Fig. 4
![Fig. 4](http://media.springernature.com/full/springer-static/image/art%3A10.1186%2Fs13068-016-0611-1/MediaObjects/13068_2016_611_Fig4_HTML.gif)
The expression of the A. nidulans hexose transporter-encoding genes hxtB-E is upregulated in the presence of low concentrations of xylose. Transcript levels of hxtB-E (a–d) were determined by RT-qPCR in the wild-type strain when grown for 0, 6, 12, 18, and 24 h in the presence of 0.2 and 2 % xylose. Error bars indicate the standard deviation for three replicates