Results showed that almost all investigated genes encoding
chitinases (glycoside hydrolase family 18) from subgroups
A, B and C and N-acetylglucosaminidases (glycoside
hydrolase family 20) responded to mycoparasitic conditions
and were upregulated before contact and/or at contact with
the host (Fig. 2). When alone, all tested chitinases of T.
gamsii 6317 were expressed at very low levels. In the presence
of F. graminearum, all chitinases except ech42 were expressed
strongly before contact and a little less at contact, whereas no
expression was detected after contact.