Fig. 2

Increase in the biomass content of the ΔxlnR, ΔclrB and ΔclrA cultures in glucose and wheat straw. The wheat straw cultures were inoculated with 1.5 g (wet weight) of mycelium from the corresponding glucose culture. The glucosamine content was measured from 1.5 g (wet weight) for the glucose culture and from the content of the full culture for the wheat straw cultures and the dry weight was calculated back using a standard curve of the glucosamine content against the dry weight. The results shown represent triplicates of three independent biological samples and the error bars indicate the standard error of the mean. * represents the conditions for which the t-test result had a p-value < 0.05 which means that the difference observed is significant when compared to the WT