Quantitative GUS activity assay of fruiting bodies grown using wild-type and transgenic inoculants.

aWT: wild-type line; GUS lines carrying the hydrophobin A promoter (HGS) and laccase 2 promoter (LGS); 3 and 412 denote independent transformants.bnmol MUG hydrolyzed/minute/100 µg total soluble protein.cBoth upper and lower layers were inoculated with the indicated line.dUpper layer was inoculated with the indicated line and lower layer with a WT line.eValue represents the mean, where n = 2; (range).