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Fig. 5 | Genome Biology

Fig. 5

From: Histone modifications during the life cycle of the brown alga Ectocarpus

Fig. 5

Genomic distribution of the histone PTM H3K79me2. a Representative region of 0.4 Mbp from chromosome 4 (spanning the genes with LocusIDs Ec-04_005800 to Ec-04_006210) showing alternating regions marked or not with H3K79me2 (blue peaks) during both the sporophyte and gametophyte generations of the life cycle. Blue bars indicate the H3K79me2 regions. The distribution of H4K20me3 (purple peaks) is also shown for comparison (peaks called by MACS2 are indicated by purple bars). Light blue boxes represent transposons (TEs). Grey boxes and arrows represent exons superimposed on genes represented by a black line. Vertical dotted lines indicate the positions of TSSs. b Genome-wide overlap between peaks of H3K79me2 and H4K20me3. c Genes in H3K79me2 regions have fewer exons. d Lengths of genes within (In) or outside (Out) H3K79me2 regions. e Abundances of transcripts for genes within (In) or outside (Out) H3K79me2 regions. f Histone PTMs on genes within (In) or outside (Out) H3K79me2 regions. A gene was considered to be “In” if more than 50% of the gene body (TSS-TES) was inside a H3K79me2 region. SP, sporophyte; GA, gametophyte; kb, kilobase pairs. Asterisks indicate significant differences (Bonferonni-adjusted Wilcoxon tests; ***p < 0.0001; **p < 0.001; *p < 0.05)

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