1887

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Volume 82, Issue 6

Use of a vector based on in a whole plant assay to demonstrate nuclear targeting of Free

Abstract

(PSTVd) is a covalently closed circular RNA molecule of 359 nucleotides that replicates within the nucleus of host cells. To determine how this small, highly structured RNA enters the nucleus, we have developed a virus-based, whole plant assay that uses green fluorescent protein (GFP) as the reporter molecule. The coding region of GFP was interrupted by insertion of an intron derived from the intervening sequence 2 of the potato gene. A cDNA copy of the complete PSTVd genome was, in turn, embedded within the intron, and this construct was delivered into plants via a vector based on . The intron-containing GFP subgenomic RNA synthesized during virus infection cannot produce a functional GFP unless the RNA is imported into the nucleus, where the intron can be removed and the spliced RNA returned to the cytoplasm. The appearance of green fluorescence in leaf tissues inoculated with constructs containing a full-length PSTVd molecule embedded in the intron indicates that nuclear import and RNA splicing events did occur.

  • Received:
  • Accepted:
  • Published Online:
© Microbiology Society
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2001-06-01
2024-04-20
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Use of a vector based on Potato virus X in a whole plant assay to demonstrate nuclear targeting of Potato spindle tuber viroid
J. Gen. Virol. 82, 1491 (2001); https://doi.org/10.1099/0022-1317-82-6-1491
/content/journal/jgv/10.1099/0022-1317-82-6-1491
/content/journal/jgv/10.1099/0022-1317-82-6-1491
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