Figure 4.
Assay for transposase-accessible chromatin using sequencing (ATAC-seq) analysis revealed apple- and pear-specific open chromatin regions in the gluteofemoral (GF) depot rather than in the abdominal (ABD) depot. A and B, Volcano plot representation of apple- (highlighted in red) and pear-specific (highlighted in blue) open chromatin regions in adipocyte fraction isolated from A, ABD and B, GF depot (P < .05). C and D, HOMER was used to annotate each identified open chromatin region to the closest gene using the hg19 reference genome. Open chromatin regions that could be annotated to differentially expressed genes (DEGs) are represented on the volcano: Open chromatin regions linked to apple- and pear-specific DEGs are highlighted in red and blue respectively in C, ABD and D, GF depots. Open chromatin regions that could not be linked to DEGs are represented in gray. E, Integrative Genomic Viewer (IGV) snapshot of ATAC-seq coverage in the GF depot representing 10 differentially opened chromatin regions (P < .05) between apple- and pear-shaped individuals associated with DEGs (false discovery rate < 0.05). The more accessible chromatin regions in apples are highlighted in red; more accessible regions in pears are highlighted in blue.