Actinobacteria isolated from wastewater treatment plants located in the east-north of Algeria able to degrade pesticides

Oumeima Boufercha*, Irina Sousa Moreira, Paula M. L. Castro, Allaoueddine Boudemagh

*Autor correspondente para este trabalho

Resultado de pesquisarevisão de pares

Resumo

The pollution of water resources by pesticides poses serious problems for public health and the environment. In this study, Actinobacteria strains were isolated from three wastewater treatment plants (WWTPs) and were screened for their ability to degrade 17 pesticide compounds. Preliminary screening of 13 of the isolates of Actinobacteria allowed the selection of 12 strains with potential for the degradation of nine different pesticides as sole carbon source, including aliette, for which there are no previous reports of biodegradation. Evaluation of the bacterial growth and degradation kinetics of the pesticides 2,4-dichlorophenol (2,4-DCP) and thiamethoxam (tiam) by selected Actinobacteria strains was performed in liquid media. Strains Streptomyces sp. ML and Streptomyces sp. OV were able to degrade 45% of 2,4-DCP (50 mg/l) as the sole carbon source in 30 days and 84% of thiamethoxam (35 mg/l) in the presence of 10 mM of glucose in 18 days. The biodegradation of thiamethoxam by Actinobacteria strains was reported for the first time in this study. These strains are promising for use in bioremediation of ecosystems polluted by this type of pesticides.
Idioma originalEnglish
Número do artigo105
Número de páginas16
RevistaWorld Journal of Microbiology and Biotechnology
Volume38
Número de emissão6
DOIs
Estado da publicaçãoPublished - 3 mai 2022

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