title: Chloroviruses: not your everyday plant virus.
abstract: Viruses infecting higher plants are among the smallest viruses known and typically have four to ten protein-encoding genes. By contrast, many viruses that infect algae (classified in the virus family Phycodnaviridae) are among the largest viruses found to date and have up to 600 protein-encoding genes. This brief review focuses on one group of plaque-forming phycodnaviruses that infect unicellular chlorella-like green algae. The prototype chlorovirus PBCV-1 has more than 400 protein-encoding genes and 11 tRNA genes. About 40% of the PBCV-1 encoded proteins resemble proteins of known function including many that are completely unexpected for a virus. In many respects, chlorovirus infection resembles bacterial infection by tailed bacteriophages.
authors.affiliation: Department of Plant Pathology and Nebraska Center for Virology, University of Nebraska, Lincoln, NE 68583-0900, USA. jvanetten@unlnotes.unl.edu
authors.forename: James L
authors.initials: JL
authors.lastname: Van Etten
authors.forename: David D
authors.initials: DD
authors.lastname: Dunigan
mesh_terms: D005075:Biological Evolution; D000460:Chlorophyta / Q000821:virology*; D016679:Genome, Viral / Q000235:genetics*; D017862:Phycodnaviridae / Q000235:genetics* / Q000254:growth & development / Q000648:ultrastructure; D010942:Plant Viruses / Q000235:genetics / Q000254:growth & development / Q000648:ultrastructure; D014764:Viral Proteins / Q000235:genetics
chemical_list: D014764:Viral Proteins
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