Biodegradation of low-density polyethylene microplastics by Fusarium and Penicillium strains isolated from agricultural soil mulched with polyethylene film
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View abstract on PubMed
Summary
This summary is machine-generated.Fungi isolated from agricultural soils can degrade low-density polyethylene (LDPE) microplastic particles (MPPs). Fusarium and Penicillium strains show potential for bioremediation of plastic-contaminated soils.
Area Of Science
- Environmental Microbiology
- Bioremediation
- Polymer Science
Background
- Low-density polyethylene (LDPE) accumulation in agricultural soils presents ecological challenges due to its persistence.
- The microbial degradation of LDPE microplastic particles (MPPs) in soil environments is not well understood.
Purpose Of The Study
- To isolate and assess the capability of soil fungi to degrade LDPE MPPs.
- To identify specific fungal strains with significant LDPE degradation potential.
Main Methods
- Isolation of fungal strains from polyethylene-mulched agricultural soil.
- Incubation of LDPE MPPs with isolated fungal strains (Fusarium oxysporum, F. solani, Penicillium sp., P. olsonii) in mineral salt medium for 30 days.
- Analysis of LDPE degradation using Scanning Electron Microscopy (SEM) and enzyme activity assays.
Main Results
- Four fungal strains (F. oxysporum, F. solani, Penicillium sp., P. olsonii) demonstrated LDPE MPP degradation.
- Penicillium sp. showed the highest degradation rate at 5.25%.
- SEM confirmed fungal colonization and surface erosion of LDPE, with laccase and manganese peroxidase identified as key enzymes.
Conclusions
- Fusarium and Penicillium strains isolated from agricultural soils possess LDPE biodegradation capabilities.
- These fungi show promise as agents for the bioremediation of LDPE-contaminated agricultural soils.
- Further research is required to optimize fungal-based bioremediation strategies considering environmental factors and scalability.
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