Genomics-led Insight into Potyvirus Family, Prevalence and Management

Author: Himangana Das, Oliva Saha, Nasrin Rahman, Munmi Phukon and Ratna Kalita

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Abstract

Potyvirus is the largest genera with more than 200 viral species in Potyviridae family. Potyvirus is a major aphid-transmitted pathogen of potato and other solanaceous crops. Potyvirus infection causes severe yield loss in many crops. Potato virus Y (PVY) Potyvirus is the most studied virus that affects potato cultivation worldwide. PVY has infected around 495 plant species of 72 genera in 31 families. PVY is an RNA virus which mutate in higher rate. The complexity of the PVY strains is differentiated by their reactions against resistant genes and genome organization in potato. Mutation, recombination, migration, natural selection and genetic drift give birth to a pool of viruses which then are adapted to new niches. Aphid control and introduction of resistant cultivars is an eco-friendly way of maintaining the viral diseases. An insight into PVY genetic structure, variability and evolutionary changes will help to strategize PVY control. This article discusses Potyvirus genetic complex

Keywords

Potyvirus family, Potyviral genome, Potato virus Y, Aphids, Polyprotein