Fig. 3

Principle component analysis (PCA) bi-plots showing the distribution of prokaryotic genes involved in lignocellulose digestion in the gut of termites. A PCA performed on the relative abundance of 346 CAZymes found in 129 gut metagenome assemblies. The 50 glycoside hydrolases (GHs) that contributed the most to separation of termite diets are plotted (see Table S7). B PCA inferred from relative abundance of metabolic genes involved in lignocellulose digestion after carbohydrate degradation. The symbols indicate host feeding habits. The species identity of each data point is available in Table S1. Asterisks indicate significant differences among the four termite groups at 5% false discovery rate (FDR, *p < 0.05; **p < 0.01; ***p < 0.001)