Polerovirus AEYV

The causative agent is a virus from the Polerovirus genus, which belongs to the luteovirid group. This pathogen primarily invades the plant vascular system, specifically the phloem, causing a systemic infection. The disease type is characterized by chronic metabolic impairment and severe physiological stress within the host plant.

The virus affects a wide range of agricultural crops, particularly those in the Solanaceae and Brassicaceae families. Infection is usually permanent, leading to cumulative damage throughout the growing season. Early-stage infestation is particularly devastating to crop establishment and overall productivity.

Key symptoms include severe chlorosis, often appearing as yellowing of the leaf margins or interveinal yellowing. Affected plants exhibit stunted growth, reduced leaf size, and significant curling or thickening of the leaves. In many cases, the entire plant architecture becomes abnormal, significantly hindering its photosynthetic capacity.

The spread of the virus in the field depends entirely on insect vectors, primarily aphids. These insects acquire the virus while feeding on infected plants and transmit it to healthy ones during subsequent feeding sessions. Weather conditions such as warm, dry spells favor higher aphid activity and faster viral dispersal across plantations.

Controlling this disease requires an integrated pest management approach. Key measures include the use of virus-free planting stock, the implementation of cultural practices that reduce weed reservoirs, and rigorous control of aphid populations using systemic insecticides. Proactive monitoring and early intervention are essential for preserving the yield potential.