Effect of priming on genome-wide histone modification profiles. (A) Total number of continuous stretches of DNA ('islands') associated with specific histone modifications in roots of primed (PR; light colors) and non-primed (CR; dark colors) plants as determined by SICER . (B) Total coverage of the genome with islands of specific histone modifications (in percent of whole genome sequence length). (C) Numbers of differences in genome-wide histone modification profiles identified by CHIPDIFF . Numbers of differential sites that showed an increase of read count in the primed sample over the non-primed sample (PR/CR >1.2) are plotted to the right those that showed a decrease (CR/PR >1.2) are plotted to the left of the vertical bar. Data were obtained from pooled root material representing three independently treated plant batches of approximately 300 plants each.
Sani et al. Genome Biology 2013 14:R59 doi:10.1186/gb-2013-14-6-r59