… I thank Allison Mallory for critical reading of the manuscript and David Bartel and members
of the Vaucheret and Bartel laboratories for fruitful discussions. I apologize for colleagues …

MicroRNAs (miRNAs) and short interfering RNAs (siRNAs), 20- to 27-nt in length, are essential
regulatory molecules that act as sequence-specific guides in several processes in most …

RNA silencing is a remarkable type of gene regulation based on sequence-specific targeting
and degradation of RNA. The term encompasses related pathways found in a broad range …

… Mature miR403 directs cleavage of AGO2 mRNA (Allen et al. 2005) and is more easily
detected by RNA blotting than is miR403* (H. Vaucheret, unpubl.). We infer that sequencing …

Posttranscriptional gene silencing (PTGS) in plants results from the degradation of mRNAs
and shows phenomenological similarities with quelling in fungi and RNAi in animals. Here, …

MicroRNAs (miRNAs) are ∼21 nucleotide noncoding RNAs produced by Dicer-catalyzed
excision from stem-loop precursors. Many plant miRNAs play critical roles in development, …

… in long days (16 h of light, 8 h of dark) at 23C or short days (8 h of light, 16 h of dark) at 17C. …
and other members of the Bartel and Vaucheret laboratories for stimulating discussions. This …

Using grafting procedures, we investigated the transmission of co-suppression of nitrate
reductase and nitrite reductase host genes and transgenes and of post-transcriptional silencing …

Here we describe a set of endogenous short interfering RNAs (siRNAs) in Arabidopsis, some
of which direct the cleavage of endogenous mRNAs. These siRNAs correspond to both …

In mammalian cells, the nuclear export receptor, Exportin 5 (Exp5), exports pre-microRNAs (pre-miRNAs)
as well as tRNAs into the cytoplasm. In this study, we examined the function of …