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Related Experiment Video

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A User-friendly and Powerful R Analysis of Large-scale Datasets
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An Eco- and User-Friendly Herbicide.

Xiangjun Zhang1, Qiaoxian Huang1, Zhe-Ze Zhao2

  • 1State Key Laboratory of Quality Research in Chinese Medicine, Institute of Chinese Medical Sciences , University of Macau , Taipa , Macau 999078 , China.

Journal of Agricultural and Food Chemistry
|July 4, 2019
PubMed
Summary

This study introduces a new eco-friendly herbicide formulation, PQ@CB[7], which significantly reduces the toxicity of paraquat (PQ) to wildlife and humans while maintaining its effectiveness in agriculture.

Keywords:
cucurbit[7]urilfriendly herbicideparaquatsupramolecular chemistry

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Area of Science:

  • Environmental Chemistry
  • Toxicology
  • Green Chemistry

Background:

  • Pesticide use, particularly paraquat (PQ), poses significant risks to ecosystems and human health.
  • There is a critical need for safer, environmentally friendly alternatives to conventional herbicides.

Purpose of the Study:

  • To develop a supramolecular formulation of paraquat (PQ@CB[7]) to mitigate its toxicity.
  • To evaluate the eco-friendliness and user-safety of the PQ@CB[7] formulation.

Main Methods:

  • A supramolecular complex (PQ@CB[7]) was synthesized by mixing paraquat (PQ) with cucurbit[7]uril (CB[7]).
  • The formulation's effects on cellular uptake, reactive oxygen species (ROS) generation, and apoptosis were assessed in cellular models.
  • Toxicity and efficacy were evaluated in wildtype zebrafish and mouse models, alongside herbicidal activity tests.

Main Results:

  • PQ@CB[7] significantly inhibited PQ's cellular uptake, ROS generation, and apoptosis, increasing cellular viability.
  • In vivo studies showed reduced hepatotoxicity and increased survival rates in zebrafish and mice treated with PQ@CB[7] compared to free PQ.
  • The PQ@CB[7] formulation retained herbicidal efficacy equivalent to that of free PQ.

Conclusions:

  • The PQ@CB[7] supramolecular formulation offers a promising eco- and user-friendly herbicide.
  • This innovation presents a practical solution for sustainable agriculture, addressing the long-standing need for safer pest control methods.