Rapid Visual Detection Method for Barley Yellow Mosaic Virus Using Reverse Transcription Loop-Mediated Isothermal...

Area of Science:

• Plant Pathology
• Molecular Biology
• Biotechnology

Background:

• Barley yellow mosaic disease, caused by Barley yellow mosaic virus (BaYMV), poses a significant threat to barley production in Eurasia.
• Early detection of BaYMV is crucial for effective disease management and safeguarding food security.

Purpose of the Study:

• To develop a simple, rapid, specific, sensitive, and visual detection method for BaYMV.
• To establish a one-step reverse transcription loop-mediated isothermal amplification (RT-LAMP) assay for BaYMV detection.

Main Methods:

• Design of specific oligonucleotide primers for BaYMV coat protein gene amplification.
• Optimization of loop-mediated isothermal amplification (LAMP) conditions.
• Development and validation of a one-step reverse transcription LAMP (RT-LAMP) assay with visual detection using a colorimetric dye.

Main Results:

• The developed LAMP/RT-LAMP method demonstrated high specificity, detecting only BaYMV among eight tested plant viruses.
• The RT-LAMP assay was 10 times more sensitive than RT-PCR.
• Visual detection of positive BaYMV samples was achieved through a distinct color change.

Conclusions:

• The established visual RT-LAMP method is a promising tool for rapid and sensitive BaYMV detection.
• This assay can contribute to effective barley crop protection strategies and enhance food security.
• The method's simplicity and visual readout facilitate its application in various settings for disease surveillance.