Fig. 8.

Lignin (a) and structural sugar contents (b) of mature stems from different Arabidopsis lines. Insoluble lignin (IL) and acid-soluble lignin (ASL) contents (% weight) were determined in mature stems of wild type, double mutant and complemented double, respectively. Plant materials from 3 to 4 plants were pooled as one replicate. Three replicates were then measured independently. Bars indicate mean ± SD of the replicates. Student’s t-test was used to determine significant differences for total lignin and sugar contents: *, P < 0.05; **, P < 0.01; ***, P < 0.001