Fig. 5

Unrooted core protein families-based phylogenetic tree of Thermoplasmatales illustrating gene gains/losses. Bootstrap values are shown as open (< 80) and closed (> 80) circles. Total numbers of modifications (sums of gains, losses, reductions and expansions) are shown with lines of different thickness and colour (see the code in the top right corner of the figure). At each node, the numbers of genes present in ancestors (grey), gene gains (green) and losses (red) are shown. Bars of similar colours below those numbers represent relative proportions vs. the maximum number of genes among all ancestors, e.g. 1.854 genes present and 795 gene gains in Cuniculiplasma ancestor, or 856 gene losses, shown for “I-plasma” ancestor