Identification and validation of L er -specific H3K27me3 targets. (a) Venn diagram of H3K27me3 targets identified in Col and Ler. (b) GBrowse view of AT3G60150 as an example for a Ler-specific H3K27me3 target. The red frame indicates the location of AT3G60150 and the differential H3K27me3 signal in Col and Ler. (c) Validation of AT3G60150 by independent ChIP-PCR. ChIP-PCR fragment location is indicated in track 'PCR fragments' in (b). IP, immunoprecipitation.