Comparative toxicity of two glyphosate-based formulations to Eisenia andrei under laboratory conditions

Piola, Lucas; Fuchs, J.; Oneto, M. L.; Basack, Silvana; Kesten, Eva; Casabé, Norma

doi:10.1016/j.chemosphere.2012.12.036

Cited by 82 publications

(42 citation statements)

References 24 publications

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“…Numerous studies have shown that the formulations and surfactant additives are usually more toxic to test species (Barceló and Hennion, 1995;Giesy et al, 2000). Studies on various organisms such as nematode, juvenile frogs, freshwater crustaceans, microalgae and sturgeons showed that they exhibit significant toxicity to these organisms (Achiorno et al, 2008;Bernal et al, 2009;Ermis and Demir, 2009;Deepananda et al, 2011;Filizadeh and Islami, 2011;Bates and Edwards, 2013;Piola et al, 2013). Removal of glyphosate from soils is best carried out by bioremediation often employing glyphosate-degrading bacteria as the low con-centration of glyphosate in polluted soils make other form of remediation such as chemical and physical more expensive and unpractical.…”

Section: Introductionmentioning

confidence: 99%

ISOLATION AND CHARACTERIZATION OF A MOLYBDENUM-REDUCING AND GLYPHOSATE-DEGRADING Klebsiella oxytoca STRAIN SAW-5 IN SOILS FROM SARAWAK

et al. 2016

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Bioremediation of pollutants including heavy metals and xenobiotics is an economic and environmentally friendly process. A novel molybdenum-reducing bacterium with the ability to utilize the pesticide glyphosate as a carbon source is reported. The characterization works were carried out utilizing bacterial resting cells in a microplate format. The bacterium reduces molybdate to Mo-blue optimally between pH 6.3 and 6.8 and at 34 o C. Glucose was the best electron donor for supporting molybdate reduction followed by lactose, maltose, melibiose, raffinose, d-mannitol, d-xylose, l-rhamnose, l-arabinose, dulcitol, myo-inositol and glycerol in descending order. Other requirements include a phosphate concentration at 5.0 mM and a molybdate concentration between 20 and 30 mM. The molybdenum blue exhibited an absorption spectrum resembling a reduced phosphomolybdate. Molybdenum reduction was inhibited by mercury, silver, cadmium and copper at 2 ppm by 45.5, 26.0, 18.5 and 16.3%, respectively. Biochemical analysis identified the bacterium as Klebsiella oxytoca strain Saw-5. To conclude, the capacity of this bacterium to reduce molybdenum into a less toxic form and to grow on glyphosate is novel and makes the bacterium an important instrument for bioremediation of these pollutants.

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Section: Introductionmentioning

confidence: 99%

ISOLATION AND CHARACTERIZATION OF A MOLYBDENUM-REDUCING AND GLYPHOSATE-DEGRADING Klebsiella oxytoca STRAIN SAW-5 IN SOILS FROM SARAWAK

et al. 2016

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“…Santadino et al (2014) found that the biomass and the number of earthworms can be affected by the regular use of herbicides in agriculture. In another study, Piola et al (2013) affirmed that contaminants can reduce earthworms' available energy for growth, since detoxification processes are energy demanding. Figure 2 shows the results obtained for the biomass studies after 28 days of exposure to different concentrations of a commercial glyphosate formulation in the soil.…”

Section: Biomass Testsmentioning

confidence: 99%

“…(Piola et al, 2013;Hale et al, 2011) It is known that the addition of vermicompost in soil can retain pesticides, making them unavailable to the environment, depending on the pH of the medium, the soil characteristics and the pesticide itself. The incorporation of vermicompost to the soil contributes to the maintenance of the soil organic matter cycle.…”

Section: Introductionmentioning

confidence: 99%

Soil Contaminated with Glyphosate: Can Vermicompost Be Considered a Bioremediation Agent?

