Chromosomal distribution of small RNAs from wild-type and rdr2 inflorescence. Inflorescence small RNAs matched to the Arabidopsis chromosomes as measured by MPSS. The height of the vertical lines indicates the abundance of the small RNA. Maximum height of black bar, >25. The red bars indicate signatures with >125 transcripts per quarter million (TPQ) and highest black bars indicate signatures with >25 and ≤125 TPQ; other black bars indicate signature with ≤25 TPQ. Horizontal green bars indicate the approximate location of the centromere. (A) Wild-type inflorescence (adapted from Lu et al. 2005). (B) rdr2 inflorescence; the abundance of known miRNAs is indicated by blue lines.
