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Updated: May 17, 2026

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Multiplex PCR to detect four different tomato-infecting pathogens.

Gabriela Alejandra Quintero-Vásquez1, María Luisa Bazán-Tejeda, Eva Martínez-Peñafiel

  • 1Genetics and Molecular Biology Department, Centro de Investigaciones y Estudios Avanzados del IPN, Av IPN 2508. Delegación Gustavo A, Madero, Federal District, México.

Folia Microbiologica
|November 9, 2012
PubMed
Summary

This study developed a multiplex PCR assay for simultaneous detection of key tomato pathogens: Clavibacter michiganensis subsp. michiganensis, Fusarium sp., Leveillula taurica, and begomoviruses. This method enables accurate identification in infected plants and seeds.

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Area of Science:

  • Plant Pathology
  • Molecular Biology
  • Agricultural Science

Background:

  • Tomato (Solanum lycopersicum) is susceptible to various infectious agents.
  • Accurate and simultaneous detection of multiple pathogens is crucial for effective disease management.

Purpose of the Study:

  • To develop a multiplex PCR assay for the simultaneous detection of Clavibacter michiganensis subsp. michiganensis, Fusarium sp., Leveillula taurica, and begomoviruses in tomato.
  • To optimize PCR conditions for reliable amplification from infected plant DNA.

Main Methods:

  • Design of specific primer sets targeting intergenic ribosomal RNA sequences and conserved regions.
  • Optimization of multiplex PCR conditions for single-tube amplification.
  • Validation of the assay using infected tomato plant samples.

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Main Results:

  • Successful development of a multiplex PCR assay capable of detecting four distinct tomato pathogens.
  • Specific PCR product sizes (296, 380, 457, and 731 bp) were achieved for each pathogen.
  • The assay accurately identified pathogens in infected tomato plants and seeds.

Conclusions:

  • The optimized multiplex PCR assay provides a reliable tool for the simultaneous detection of Clavibacter, Fusarium, Leveillula, and begomoviruses.
  • This assay can aid in early disease diagnosis and management strategies for tomato cultivation.
  • The method is applicable for analyzing both infected plant tissues and seeds.