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Alphavirus Transducing System: Tools for Visualizing Infection in Mosquito Vectors
07:12

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Published on: November 24, 2010

Insect vector transmission assays.

Domenico Bosco1, Rosemarie Tedeschi

  • 1DIVAPRA-Entomologia e Zoologia applicate all'Ambiente Carlo Vidano, Università degli Studi di Torino, Grugliasco, Italy. domenico.bosco@unito.it

Methods in Molecular Biology (Clifton, N.J.)
|September 19, 2012
PubMed
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Screening for phytoplasma vectors is crucial for managing crop diseases. Transmission assays are essential to confirm an insect

Area of Science:

  • Plant Pathology
  • Entomology
  • Microbiology

Background:

  • Phytoplasmas are plant pathogens transmitted by phloem-feeding Hemiptera (Homoptera).
  • Transmission involves acquisition, a latent period, and inoculation by specific insect vectors.
  • Over 90 vector species are known, but many remain undiscovered, hindering disease control.

Purpose of the Study:

  • To emphasize the importance of vector screening for phytoplasma-associated crop diseases.
  • To highlight the necessity of transmission assays for vector confirmation.
  • To discuss methodologies for identifying and confirming phytoplasma vectors.

Main Methods:

  • Transmission assays involve acquisition, latency, and inoculation phases.
  • Experiments utilize phytoplasma-free insect colonies or field collections.

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  • Artificial feeding systems with Parafilm® and PCR detection in feeding media are employed.

    • Main Results:

    • Detection of phytoplasmas in insects does not confirm vector status.
    • Transmission assays provide conclusive evidence of vector capability.
    • Diverse techniques are used based on vector biology (planthoppers, leafhoppers, psyllids).

    Conclusions:

    • Vector screening and confirmation through transmission assays are vital for effective phytoplasma disease management.
    • Understanding vector roles is critical for developing targeted control strategies.
    • Standardized transmission assays are essential for accurate vector identification.