Inducible viral inoculation system with cultured plant cells facilitates a biochemical approach for virus-induced RNA silencing

Inducible viral inoculation system with cultured plant cells facilitates a biochemical approach... An inducible virus infection system was demonstrated to be an efficient protein expression system for inducing synchronous virus vector multiplication in suspension-cultured plant cells. A GFP-tagged tomato mosaic virus (ToMV-GFP) derivative that has a defect in its 130 K protein, a silencing suppressor of ToMV, was synchronously infected to tobacco BY2 cultured cells using this system. In the infection-induced cells, viral RNA was degraded rapidly, and a cytosol extract prepared from the infected cells showed RNA degradation activity specific for ToMV- or GFP-related sequences. In lysate prepared from cells infected by ToMV-GFP carrying the wild-type 130 K protein, sequence-specific RNA degradation activity was suppressed, although siRNA derived from the virus was generated. Furthermore, the 130 K protein interfered with 3′-end methylation of siRNA. The inducible virus infection system may provide a method for biochemical analysis of antiviral RNA silencing and silencing suppression by ToMV. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Virology Springer Journals

Inducible viral inoculation system with cultured plant cells facilitates a biochemical approach for virus-induced RNA silencing

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Publisher
Springer Vienna
Copyright
Copyright © 2010 by Springer-Verlag
Subject
Biomedicine; Infectious Diseases; Medical Microbiology ; Virology
ISSN
0304-8608
eISSN
1432-8798
D.O.I.
10.1007/s00705-009-0585-4
Publisher site
See Article on Publisher Site

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