Cyclamen mosaic virus

Cyclamen mosaic virus (Sobemovirus cycmv) is a viral pathogen classified within the Sobemovirus genus. This plant virus primarily infects ornamental plants, with Cyclamen persicum being its most well-known host. Due to its stability and high rate of transmission in intensive cropping systems, it remains a significant challenge for greenhouse producers worldwide.

The virus acts as an obligate parasite, negatively impacting the physiological development of the host plant. The primary host range includes various cultivars of cyclamen. The presence of the virus disrupts plant metabolism, which eventually leads to a significant decline in plant health and, consequently, a reduction in the marketability of the flowers.

Symptoms of the disease are characterized by distinct chlorotic spots, mottling, and mosaic patterns on the foliage. Infected plants often show stunted growth and morphological changes, such as leaf crinkling or twisting. In the flowering stage, the inflorescences may become distorted, and flower petals may display color-breaking or streaking, which deviates from the normal aesthetic expectations.

The transmission of Sobemovirus cycmv occurs largely through mechanical inoculation. Common pathways include:

• Use of contaminated pruning tools or cutting implements.
• Physical contact between infected sap and healthy tissue during routine handling.
• Contamination via hands or surfaces during potting and transplanting processes.

Control strategies for this viral disease are strictly preventive, as there are no curative antiviral treatments for infected plants. Effective management requires rigorous sanitary practices, including the sterilization of tools and greenhouse benches. Implementing a strict quarantine program for new stock and the immediate culling of any symptomatic plants are critical steps to prevent the spread of the virus within the nursery.