Skip to main page content
Access keys NCBI Homepage MyNCBI Homepage Main Content Main Navigation
, 95 (2), 177-87

Systemic Spread of Sequence-Specific Transgene RNA Degradation in Plants Is Initiated by Localized Introduction of Ectopic Promoterless DNA

Affiliations

Systemic Spread of Sequence-Specific Transgene RNA Degradation in Plants Is Initiated by Localized Introduction of Ectopic Promoterless DNA

O Voinnet et al. Cell.

Abstract

Systemic, posttranscriptional silencing of transgenes in Nicotiana benthamiana was initiated in localized regions of the plant by introduction of transgene-homologous DNA fragments, including those without a promoter. Following this initiation step, a sequence-specific signal of gene silencing spread from cells that had received the ectopic DNA via a relay mechanism that employs plasmodesmatal and phloem channels. The nature of this mechanism, the mode of its initiation, and the ability of the signal to move long distances indicate the existence of a sequence-specific signaling mechanism in plants that may have roles in developmental control as well as in protection against transposons and viruses.

Similar articles

See all similar articles

Cited by 194 PubMed Central articles

See all "Cited by" articles

Publication types

LinkOut - more resources

Feedback