Viroid RNA is accepted as a template for in vitro transcription by DNA-dependent DNA polymerase I and RNA polymerase from Escherichia coli

Biosci Rep. 1982 Nov;2(11):929-39. doi: 10.1007/BF01114900.


The RNA genome of potato spindle tuber viroid (PSTV) is transcribed in vitro into complementary DNA and RNA by DNA-dependent DNA polymerase I and RNA polymerase, respectively, from Escherichia coli. In vitro synthesis of complementary RNA produces distinct transcripts larger than unit length thus reflecting the in vivo mechanism of viroid replication. The influence of varying experimental conditions on the transcription process is studied; actinomycin D is found to drastically reduce complementary RNA synthesis from the PSTV RNA template by RNA polymerase.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • DNA Polymerase I / metabolism*
  • DNA, Viral / genetics*
  • DNA-Directed DNA Polymerase / metabolism*
  • DNA-Directed RNA Polymerases / metabolism*
  • Escherichia coli / enzymology*
  • Plant Viruses / genetics*
  • Templates, Genetic
  • Transcription, Genetic
  • Viroids / genetics*


  • DNA, Viral
  • DNA Polymerase I
  • DNA-Directed RNA Polymerases
  • DNA-Directed DNA Polymerase