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RNA target sequences promote spreading of RNA silencing

Helena Van Houdt (UGent) , Annick Bleys (UGent) and Anna Depicker (UGent)
(2003) PLANT PHYSIOLOGY. 131(1). p.245-253
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Abstract
It is generally recognized that a silencing-inducing locus can efficiently reduce the expression of genes that give rise to transcripts partially homologous to those produced by the silencing-inducing locus (primary targets). Interestingly, the expression of genes that produce transcripts without homology to the silencing-inducing locus (secondary targets) can also be decreased dramatically via transitive RNA silencing. This phenomenon requires primary target RNAs that contain sequences homologous to secondary target RNAs. Sequences upstream from the region homologous to the silencing inducer in the primary target transcripts give rise to approximately 22-nucleotide small RNAs, coinciding with the region homologous to the secondary target. The presence of these small RNAs corresponds with reduced expression of the secondary target whose transcripts are not homologous to the silencing inducer. The data suggest that in transgenic plants, targets of RNA silencing are involved in the expansion of the pool of functional small interfering RNAs. Furthermore, methylation of target genes in sequences without homology to the initial silencing inducer indicates not only that RNA silencing can expand across target RNAs but also that methylation can spread along target genes.
Keywords
ACCUMULATION, MESSENGER-RNA, PLANTS, TRANSGENE, ANTISENSE RNA, GENETIC INTERFERENCE, VIRUS-RESISTANCE, DIRECTED DNA METHYLATION, DOUBLE-STRANDED-RNA, DE-NOVO METHYLATION

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Citation

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MLA
Van Houdt, Helena, et al. “RNA Target Sequences Promote Spreading of RNA Silencing.” PLANT PHYSIOLOGY, vol. 131, no. 1, 2003, pp. 245–53, doi:10.1104/pp.009407.
APA
Van Houdt, H., Bleys, A., & Depicker, A. (2003). RNA target sequences promote spreading of RNA silencing. PLANT PHYSIOLOGY, 131(1), 245–253. https://doi.org/10.1104/pp.009407
Chicago author-date
Van Houdt, Helena, Annick Bleys, and Anna Depicker. 2003. “RNA Target Sequences Promote Spreading of RNA Silencing.” PLANT PHYSIOLOGY 131 (1): 245–53. https://doi.org/10.1104/pp.009407.
Chicago author-date (all authors)
Van Houdt, Helena, Annick Bleys, and Anna Depicker. 2003. “RNA Target Sequences Promote Spreading of RNA Silencing.” PLANT PHYSIOLOGY 131 (1): 245–253. doi:10.1104/pp.009407.
Vancouver
1.
Van Houdt H, Bleys A, Depicker A. RNA target sequences promote spreading of RNA silencing. PLANT PHYSIOLOGY. 2003;131(1):245–53.
IEEE
[1]
H. Van Houdt, A. Bleys, and A. Depicker, “RNA target sequences promote spreading of RNA silencing,” PLANT PHYSIOLOGY, vol. 131, no. 1, pp. 245–253, 2003.
@article{214332,
  abstract     = {{It is generally recognized that a silencing-inducing locus can efficiently reduce the expression of genes that give rise to transcripts partially homologous to those produced by the silencing-inducing locus (primary targets). Interestingly, the expression of genes that produce transcripts without homology to the silencing-inducing locus (secondary targets) can also be decreased dramatically via transitive RNA silencing. This phenomenon requires primary target RNAs that contain sequences homologous to secondary target RNAs. Sequences upstream from the region homologous to the silencing inducer in the primary target transcripts give rise to approximately 22-nucleotide small RNAs, coinciding with the region homologous to the secondary target. The presence of these small RNAs corresponds with reduced expression of the secondary target whose transcripts are not homologous to the silencing inducer. The data suggest that in transgenic plants, targets of RNA silencing are involved in the expansion of the pool of functional small interfering RNAs. Furthermore, methylation of target genes in sequences without homology to the initial silencing inducer indicates not only that RNA silencing can expand across target RNAs but also that methylation can spread along target genes.}},
  author       = {{Van Houdt, Helena and Bleys, Annick and Depicker, Anna}},
  issn         = {{0032-0889}},
  journal      = {{PLANT PHYSIOLOGY}},
  keywords     = {{ACCUMULATION,MESSENGER-RNA,PLANTS,TRANSGENE,ANTISENSE RNA,GENETIC INTERFERENCE,VIRUS-RESISTANCE,DIRECTED DNA METHYLATION,DOUBLE-STRANDED-RNA,DE-NOVO METHYLATION}},
  language     = {{eng}},
  number       = {{1}},
  pages        = {{245--253}},
  title        = {{RNA target sequences promote spreading of RNA silencing}},
  url          = {{http://doi.org/10.1104/pp.009407}},
  volume       = {{131}},
  year         = {{2003}},
}

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