Silencing of BdPDS in B. distachyon leaves A Leaves of B. distachyon infected with BSMV-GFP375 or BSMV-BdPDS. B BdPDS RNA expression levels in experiments 2 and 3 (Table 1) determined by qRT-PCR (normalization to 18 S rRNA). Plants were inoculated with either BSMV-BdPDS (black bars) or BSMV-GFP375 (white bars). From left to right, the bars represent 16, 13, 6 and 6 samples, respectively. Error bars denote standard deviations. AU - Arbitrary units. Significantly differences: * (p < 0.01), ** (p < 0.0001).