Figure 2.

Similarities and differences in the distributions of specific methylated histone H3 marks of (A) Fritillaria imperialis (this study) and (B) Arabidopsis thaliana (images of labelled nuclei taken from Fuchs and Schubert, [21]), which differ ~286-fold in genome size, together with (C) the interpretation of the histone methylation targets. Immunolabelling with antibodies against specific methylation marks (me1, me2, and me3) on lysines K4, K9, and K27 of histone H3 are visible as pink fluorescent signal on interphase nuclei that were counterstained with DAPI (blue fluorescent signal). Scale bars are shown, but to better illustrate the differences in nuclear size between A. thaliana and F. imperialis, a nucleus of each species is shown at the same magnification in (A) labelled for H3K9me1.