(A) Comparison of RNA isoforms and sRNA patterns generated by 35S:GFP-GUS and 35S:GFP-EVDint/ter-GUS. High and low molecular-weight RNA analysis using a GFP or GUS probe in two independent transgenic lines from each construct in the WT or rdr6 background. mRNA isoforms are indicated with arrows and correspond to the transcripts depicted in Fig.2A. EtBr staining of the agarose gel and miR171 probe serve as loading control for mRNAs and sRNAs, respectively. 