Carbon dots based cascading nanozymes mitigate phytotoxicity in lettuces under imidacloprid stress.

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  • Additional Information
    • Source:
      Publisher: Elsevier Applied Science Publishers Country of Publication: England NLM ID: 7702639 Publication Model: Print-Electronic Cited Medium: Internet ISSN: 1873-7072 (Electronic) Linking ISSN: 03088146 NLM ISO Abbreviation: Food Chem Subsets: MEDLINE
    • Publication Information:
      Publication: Barking : Elsevier Applied Science Publishers
      Original Publication: Barking, Eng., Applied Science Publishers.
    • Subject Terms:
      Neonicotinoids*/chemistry ; Nitro Compounds*/chemistry ; Oxidative Stress*/drug effects; Carbon/chemistry ; Superoxide Dismutase/metabolism ; Superoxide Dismutase/genetics ; Insecticides/chemistry ; Insecticides/pharmacology ; Hydrogen Peroxide/metabolism ; Hydrogen Peroxide/chemistry ; Quantum Dots/chemistry ; Peroxidase/metabolism ; Peroxidase/chemistry
    • Abstract:
      Improper pesticide use induces oxidative stress and disrupts detoxification systems in plants. We synthesized CDs with cascading nanozyme activities to mitigate phytotoxicity in lettuces under imidacloprid (IMI) stress. CDs exhibit superoxide dismutase-like (SOD-like) and peroxidase-like (POD-like) activities. Surface modifications and analysis of CDs, the SOD-like activity relies on the -NH 2 , -COOH, and -OH groups for binding superoxide anions (O 2 •- ), while POD-like activity depends on -COOH and CO groups, also, CO group provides π-system and the electron-deficient structure for electron transfer. Practically, under IMI stress, CDs strengthen multiple defense systems in lettuces, reducing levels of reactive oxygen toxicity (O 2 •- , H 2 O 2 , and MDA, by 26.77 %, 48.52 %, and 13.10 %, respectively). Meanwhile, CDs upregulate detoxification gene expression, resulting in a 42.74 % reduction in IMI residue in lettuces. Moreover, the acceptable daily intake of IMI in lettuces treated with CDs was less than 18.0 % of the reference dose, even at high-concentration IMI.
      Competing Interests: Declaration of competing interest The authors declare that they have no known competing financial interests or personal relationships that could have appeared to influence the work reported in this paper.
      (Copyright © 2024 Elsevier Ltd. All rights reserved.)
    • Contributed Indexing:
      Keywords: Antioxidant; Carbon dots (CDs); Detoxification; Food safety; Imidacloprid (IMI) stress; Lettuces
    • Accession Number:
      3BN7M937V8 (imidacloprid)
      0 (Neonicotinoids)
      0 (Nitro Compounds)
      7440-44-0 (Carbon)
      EC 1.15.1.1 (Superoxide Dismutase)
      0 (Insecticides)
      BBX060AN9V (Hydrogen Peroxide)
      EC 1.11.1.7 (Peroxidase)
    • Publication Date:
      Date Created: 20241109 Date Completed: 20241127 Latest Revision: 20241127
    • Publication Date:
      20241202
    • Accession Number:
      10.1016/j.foodchem.2024.141926
    • Accession Number:
      39520885