Tomato brown rugose fruit virus

The causal agent of this disease is Tobamovirus fructirugosum, commonly referred to as Tomato brown rugose fruit virus (ToBRFV). It is a highly resilient plant pathogen that belongs to the Tobamovirus genus, characterized by its extreme stability and ease of transmission.

The primary hosts of this virus are tomatoes and peppers. It poses a significant challenge to global agriculture, particularly in greenhouse production systems where environmental conditions favor the rapid spread of the pathogen through high-density planting and frequent human interaction with the plants.

Symptoms of infection include severe mosaic patterns on leaves, leaf yellowing, and malformation. The most diagnostic signs appear on the fruits, which develop rough brown patches, necrotic lesions, and deformations, rendering the harvest unmarketable and of poor quality.

Transmission occurs primarily through mechanical contact. Tools, clothing, hands, and even contaminated irrigation water or soil can harbor the virus. Because it is highly stable outside of the host, it can persist on surfaces and equipment for several months, making sanitation critical.

• Strict sanitation protocols for tools and greenhouse facilities.
• Implementation of mandatory footbaths and hand sanitizing stations.
• Use of ToBRFV-resistant tomato cultivars.
• Immediate removal and destruction of infected plants and surrounding debris.
• Rigorous quarantine and seed health certification programs.

The economic impact of this disease is severe, as it leads to significant yield losses and reduced fruit quality. Since there are no curative chemical treatments for viral diseases in plants, the strategy is focused solely on integrated pest management and strict biosecurity to prevent the introduction and spread of the virus.