Pavonia yellow mosaic begomovirus

Pavonia yellow mosaic begomovirus (Begomovirus pavoniaflavi) is a plant viral disease belonging to the Begomovirus genus within the Geminiviridae family. The pathogen is a single-stranded DNA virus that disrupts the host's physiological processes, leading to systemic infection.

The primary host for this virus is Pavonia flavi. As a begomovirus, it is part of a larger group of pathogens known for their economic impact on tropical and subtropical crops. Understanding the biology of this virus is essential for plant health management in regions where host plants are cultivated.

Symptoms of the infection typically include yellow mosaic patterns on leaves, leaf distortion, and stunted growth. The plant's vascular system becomes compromised, leading to decreased vigor and overall decline. These visual signs are critical indicators for early diagnosis and subsequent containment of the disease.

The transmission of this virus is primarily mediated by insect vectors, most notably the whitefly (Bemisia tabaci). The insects acquire the virus while feeding on the phloem of infected plants and subsequently transmit it to healthy plants during their feeding cycle, facilitating rapid spread within a population.

• Implementing strict integrated pest management (IPM) for whiteflies.
• Roguing and disposal of infected plant material to reduce viral inoculum.
• Using virus-free planting stock for propagation.
• Installing physical barriers like insect-proof nets in greenhouses.
• Monitoring surrounding vegetation that may act as reservoirs for the virus.