Potential of Salvinia biloba Raddi for removing atrazine and carbendazim from aquatic environments

Dana B Loureiro, Luciana D Lario, María S Herrero, Lucas M Salvatierra, Luís A B Novo*, Leonardo M Pérez

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

1 Citation (Scopus)
20 Downloads (Pure)

Abstract

In this exploratory study, naturally occurring Salvinia biloba Raddi specimens were assessed for atrazine and carbendazim polluted water remediation. Experiments were carried out over 21 days in glass vessels containing deionized water artificially contaminated with 0, 5, 10, and 20 mg L-1 of atrazine or carbendazim. Atrazine had a pronounced detrimental impact on S. biloba, as no biomass development was observed in all macrophytes exposed to this herbicide in the entire concentration range. However, carbendazim-treated plants were able to grow and survive in the polluted medium even when subjected to the highest concentration of this fungicide (i.e., 20 mg L-1). In addition, increased chlorosis and necrosis were also detected in plants subjected to carbendazim as a result of the high phytotoxicity caused by atrazine. A maximal removal efficiency of ~ 30% was observed for both pesticides at 5 mg L-1 and decreased with increasing concentrations of the pollutants. The spectrum of the FTIR-ATR analysis revealed the existence of various functional groups (e.g., amide, carboxyl, hydroxyl, phosphate, sulfate) on the plants, which could be related to pesticide biosorption. In addition, at the end of the 21-day assay, seven carbendazim-resistant bacteria could be isolated from the roots of fungicide-treated plants. Therefore, the use of autochthonous free-floating S. biloba macrophytes for phytoremediation of aquatic environments contaminated with carbendazim shows great promise. Still, additional research is required to further elucidate the plant-mediated carbendazim elimination process and the role of the herbicide-resistant bacteria, and seek alternative species capable of mitigating atrazine contamination.

Original languageEnglish
Pages (from-to)22089-22099
Number of pages11
JournalEnvironmental Science and Pollution Research
Volume30
Issue number8
Early online date25 Oct 2022
DOIs
Publication statusPrint publication - Feb 2023

Bibliographical note

© 2022. The Author(s)

Keywords

  • Agrochemicals
  • Biosorption
  • Carbendazim-resistant bacteria
  • Crop protection products
  • Phytoremediation
  • Biodegradation, Environmental
  • Fungicides, Industrial/analysis
  • Pesticides/analysis
  • Water Pollutants, Chemical/analysis
  • Atrazine/analysis
  • Water/analysis
  • Herbicides/analysis
  • Tracheophyta

Fingerprint

Dive into the research topics of 'Potential of Salvinia biloba Raddi for removing atrazine and carbendazim from aquatic environments'. Together they form a unique fingerprint.

Cite this