al 2021). For farmland crops, such as maize, the supplement of fertilizer is inevitable.…”

Section: Introductionmentioning

confidence: 99%

The effect of phosphate application in Pb-contaminated soil on the oxidative stress of leaves, Pb accumulation in biomass of maize and Pb speciation in rhizosphere soil

Jiang

et al. 2022

Preprint

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Reducing the bioavailability of Pb in soil is the key to alleviate the toxicity of Pb to plant. Maize were exposed to Pb 100 mg/kg of soil with three fertilizer levels of control (T1), nitrogen, phosphorus and potassium of 204 mg/kg (T2) and nitrogen, potassium of 204 mg/kg (T3). The phosphate supplement lead to the reduction by 24.92%, 29.73% and 25.31% respectively in activity of total superoxide dismutase (T-SOD), peroxidase (POD) and concentration of lipid peroxidation (MDA) in maize leaves, and reduced Pb accumulation in above- and below-ground biomass of maize by 39.20% and 37.58%. In T2 treatment group, the water soluble Pb, ionic fraction and carbonate fraction Pb in rhizosphere soil decreased by 37.57%, 36.36% and 43.24%, and organic fraction Pb and residual fraction Pb was the highest with the value of 11.67 and 18.57 mg/kg; the soil aluminum bound (Al-P) and iron bound phosphate (Fe-P) were the highest with 93.53 mg/kg and 230.32 mg/kg, indicating that the phosphate supplement increases the soil ionic P and transforms the chemically mobilized P (such as O-P, Ca-P) into the bioavailable P. Moreover, the soil organic fraction and residual fraction immobilized Pb was positively correlated with the bioavailable Al-P and Fe-P, indicating that the ionic fraction P (Al-P and Fe-P) react with Pb and produce residual P-Pb compounds. Therefore, phosphate supplement to Pb contaminated soil could transfer unstable fraction Pb into stable fraction Pb by P-induced Pb immobilization, reduce the bioavailability of Pb and alleviate the toxicity of heavy metal to plant.

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Effect of ageing and chemical form on the bioavailability and toxicity of Pb to the survival and reproduction of the soil invertebrate Enchytraeus crypticus

Abstract: Effect of ageing and chemical form on the bioavailability and toxicity of Pb to the survival and reproduction of the soil invertebrate Enchytraeus crypticus Zhang, Lulu; Van Gestel, Cornelis A.M.

Cited by 17 publications

References 37 publications

Compartmentation and effects of lead (Pb) in the collembolan, Folsomia candida

Compartmentation and effects of lead (Pb) in the collembolan, Folsomia candida

Hypothetical Soil Thresholds for Biological Effects of Rare Earth Elements

The effect of phosphate application in Pb-contaminated soil on the oxidative stress of leaves, Pb accumulation in biomass of maize and Pb speciation in rhizosphere soil

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