Carnation mottle virus, also known as CMV, is a pathogenic plant virus that affects carnations (Dianthus caryophyllus) and other members of the Caryophyllaceae family. It has a wide distribution globally and is responsible for causing significant damage to commercial carnation crops.
CMV belongs to the genus Tombusvirus and family Tombusviridae. It is transmitted through grafting, mechanical means, and primarily by aphids, specifically the Myzus persicae species. Once the virus infects a carnation plant, it spreads systemically throughout the plant's tissues, leading to visible symptoms that include mottled or chlorotic patterns on leaves, distorted growth, necrotic spots, stunted development, and reduced flower quality and quantity.
The presence of CMV in carnation crops poses significant economic consequences, as infected plants experience reduced market value due to the negative visual impact caused by the symptoms. Additionally, the virus can persist in fields for several years, mainly through infected plant debris, leading to recurrent infections and losses in subsequent seasons.
Control measures for CMV involve the use of disease-free planting materials, strict sanitation practices to eliminate infected plant debris, and management of aphid populations through insecticides or biological control methods. Additionally, some cultivars with resistance or tolerance to CMV have been developed to minimize the impact of the virus on carnation production.
In summary, Carnation mottle virus is a plant pathogen that affects carnations, causing mottled patterns, stunted growth, and reduced flower quality. It is primarily transmitted by aphids and can persist in fields, leading to recurrent infections. Effective management strategies play a crucial role in preventing and mitigating the impact of CMV on commercial carnation crops.
