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Biochar alleviated the toxic effects of PVC microplastic in a soil-plant system by upregulating soil enzyme activities and microbial abundance

Environmental Pollution, ISSN: 0269-7491, Vol: 332, Page: 121810
2023
  • 37
    Citations
  • 0
    Usage
  • 63
    Captures
  • 0
    Mentions
  • 15
    Social Media
Metric Options:   Counts1 Year3 Year

Metrics Details

  • Citations
    37
  • Captures
    63
  • Social Media
    15
    • Shares, Likes & Comments
      15
      • Facebook
        15

Article Description

Plastics have become an emerging pollutant threatening the sustainability of agroecosystems and global food security. Biochar, a pro-ecosystem/negative carbon emission technology can be exploited as a circular approach for the conservation of plastics contaminated agricultural soils. However, relatively few studies have focused on the effects of biochar on plant growth and soil biochemical properties in a microplastic contaminated soil. This study investigated the effects of a cotton stalk ( Gossypium hirsutum L.) biochar on plant growth, soil microbes, and enzyme activity in PVC microplastic (PVC-MPs) contaminated soil. Biochar amendment increased shoot dry matter production in PVC-MPs contaminated soil. However, PVC-MPs alone significantly reduced the soil urease and dehydrogenase activity, soil organic and microbial biomass carbon, bacterial/fungal community percentage, and their abundance (16S rRNA and 18S rRNA genes, respectively). Interestingly, biochar amendment with PVC-MPs significantly alleviated the hazardous effects. Principal component and redundancy analysis of the soil properties, bacterial 16S rRNA genes, and fungal ITS in the biochar-amended PVC-MPs treatments revealed that the observed traits formed an obvious cluster compared to non-biochar treatments. To sum up, this study indicated that PVC-MPs contamination was not benign, while biochar shielded the hazardous effects and sustained soil microbial functionality.

Bibliographic Details

Khalid, Attia Rubab; Shah, Tariq; Asad, Muhammad; Ali, Ahmad; Samee, Eisha; Adnan, Fazal; Bhatti, Muhammad Faraz; Marhan, Sven; Kammann, Claudia I; Haider, Ghulam

Elsevier BV

Pharmacology, Toxicology and Pharmaceutics; Environmental Science

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