Fig. 2.

Monosaccharide composition of cell wall residues isolated from non-induced and BL-induced switchgrass cultures at the times indicated. Panels a, b, d, e, f, and g indicate arabinose, xylose, galactose, glucose, rhamnose, and mannose contents, respectively. c Indicates the ratio of arabinose to xylose. Non-induced and induced samples are presented as open bars/dash line and closed bars/solid line, respectively. All data are mean ± SE (n = 3). The significant differences from 0 h control were determined by the Student’s t test and represented by a single asterisk (p < 0.05) or double asterisk (p < 0.01). The significant differences by the Student’s t test between induced and non-induced samples at each time point are provided in Additional file 11: Table S8