PMID: 9445008Jan 28, 1998Paper

Silencing homologous RNA recombination hot spots with GC-rich sequences in brome mosaic virus

Journal of Virology
P D Nagy, J J Bujarski

Abstract

It has been observed that AU-rich sequences form homologous recombination hot spots in brome mosaic virus (BMV), a tripartite positive-stranded RNA virus of plants (P. D. Nagy and J. J. Bujarski, J. Virol. 71:3799-3810, 1997). To study the effect of GC-rich sequences on the recombination hot spots, we inserted 30-nucleotide-long GC-rich sequences downstream of AU-rich homologous recombination hot spot regions in parental BMV RNAs (RNA2 and RNA3). Although these insertions doubled the length of sequence identity in RNA2 and RNA3, the incidence of homologous RNA2 and RNA3 recombination was reduced markedly. Four different, both highly structured and nonstructured downstream GC-rich sequences had a similar "homologous recombination silencing" effect on the nearby hot spots. The GC-rich sequence-mediated recombination silencing mapped to RNA2, as it was observed when the GC-rich sequence was inserted at downstream locations in both RNA2 and RNA3 or only in the RNA2 component. On the contrary, when the downstream GC-rich sequence was present only in the RNA3 component, it increased the incidence of homologous recombination. In addition, upstream insertions of similar GC-rich sequences increased the incidence of homologous recombinat...Continue Reading

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Citations

Apr 20, 2001·Proceedings of the National Academy of Sciences of the United States of America·M J Kim, C Kao
Nov 20, 2002·Journal of Virology·R C L OlsthoornJ J Bujarski
Dec 1, 2009·Viruses·Kunj B Pathak, Peter D Nagy
Sep 28, 2006·Nucleic Acids Research·Heather A BairdMatteo Negroni
Nov 26, 1999·The Journal of General Virology·M Worobey, E C Holmes
Aug 21, 2009·The Journal of General Virology·Xiaojun HuJim H Lorenzen
Mar 1, 2000·Molecular Plant Pathology·C C Kao, K Sivakumaran
May 3, 2011·Annual Review of Phytopathology·Joanna Sztuba-SolińskaJozef J Bujarski
Aug 30, 2018·The Journal of General Virology·Kirsten Bentley, David J Evans

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