Pepper leaf curl virus

Begomovirus capsicumbangladeschense is a pathogenic virus belonging to the genus Begomovirus, responsible for severe viral diseases in various crops. It is categorized as an insect-transmitted plant virus that interferes with the host's genetic and physiological processes, ultimately leading to systemic infection and structural impairment of the plant tissues.

The primary host for this pathogen is the bell pepper (Capsicum annuum). Furthermore, the virus is known to affect other members of the Solanaceae family, such as tomatoes and eggplants. Various weed species also serve as vital host reservoirs, allowing the virus to persist in the field environment between growing seasons.

Symptoms of the infection typically manifest as:

• severe twisting and curling of leaves;
• stunted growth and systemic dwarfing of the plant;
• yellowing (chlorosis) or mosaic patterns on foliage;
• reduced flower production and premature fruit shedding;
• thickening and brittleness of leaf blades.

The development and transmission of the virus are strongly correlated with environmental conditions that favor the proliferation of the whitefly Bemisia tabaci, the primary vector. High temperatures and humidity facilitate rapid population growth of these insects, leading to widespread transmission of the virus across agricultural plots, especially in tropical and subtropical regions.

The impact of this virus on agricultural yield is profound, often resulting in complete crop failure and significant financial losses. Since there is no cure for viral infections in plants, management must be focused on proactive strategies, including the use of fine-mesh greenhouse netting, rigorous weed control, application of systemic insecticides to manage whitefly populations, and the cultivation of virus-resistant varieties.