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Production and Transport of the Silencing Signal in Transgenic and Virus-Infected Plant Systems

  • Thomas HohnEmail author
  • Rashid Akbergenov
  • Mikhail M. Pooggin
Chapter
Part of the Plant Cell Monographs book series (CELLMONO, volume 7)

Abstract

In plants, RNA interference constitutes an important defense mechanism against viruses, transposons, and transgenes. Viruses, on the other hand, use suppressors to counteract silencing. In contrast to mammalian systems, silencing in plants spreads systemically through the whole organism. Since also viruses spread and consequently produce suppressors systemically, a race between silencing and virus replication occurs. Apparently, successful viruses win the race, but only until they reach the tissue around the meristem. There, the silencing mechanism is most capable by efficiently amplifying the silencing signal, bona fide 21-nt siRNA, leading to the well-known phenomenon of meristem exclusion.

Keywords

Transcriptional Gene Silence Silence Suppressor Silence Signal African Cassava Mosaic Virus Mungbean Yellow Mosaic Virus 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2007

Authors and Affiliations

  • Thomas Hohn
    • 1
    • 2
    Email author
  • Rashid Akbergenov
    • 1
  • Mikhail M. Pooggin
    • 1
  1. 1.Department of Plant Physiology, Botanical InstituteUniversity of BaselBaselSwitzerland
  2. 2.Friedrich-Miescher InstituteUniversity of BaselBaselSwitzerland

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