The brome mosaic virus-based recombination vector triggers a limited gene silencing response depending on the orientation of the inserted sequence

The brome mosaic virus-based recombination vector triggers a limited gene silencing response... In some RNA viruses (e.g. in brome mosaic virus, BMV), the same factor (intra- or intermolecular hybridization between viral RNA molecules) is capable of inducing two different processes: RNA silencing and RNA recombination. To determine whether there is some interplay between these two phenomena, we have examined if the BMV-based recombination vector containing a plant-genome-derived sequence can function as a gene-silencing vector. Surprisingly, we found that neither dsRNA forming during the replication of the BMV-based vector nor highly structured regions of its genome were effective RNAi triggers. Only mutants carrying a sequence complementary to the target mRNA functioned as gene silencing vectors and were steadily maintained in the infected plant. The constructs containing a sense sequence or inverted repeats did not induce gene silencing but instead were eliminated from the plant cells. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Archives of Virology Springer Journals

The brome mosaic virus-based recombination vector triggers a limited gene silencing response depending on the orientation of the inserted sequence

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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/s00705-009-0556-9
Publisher site
See Article on Publisher Site

Abstract

In some RNA viruses (e.g. in brome mosaic virus, BMV), the same factor (intra- or intermolecular hybridization between viral RNA molecules) is capable of inducing two different processes: RNA silencing and RNA recombination. To determine whether there is some interplay between these two phenomena, we have examined if the BMV-based recombination vector containing a plant-genome-derived sequence can function as a gene-silencing vector. Surprisingly, we found that neither dsRNA forming during the replication of the BMV-based vector nor highly structured regions of its genome were effective RNAi triggers. Only mutants carrying a sequence complementary to the target mRNA functioned as gene silencing vectors and were steadily maintained in the infected plant. The constructs containing a sense sequence or inverted repeats did not induce gene silencing but instead were eliminated from the plant cells.

Journal

Archives of VirologySpringer Journals

Published: Feb 1, 2010

References

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