Related Experiment Video

Updated: Jul 16, 2025

High Content Screening Analysis to Evaluate the Toxicological Effects of Harmful and Potentially Harmful Constituents HPHC
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A detoxification pathway initiated by a nuclear receptor TcHR96h in Tetranychus cinnabarinus (Boisduval)

Xiang Wen1,2,3, Kaiyang Feng1,2,3, Juan Qin4

  • 1Key Laboratory of Entomology and Pest Control Engineering, College of Plant Protection, Southwest University, Chongqing, China.

Plos Genetics
|September 14, 2023
PubMed

Insights

This study shows that the Tetranychus cinnabarinus hormone receptor (HR) TcHR96h directly binds to cyflumetofen, initiating pesticide detoxification in arthropods. This discovery advances our understanding of xenobiotic metabolism and adaptation in agricultural pests.

Area of Science:

  • * Molecular Entomology
  • * Pest Management
  • * Biochemistry

Background:

  • * Understanding arthropod pesticide detoxification mechanisms is vital for effective pest control.
  • * The role of transcription factors in regulating detoxification genes after pesticide exposure is an emerging area of research.
  • * Direct interaction between transcription factors and xenobiotics remains largely uncharacterized.

Purpose of the Study:

  • * To investigate the mechanism of detoxification gene regulation in arthropods following pesticide exposure.
  • * To determine if transcription factors directly interact with xenobiotic compounds.
  • * To elucidate the role of Tetranychus cinnabarinus hormone receptor (HR) TcHR96h in cyflumetofen resistance.

Main Methods:

  • * Analysis of nuclear translocation of TcHR96h upon cyflumetofen exposure.
  • * Utilizing proteomic assays to quantify interactions between TcHR96h and small molecules.
  • * Investigating the regulation of the TcGSTm02 detoxification gene by TcHR96h.

Main Results:

  • * TcHR96h was identified as a nuclear hormone receptor regulating the overexpression of the TcGSTm02 detoxification gene.
  • * Nuclear translocation of TcHR96h increased significantly after cyflumetofen exposure, indicating direct binding.
  • * Proteomic assays confirmed the direct binding interaction between TcHR96h and cyflumetofen.

Conclusions:

  • * A model for xenobiotic detoxification initiation in a polyphagous agricultural pest, mediated by direct ligand-receptor binding, is proposed.
  • * These findings enhance the understanding of xenobiotic detoxification and metabolism in arthropods.
  • * The study provides crucial insights into the adaptation mechanisms of polyphagous herbivores to pesticide exposure.

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