Fig. 2

Distributions of non-coding smallRNA precursor’s expression differ between B73 and rpd1/rmr6 mutant. Frequency of transcripts with 0 FPKM (left), histograms of expression distribution (center) and cumulative frequency (right) for transcripts with >0 FPKM are reported for the expressed coding transcripts (a), lncRNAs (b) and non-coding smallRNA (sRNA) precursors (c). In all three transcript groups, the frequency of transcripts with no expression (0 FPKM) in one genotype is significantly higher in B73 than in rpd1/rmr6 (P = 0, by Fisher’s exact test) while the distributions of transcript expression (including only transcripts with FPKM > 0) are statistically different between the two genotypes exclusively for non-coding sRNA precursors (P < 0.01 by K-S test)