Fig. 2

vsiRNAs in rice and small brown planthopper. a Venn diagram showing number of unique vsiRNAs that were specific to rice or planthopper and those found in both hosts. b, c Size distribution of vsiRNAs in rice (b) and small brown planthopper (c). vsiRNAs are 18–30-nt sRNAs in RSV-infected rice and planthopper with up to one mismatch to the RSV genome. Numbers of vsiRNAs of the same size but with different 5′ terminal nucleotides are drawn in different colors. d 5′ terminal nucleotide frequency of vsiRNAs in RSV-infected rice and planthopper. e, f Distribution of vsiRNAs along the RSV genome in RSV-infected rice (e) and small brown planthopper (f). Four segments of the RSV genome were arranged along the X-axis with length drawn to scale. vsiRNAs that were derived from the sense and antisense strand were shown above and below the horizontal line, respectively. Numbers of vsiRNAs with the most abundant size class (21-nt in rice and 22-nt in planthopper) were separated from those of other size classes