Northern blots showing expression of glycosidase genes under different growth conditions. Total RNA was extracted from T. maritima cells grown on the following polysaccharide substrates: potato starch (lanes S), carboxymethyl cellulose (lanes C), barley β-glucan (lanes B), konjac glucomannan (lanes K), and carob galactomannan (lanes G). Blots for the following genes are not shown since these genes were not expressed under the conditions tested: xyl10A (TM0061), xyl10B (TM0070), lam16 (TM0024), and cel12B (TM1524). Arrows indicate transcript sizes (in kilobases).