FIG 2.

(A) Simplified schematic of fungal (top) and plant (bottom) cell wall structures and targets of enzymes identified in the metagenomes. (B) PCA of relative abundances of carbohydrate-active enzymes in worker gut metagenomes. Shapes represent termite feeding groups. Mn, Macrotermes natalensis; Od, Odontotermes sp.; Nc, Nasutitermes corniger; Aw, Amitermes wheeleri; Mp, Microcerotermes parvus; Co, Cornitermes sp.; Th, Termes hospes; Nt, Neocapritermes taracua; Cu, Cubitermes ugandensis. (C) Higher (red) and lower (blue) relative abundances of enzymes putatively targeting chitin, β-glucan, and α-glucan from the fungal cell wall and cellulose and hemicellulose in nine metagenomes shown as log₂-transformed fold changes to the average relative abundance across nine species. Mannanases and galactosidases that putatively target plant and fungal cell wall components, respectively, are grouped separately.