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Toxicity of methylparaben and its chlorinated derivatives to Allium cepa L. and Eisenia fetida Sav.

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Abstract

Methylparaben, chloro-methylparaben, and dichloro-methylparaben were evaluated in Allium cepa at 5, 10, 50, and 100 μg/L and in Eisenia fetida at 10 and 100 μg/L. In A. cepa roots, 100 μg/L methylparaben and 50 and 100 μg/L chlorinated methylparabens reduced cell proliferation, caused cellular changes, and reduced cell viability in meristems, which caused a reduction in root growth. Furthermore, they caused drastic inhibition of catalase, ascorbate peroxidase, and superoxide dismutase; activated guaiacol peroxidase and promoted lipid peroxidation in meristematic root cells. In earthworms, after 14 days exposure to the three compounds, there were no deaths, and catalase, ascorbate peroxidase, and superoxide dismutase were not inhibited. However, guaiacol peroxidase activity and lipid peroxidation were observed in animals exposed to dichloro-methylparaben. Soils with dichloro-methylparaben also caused the escape of earthworms. It is inferred that the recurrent contamination of soils with these methylparabens, with emphasis on chlorinated derivatives, can negatively impact different species that depend directly or indirectly on soil to survive.

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All authors certify that all data and materials, as well as the software application or custom code, support their published statements and meet field standards.

Abbreviations

MPB :

Methylparaben

ClMPB :

Chloro-methylparaben

DiClMPB :

Dichloro-methylparaben

PBS :

Phosphate buffer saline

PEG :

Poly ethylene glycol

PF :

Point fusion

RL :

Root length

MI :

Mitotic index

CAI :

Cell alteration index

nC :

Number of earthworms found in section B (control soil)

nT :

Number of earthworms found in section A (test soil)

nM :

Number of dead earthworms

N :

Total number of earthworms

SOD :

Superoxide dismutase

CAT :

Catalase

APX :

Ascorbate peroxidase

GPOX :

Guaiacol peroxidase

BOD :

Biochemical oxigen demand

TBA :

Thiobarbituric acid

TBARS :

Thiobarbituric acid reactive substances

DTPA :

Diethylenetriamine-pentaacetic acid

LBSS :

Balanced salt solution

EDTA :

Ethylenediamine tetraacetic acid

NTB :

Blue nitrotetrazolium chloride

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Authors and Affiliations

Authors

Contributions

All authors contributed to the study conception and design. Material preparation, data collection, and analysis were performed by Gabrielle Cristina dos Santos Gonçalves do Nascimento, Elisângela Dusman, Regiane da Silva Gonzalez, João Victor Nicola, Matheus Augusto de Souza Moura, Karine Mares de Oliveira, Anna Karolina Gomes Oliveira, Patricia Aline Bressani, Diego Espírito Santo, Ádila Cristina Krukoski Filipi, Eduardo Michel dos Santos Vieira, Juan Carlos Pokrywiecki, and Débora Cristina de Souza. The first draft of the manuscript was written by Ana Paula Peron, and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.

Corresponding author

Correspondence to Ana Paula Peron.

Ethics declarations

Ethics approval

This study did not involve humans. E. fetida earthworms are not considered by the animal ethics committee, that is, they do not need approval from the animal ethics committee to be used in research.

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All authors consented to participate in the manuscript.

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All authors have approved the manuscript and agree to its publication, if accepted by ESPR.

Competing interests

The authors declare no competing interests.

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Responsible Editor: Chris Lowe

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dos Santos Gonçalves Nascimento, G.C., Dusman, E., da Silva Gonzalez, R. et al. Toxicity of methylparaben and its chlorinated derivatives to Allium cepa L. and Eisenia fetida Sav.. Environ Sci Pollut Res 30, 57850–57861 (2023). https://doi.org/10.1007/s11356-023-26539-8

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  • DOI: https://doi.org/10.1007/s11356-023-26539-8

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