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Using a Pan-Viral Microarray Assay (Virochip) to Screen Clinical Samples for Viral Pathogens
Published on: April 27, 2011
Detection of viral infections by an oligonucleotide microarray
Miroslav Sip1, Dagmar Bystricka, Stanislav Kmoch
1Department of Laboratory Methods and Medical Technology, Faculty of Health and Social Studies, University of South Bohemia, J Boreckeho 27, 370 11 Ceske Budejovice, Czech Republic. sip@zsf.jcu.cz
Journal of Virological Methods
|January 27, 2010
Summary
DNA microarrays diagnose viral potato pathogens in field tests. This method rapidly detects mixed infections, confirming results from ELISA and RT-PCR, making it suitable for agricultural applications.
Area of Science:
- Agricultural science
- Molecular biology
- Plant pathology
Background:
- DNA expression microarrays are successful in biology and medicine.
- Microarray technology offers potential for agricultural molecular diagnostics.
Purpose of the Study:
- To apply DNA microarray diagnosis to agriculture.
- To test a DNA microarray for diagnosing major viral potato pathogens in field conditions.
Main Methods:
- Optimized RNA isolation for high sensitivity (3 microg total RNA).
- Reverse transcription of RNA using random hexamers.
- Hybridization of labeled cDNA to an oligonucleotide array.
Main Results:
- Microarray results confirmed viral pathogens detected by ELISA.
- Simultaneously identified other viruses in the same reaction, indicating mixed infections.
- Findings were verified by subsequent RT-PCR and sequencing.
Conclusions:
- DNA microarray diagnosis is appropriate for rapid detection of mixed viral infections in potatoes.
- This method provides a sensitive and comprehensive diagnostic tool for plant viruses.
- The technology has practical applications in agricultural disease management.
