Duplornaviruses

Duplornaviricota is a major taxonomic group of double-stranded RNA viruses that act as significant plant pathogens. In agricultural practice, these viruses are responsible for numerous systemic diseases that negatively impact crop productivity and quality by interfering with the vital physiological processes of the plant.

A broad range of crops, including horticultural vegetables, cereals, and orchard fruits, are susceptible to these infections. The viruses utilize host cell machinery to replicate, which leads to metabolic stress and structural damage to plant tissues, ultimately reducing the overall yield potential of the infected fields.

Symptoms of Duplornaviricota infection typically include mosaic patterns on foliage, chlorosis, leaf curling, and severe stunted growth. In more advanced stages, plants may show necrosis or fruit deformations, which significantly lowers the marketability and nutritional value of the harvested agricultural products.

The spread of these viruses is primarily facilitated by insect vectors, such as aphids, whiteflies, and thrips, as well as through mechanical transmission via contaminated tools or infected seeds. Environmental conditions, specifically warm temperatures and sufficient humidity, accelerate the life cycle of insect vectors, thereby promoting the rapid dissemination of the virus.

Integrated pest management (IPM) is crucial for controlling viral outbreaks. This includes the use of virus-free planting stock, the implementation of rigorous sanitation practices, and effective chemical or biological control of insect vectors. Prevention remains the most important tool, as curative treatments for viral plant diseases are currently unavailable.

• Use of certified pathogen-free seeds
• Regular monitoring and control of insect vectors
• Systematic removal and destruction of infected plant material
• Sanitization of agricultural equipment and tools
• Implementation of crop rotation and spatial isolation