RNA-based antiviral offers strong defence against deadly agri virus, Pg20

Key Highlights:

• RNA-based antiviral treatment developed to combat Cucumber Mosaic Virus (CMV), a major plant virus affecting over 1,200 species.
  • CMV causes up to 25-30% yield losses in banana plantations in India; infection rates in pumpkins, cucumbers, and melons can reach 70%.
  • Researchers used a method called RNA silencing, introducing engineered double-stranded RNA (dsRNA) enriched with small RNA (siRNA) for targeted protection.
  • SIGS (Spray-Induced Gene Silencing) is being developed for real-world applications to enable easy field deployment.
  • Study demonstrated high effectiveness against virus transmission and infection without genetic modification.

Detailed Insights:

• Advantages of RNA-based Solutions:
  • More targeted, environmentally friendly, and avoids the need for genetically modified organisms (GMOs).
    • Boosts the plant's natural immune response, increasing resilience against multiple virus strains.
  • Mechanism:
    • Virus-specific siRNAs introduced into plants to block virus replication and spread.
  • Future Steps:
    • Focus on making RNA sprays durable against external conditions like sunlight, rain, and soil microbes.
      • Develop spray-based solutions suitable for large-scale agricultural use.

Significance:

• A breakthrough in non-GMO, sustainable crop protection technologies.
  • Can play a vital role in reducing crop losses, enhancing food security, and boosting farm incomes.
  • Important innovation amidst growing concerns over climate-resilient agriculture and environmentally safe farming practices.

Mains Mock Question:

"Discuss the potential of RNA-based technologies in addressing crop loss due to viral diseases. How can they contribute to sustainable agriculture and food security?"