Fig. 4
From: The evolution of CHROMOMETHYLASES and gene body DNA methylation in plants
Presence/absence (+/–) of genes likely involved in the evolution of gbM and heterochromatin formation for various taxonomic groups of Viridiplantae. Families (orthogroups) of gbM- and heterochromatin-related genes are taxonomically diverse. However, after phylogenetic resolution, clades containing proteins of known function in A. thaliana are less diverse. Specifically, the CMT3 and orthologous genes (ZMET2 and ZMET5, and A. trichopoda CMT3) and IBM1 are angiosperm-specific. Other clades – SUVH4 and homologous SUVH5/6 (hSUVH5/6) – are more taxonomically diverse, which might relate to universal functions in heterochromatin formation