Rezende

Benetti²,

Pigatin³

2017

JAS

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The efficiency of the addition of vermicompost in relation to the decontamination of red latosol was evaluated against acute toxicity, biomass gain and reproduction of Eisenia foetida (earthworms) incubated in the contaminated soil. The soil was spiked to different concentrations of glyphosate from 96 mg kg -1 (recommended by the manufacturer) to 10000 mg kg -1 to simulate contamination by shedding of the herbicide. To evaluate the effect of vermicompost in the soil contaminated with 10000 mg kg -1 glyphosate, 15 g of vermicompost, totaling 3%, was added to the soil. The incorporation of vermicompost to the soil inhibited earthworm mortality. However, even the dose of 96 mg kg -1 presented deleterious effects on the reproduction of E. foetida. It can be concluded that the addition of vermicompost to soil contaminated with glyphosate attenuates the deleterious action of the herbicide on E. foetida.

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“…García-Torres et al [60] reported significant mortality at only very high concentrations (50,000 mg¨kg´1). Finally, Piola et al [61] found that lethal rates depended on commercial herbicide formulations. Regarding reproduction parameters, the number of juveniles and/or cocoons decreased at rates of 1 to 1000 mg¨kg´1 [55], 5000 mg¨kg´1 [60] and 1440 mg¨ai¨ha´1 [54].…”

Section: Land Uses and Management Systems In Argentine Pampasmentioning

confidence: 99%

Large-Scale Agricultural Management and Soil Meso- and Macrofauna Conservation in the Argentine Pampas

Bedano

Domínguez

2016

Sustainability

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Soil is the most basic resource for sustainable agricultural production; it promotes water quality, is a key component of the biogeochemical cycles and hosts a huge diversity of organisms. However, we are not paying enough attention to soil degradation produced by land use. Modern agriculture has been successful in increasing yields but has also caused extensive environmental damage, particularly soil degradation. In the Argentine Pampas, agriculturization reached a peak with the generalized use of the no-till technological package: genetically modified soybeans tolerant to glyphosate, no-till, glyphosate, and inorganic fertilizers. This phenomenon has been widely spread in the country; the no-till package has been applied in large areas and has been used by tenants in a 60%-70% of cultivated lands. Thus, those who were involved in developing management practices may not be the same as those who will face degradation issues related to those practices. Indeed, most evidence reviewed in this paper suggests that the most widely distributed practices in the Pampas region are actually producing severe soil degradation. Biological degradation is particularly important because soil biota is involved in numerous soil processes on which soil functioning relies, affecting soil fertility and productivity. For example, soil meso-and macrofauna are especially important in nutrient cycling and in soil structure formation and maintenance, and they are key components of the network that links microbial process to the scale of fields and landscapes where ecosystem services are produced. However, the knowledge of the impact of different agricultural managements on soil meso-and macrofauna in Pampas agroecosystems is far from conclusive at this stage. The reason for this lack of definite conclusions is that this area has been given less attention than in other parts of the world; the response of soil fauna to agricultural practices is complex and taxa-dependent; and there is a wide variety of practices in the main types of agricultural systems, making generalizations difficult. A review of the existing studies on soil meso-and macrofauna in agroecosystems, revealed that (a) agricultural soils, regardless of farming system, are strongly modified in biological aspects compared to the same soils without human interventions; (b) there are no conclusive results about no-till benefits compared to reduced tillage or conventional tillage; (c) agricultural managements that are alternative to the traditional conventional systems are very poorly represented in research.

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Comparative toxicity of two glyphosate-based formulations to Eisenia andrei under laboratory conditions

Cited by 82 publications

References 24 publications

ISOLATION AND CHARACTERIZATION OF A MOLYBDENUM-REDUCING AND GLYPHOSATE-DEGRADING Klebsiella oxytoca STRAIN SAW-5 IN SOILS FROM SARAWAK

ISOLATION AND CHARACTERIZATION OF A MOLYBDENUM-REDUCING AND GLYPHOSATE-DEGRADING Klebsiella oxytoca STRAIN SAW-5 IN SOILS FROM SARAWAK

Soil Contaminated with Glyphosate: Can Vermicompost Be Considered a Bioremediation Agent?

Large-Scale Agricultural Management and Soil Meso- and Macrofauna Conservation in the Argentine Pampas

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