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Gene silencing by RNA interference in the ectoparasitic mite, Psoroptes ovis

Edward J Marr1,2, Harry W Wright1, Neil D Sargison3

  • 1Moredun Research Institute, Pentlands Science Park, Bush Loan, Penicuik, Edinburgh, EH26 0PZ, Scotland, UK.

Veterinary Research
|November 2, 2018
PubMed

Insights

Researchers successfully demonstrated RNA interference (RNAi) in the sheep scab mite, Psoroptes ovis. This breakthrough enables gene silencing for developing novel control strategies against this economically significant ectoparasite.

Area of Science:

  • Molecular Biology
  • Parasitology
  • Genomics

Background:

  • Psoroptes ovis is an ectoparasitic mite causing significant economic losses in livestock.
  • The RNA interference (RNAi) pathway is a powerful tool for gene silencing.
  • Understanding the RNAi pathway in P. ovis is crucial for developing novel control methods.

Purpose of the Study:

  • To investigate the presence and functionality of the RNA interference (RNAi) pathway in Psoroptes ovis.
  • To establish a method for gene silencing in P. ovis using RNAi.
  • To identify potential targets for controlling P. ovis populations.

Main Methods:

  • Bioinformatic analysis of the P. ovis genome to identify RNAi pathway components.
  • Development of a non-invasive double-stranded RNA (dsRNA) delivery method.
  • Quantification of gene transcript levels following dsRNA treatment.

Main Results:

  • Homologues of key RNAi pathway genes were identified in P. ovis.
  • Successful gene silencing was achieved in P. ovis using a novel immersion method.
  • Significant reduction in transcript levels for Pso o 2, PoGST-mu1, and Poβtub genes was observed.

Conclusions:

  • This study provides the first demonstration of RNA interference in Psoroptes ovis.
  • The developed RNAi method offers a versatile tool for functional genomics in P. ovis.
  • This research paves the way for discovering new genetic targets for P. ovis control.

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