Beet curlytopvirus is a pathogenic plantvirus of the family Geminiviridae, containing a single-stranded DNA. The family Geminiviridae contains 15 genera based on their host range, virus genome structure, and type of insect vector. BCTV is a curtovirus affecting hundreds of plants. As the name suggests, curlytopvirus of beanplants mimics the symptoms of moisture stress, a plant with curling leaves. In addition to curling leaves, beans with curlytop disease have foliage that becomes thickened and stiff with leaves that twist and curl upward. Curlytopvirus symptoms onbean Photo by: G.Q. Pelter.Young plants may be killed. Older plants are yellowed and dwarfed, with stunted pods. Leaves are thicker than normal and brittle in texture. The virus is also found in annual flowers and weeds. Stunted, yellow, misshapen, and curled symptoms of BCTV onbeanplant.Beet CurlyTopVirus (BCTV) is taxonomically a Curtovirus in the Geminiviridae family of plant pathogenic viruses. It is vectored, or carried by the beet leafhopper (BLH) insect. In August 2009, yellowing, upward curling of leaves, and stunted growth were observed on 15 to 40% of dry bean (Phaseolus vulgaris cv. Aluvori) plants in each of several experimental fields in Zacatecas, Mexico. Curlytop of beans, caused by. the Beet curlytopvirus (BCTV), is.There are some snap bean cultivars with resistance to curlytop4, and late planting, after major migrations of the leafhopper vector, can reduce the amount of disease on susceptible varieties.2. Many of these plants are susceptible to the curlytopvirus, and the spring brood of leafhoppers may carry the \'irus from them into cultivated ñelds of beets, beans, tomatoes, and other crops. Pinto bean (Phaseolus vulgaris L.), cultivar ouray, was inoculated with beet curlytopvirus (BCTV) at the crook neck seedling stage using beet leafhoppers (Circulifer tenellus Baker). After 7-10 days, primary leaves of each plant were rub-inoculated with one of two isolates of tobacco... This resistance is temperature-sensitive in sorne bean cultivars since it can be destroyed at high temperatures, regardless of plant age at the time of inoculation (25). Silbernagel (24) reports that the breeding lines, ARS-6BP-5 and ARS-5BP-7, are highly resistant to the curlytopvirus. Older plants have leaves with a mosaic pattern of light yellow-green and dark green areas along with puckering, rolling and downward curling. Seeds can become infected and carry the disease. Look for virus-resistant bean varieties. Beans with curlytopvirus become shorter, with thick... CurlyTop.-The virus causing curlytop in beans may also cause the.Planting resistant varieties, proper timing of planting dates, and treating the concentrated breeding areas with one pound of actual DDT per acre will aid in reducing curlytop damage. The curlytopvirus is the end of the plant. It can’t be healed. You will want to pull that plant up and start from scratch with a new plant. Pest Damage. Consider organic treatments or sprays specific to the pests you find on your plants. Beet CurlyTopVirus (BCTV) can infect a wide variety of host plants, including sugar beets, tomatoes, beans, spinach, and cannabis (hemp) plants. Members infect dicot plants and are transmitted by leafhoppers. In this genus, the most studied virus is beet curlytopvirus an economically important pathogen in North America and Iran with a wide host range (Chen and Gilbertson 2009).
