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Nickel and zinc absorption and growth of Atlantic Forest trees cultivated in polluted soil

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Abstract

Background and aims

The Brazilian Atlantic Forest has been affected by the deposition of Ni and Zn, among other heavy metals adsorbed on atmospheric particles, which can be incorporated into the soil. If available in the soil, they can be absorbed by plant roots. The study aimed at testing experimentally the hypotheses: 1) Ni and Zn depositions increase their bioavailable fractions in the soil; 2) pioneer tree species absorb Ni and Zn from the soil in higher level and less growth changes than non-pioneer species.

Methods

The experiment was carried out with six pioneer and non-pioneer species native to the Atlantic Forest, grown for 90 days in: soil with balanced fertilization (control) and in soil enriched with Ni, Zn or Ni + Zn. At the end, the concentrations of Ni and Zn were determined in four soil fractions (F1: soluble; F2: linked to oxides/hydroxides; F3: linked to organic matter: F4: residual metals) and in leaves, stems/branches and roots. Mobility factors in soil, concentration ratios between treatments and respective controls, translocation efficiency and relative growth rate in height, leaf number and total biomass were also calculated.

Results

The results showed that Ni and Zn concentrations increased significantly in the bioavailable soil fractions (F1, F2). The absolute content of Ni and Zn in the plants directly reflected the soil level in the available forms.

Conclusions

Pioneer tree species absorb Ni and Zn in higher level and show less changes in growth than non-pioneer tree species.

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Data is available by request to the authors.

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Acknowledgements

We are grateful to the Coordination for the Improvement of Higher Education Personnel (CAPES) and São Paulo Research Foundation (FAPESP, grant number: 2016 / 25642-3), for the scholarships granted to the first author; Parque Estadual das Fontes do Ipiranga, for permitting the soil collection used in the experiment, and Dr. Jorge A. S; Tenório, from Polytechnic School of University of São Paulo, for the soli and plant analyses. The manuscript was edited for grammar, spelling, vocabulary and sentence structure by Rebbeca Hennig.

Funding

This work was supported by Coordination for the Improvement of Higher Education Personnel (CAPES, Brazil) and The São Paulo Research Foundation (FAPESP, Brazil scholarship number granted: 2016 / 25642-3).

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Authors and Affiliations

Authors

Contributions

All authors contributed to the study conception and design. Solange Eulália Brandão, Mirian CS Rinaldi and Marisa Domingos: Conceptualization, methodology, validation, formal analysis, research, writing, visualization and project administration. Geane M. Barbosa, Matheus C. Siqueira, Rafaela de O. A. Campos, and Ana C. F. Dalsin: Methodology and research. The first draft of the manuscript was written by Solange Eulália Brandão and all authors commented on previous versions of the manuscript. All authors read and approved the final manuscript.

Corresponding author

Correspondence to Solange E. Brandão.

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The authors declare that there is no conflict of interest.

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Responsible Editor: Juan Barcelo.

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Supplementary file1 (DOCX 82 kb)

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Brandão, S.E., Barbosa, G.M., Siqueira, M.C. et al. Nickel and zinc absorption and growth of Atlantic Forest trees cultivated in polluted soil. Plant Soil 471, 463–475 (2022). https://doi.org/10.1007/s11104-021-05228-w

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  • DOI: https://doi.org/10.1007/s11104-021-05228-w

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