8/14/2023 0 Comments Bell pepper seedlings curlingComparison of the sequence of PepLCV with previously characterized begomoviruses shows it likely to have resulted from recombination between Papaya leaf curl virus and ChiLCV. PepLCV is related to Chilli leaf curl virus (ChiLCV), but it is a different species. There are closely related virus species including: PepLCV has been found in different countries from Africa, Asia, and Central and North America. This virus was first detected in India around 1960, and now it occurs worldwide. PepLCV is found in tropical and subtropical regions, and it significantly affects pepper production around the world. Treatments that are commonly used for this disease include insecticides, border crops, and growing varieties with genetic resistance. This virus can cause significant yield losses, and in the case of mixed infections or pests such as thrips or mites, losses may be as severe as 90–100%. Symptoms of PepLCV infection include severe stunting, flower bud abscission, reduction in pollen production, reduction of leaf size, upward cupping/curling of leaves, chlorosis on leaves and flowers, and reduction or elimination of fruit production. Transmission is most damaging when plants are infected at early growth stages, preventing the proper formation of flowers and pollen resulting in zero to low fruit production. PepLCV is transmitted by the insect vector Bemisia tabaci in a persistent-circulative nonpropagative manner. This virus has similar coat protein structure and genome organization to that of other begomoviruses such as TYLCV. The betasatellite associated with PepLCLV in Capsicum was identified as Chili leaf curl betasatellite (ChLCB). ![]() This virus consists of a single circular single-stranded (ss) DNA molecule (2744 nt in size), and betasatellite, which is a common distinction among viruses in the family Geminiviridae. Currently, a source of resistance to the virus has been identified in the Bhut Jolokia pepper. It is the focus of research trying to understand the genetic basis of resistance. PepLCV has been responsible for several epidemics and causes severe economic losses. The primary host for PepLCV are several Capsicum spp. This virus is transmitted by an insect vector from the family Aleyrodidae and order Hemiptera, the whitefly Bemisia tabaci. It can be found in tropical and subtropical regions such as Thailand and India, but has also been detected in countries such as the United States and Nigeria. PepLCV causes severe disease especially in pepper ( Capsicum spp.). ![]() Pepper leaf curl virus (PepLCV) is a DNA virus from the genus Begomovirus and the family Geminiviridae.
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