Schematic representation of species Chinese yam necrotic mosaic virus (CYNMV), genus Macluravirus genome, family Potyviridae. The 10 functional proteins represented are HC-Pro: helper component protease (gene silencing and vector transmission), P3: third protein (virus replication), 7K, CI: cylindrical inclusion protein (virus movement and replication), 9K, VPg: viral genome-linked protein (viral replication), NIa: major protease of small nuclear inclusion protein (polyprotein processing), NIb: large nuclear inclusion protein (RNA-dependent RNA polymerase), CP: coat protein (virus movement and virion formation) and PIPO: pretty-interesting-potyvirus-ORF (virus movement).