Figure 1 Baculovirus occlusion bodies, virions, and nucleocapsids. (Upper left) The structures of occlusion bodies from baculoviruses in the genera Nucleopolyhedrovirus (NPV) and Granulovirus (GV) are illustrated. Virions embedded in Nucleopolyhedrovirus occlusion bodies may contain multiple nucleocapsids (MNPV) or single nucleocapsids (SNPV). (Upper right) The two baculovirus virion phenotypes are illustrated as diagrams with shared and phenotype-specific components (Redrawn from Blissard, 1996). (Bottom) Transmission electron micrographs of occlusion bodies (MNPV, SNPV, and GV), virion phenotypes (BV and ODV), and nucleocapsids (NC). Nucleopolyhedrovirus occlusion bodies of the MNPV (Autographa californica MNPV, top left) and SNPV (Trichoplusia ni SNPV, top middle) types are compared to Granulovirus occlusion bodies (Estigmine acrea GV, top right). Transmission electron micrographs of virions of the BV (Lymantria dispar MNPV, bottom left) and ODV (Autographa californica MNPV, bottom center) phenotypes are shown beside negatively stained nucleocapsids (Autographa californica MNPV, bottom right). Electron micrographs courtesy of J.R. Adams (LdMNPV BV virion) and R. Granados (all others).
Figure 2 The covalently closed circular Autographa californica multiple nucleopolyhedrovirus (AcMNPV) genome is illustrated with locations and orientations of known and predicted open reading frames (arrows). Restriction maps for EcoRI and HindIII are indicated by letters on outer and inner rings, respectively. Locations of homologous repeat (hr) sequences are indicated on the inside of the circle as small filled boxes. Map units are indicated on the inside of the map (1 map unit = 1.339 kbp). (Redrawn from Ayres, Howard, Kuzio, Lopez-Ferber and Possee, 1994).
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