Potential for bioremediation of agro-industrial effluents with high loads of pesticides by selected fungi

Biodegradation
Panagiotis A KarasDimitrios G Karpouzas

Abstract

Wastewaters from the fruit packaging industry contain a high pesticide load and require treatment before their environmental discharge. We provide first evidence for the potential bioremediation of these wastewaters. Three white rot fungi (WRF) (Phanerochaete chrysosporium, Trametes versicolor, Pleurotus ostreatus) and an Aspergillus niger strain were tested in straw extract medium (StEM) and soil extract medium (SEM) for degrading the pesticides thiabendazole (TBZ), imazalil (IMZ), thiophanate methyl (TM), ortho-phenylphenol (OPP), diphenylamine (DPA) and chlorpyrifos (CHL). Peroxidase (LiP, MnP) and laccase (Lac) activity was also determined to investigate their involvement in pesticide degradation. T. versicolor and P. ostreatus were the most efficient degraders and degraded all pesticides (10 mg l⁻¹) except TBZ, with maximum efficiency in StEM. The phenolic pesticides OPP and DPA were rapidly degraded by these two fungi with a concurrent increase in MnP and Lac activity. In contrast, these enzymes were not associated with the degradation of CHL, IMZ and TM implying the involvement of other enzymes. T. versicolor degraded spillage-level pesticide concentrations (50 mg l⁻¹) either fully (DPA, OPP) or partially (TBZ, IMZ). The...Continue Reading

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Citations

Jun 21, 2014·Analytical and Bioanalytical Chemistry·Carla SirtoriJosé A Sanchéz Pérez
Mar 8, 2012·Applied Microbiology and Biotechnology·Cinzia PezzellaGiovanni Sannia
Jan 6, 2015·Pest Management Science·Chiara PerruchonDimitrios G Karpouzas
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Feb 6, 2017·Applied Microbiology and Biotechnology·Chiara PerruchonDimitrios G Karpouzas
Mar 18, 2020·Ecotoxicology and Environmental Safety·Melissa Chan-ChengCarlos E Rodríguez-Rodríguez

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