"Chloroviruses: Not Your Everyday Plant Virus" by James L. Van Etten and David D. Dunigan

Virology, Nebraska Center for

 

Document Type

Article

Date of this Version

2012

Citation

Published in Trends in Plant Science 17:1 (January 2012), pp. 1-8. DOI: 10.1016/j.tplants.2011.10.005

Comments

Copyright © 2012, Cell Press/Elsevier. Used by permission.

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.

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