Fig. 2.

Diversity and distribution of secondary metabolite BGCs in the Lecanoromycetes. (a) Topology represents the ML tree shown in figure 1 with branches colored by taxonomic order as per figure 2e legend. (b) Presence–absence matrix of BGCFs in each genome (rows), showing only PKSI class BGCFs for readability. Each matrix column represents a single BGCF, with columns ordered by presence–absence similarity profiles across genomes. Dendrogram above matrix displays the BGCF similarity profile clustering produced with hclust function in R. Horizontal, orange dashes delineate taxonomic families. Presence = black, absence = white. (c) Stacked bar plot showing the number of predicted BGCs per genome. Colors represent different BGC classes. (d) Histograms showing the number of genomes per BGCF. The top histogram shows the BiG-SCAPE results using a strict cutoff of 0.46 to group BGCs into BCGFs and the bottom histogram showing the results using a more relaxed cutoff of 1. Beta diversity statistics at both cutoffs are shown on each graph and are separated into their turnover and nestedness components. (e) PCoA of all BGCF presence–absence profiles shown in (b). Colors represent taxonomic orders with ellipses drawn around orders with three or more points.