<i>hen2</i> mutants accumulate snoRNA precursors.

<p>qRT-PCR. A diagram of the genomic locus with the indicated snoRNA genes is shown at the top of each panel. Individual snoRNA genes are represented as yellow arrows. Red bars above the diagram represent probes detected in the tiling analysis. Green arrows above or below the diagram depict the location of qRT-PCR primers. The corresponding qRT-PCR results for each primer pair are given as fold-change relative to WT in the histograms below each diagram. <i>mtr4-1</i> in red, <i>mtr4-2</i> in orange, <i>hen2-2</i> in light green, <i>hen2-4</i> in dark green, <i>RRP41</i> control in light grey, <i>RRP41</i> RNAi in dark grey. Error bars = SD in three biological replicates.