Part 1 Disease: new virus and virus-like diseases of sugarcane - an overview; sugarcane yellow leaf syndrome - its history and current concepts; sugarcane steak mosaic tritmovirus. Part 2 Taxonomy: current concepts of the taxonomy and variation of sugarcane infecting potyviruses; sugarcane white leaf and sugarcane grassy shoot diseases - biology and taxonomic characterization of the associated phytoplasmas; current status of sugarcane mosaic (SCMV) subgroup potyviruses causing sorghum red stripe in India. Part 3 Diagnoses: molecular characterization of sugarcane white leaf phytoplasmas; molecular-based diagnosis of sugarcane virus diseases; detection of sugarcane viral diseases by different serological techniques; serodiagnosis of phytoplasmas causing grassy shoot disease in sugarcane. Part 4 Characterization: an analysis of the serological relationships among SCMV, MDMV, JGMV and SrMV potyviruses; recent studies on white leaf and GSD phytoplasmas of sugarcane. Part 5 Purification: developments in the purification of sugarcane mosaic potyvirus. Part 6 Transmission: vectors of viruses and phytoplasmas diseases of sugarcane - an overview. Part 7 Host pathogen interaction: GSD-host pathogen interaction and metabolic alterations during pathogenesis. Part 8 Management: genetic engineering for virus-resistance in sugarcane.