Begomoviruses and Their Satellites Occurring in India: Distribution, Diversity and Pathogenesis

摘要: The begomoviruses (genus Begomovirus, family Geminiviridae) constitute the largest group of plant viruses causing devastating crop diseases in India. About 16% geminiviruses recorded worldwide occur Begomovirus associated disease was India as early 1924. During 1980s, begomovirus and vector whitefly, Bemisia tabaci emerged serious problems many vegetable pulse crops. molecular characterisation studies on began during late 1980s last decade, a large number were discovered such mosaic, yellow vein mosaic leaf curl numerous crops wild plants. Currently, 322 species have been officially recognised all over world, which about 82 are known to Indian subcontinent represents one important centres for origin diversity. In this chapter, research work identification characterization diverse is presented. Geographic distribution, phylogenetic relationship, infectivities cloned genome components, recombination, replication events, suppression RNAi silencing, viral gene funtions pathogenicity determinants association satellites their role development with reference discussed.