Detection of Cassava Mosaic Geminiviruses Using Loop-Mediated Isothermal Amplification (LAMP)

Area of Science:

• Plant pathology
• Molecular diagnostics
• Agricultural science

Background:

• Cassava mosaic disease (CMD) poses a significant threat to food security in Sub-Saharan Africa.
• Early detection of CMD is essential for disease management and the trade of disease-free planting materials.

Purpose of the Study:

• To develop and present a rapid, cost-effective diagnostic tool for CMD.
• To enable early detection of the most prevalent CMD-causing viruses in Sub-Saharan Africa.

Main Methods:

• Real-time loop-mediated isothermal amplification (LAMP) assay.
• Crude and rapid DNA extraction method.
• Detection of African cassava mosaic virus (ACMV) and East African cassava mosaic virus (EACMV).

Main Results:

• The real-time LAMP assay detected ACMV and EACMV in under 30 minutes.
• The method operates at a single temperature (65°C) without requiring expensive equipment.
• The protocol bypasses the need for laborious high-quality DNA extraction.

Conclusions:

• This real-time LAMP protocol offers a rapid and accessible diagnostic solution for CMD.
• The method is suitable for resource-limited settings and field applications, aiding disease control efforts.