Relationship Between Infection Efficiency and Enzymatic Activity of Paecilomyces lilacinus

Abstract

Determination of the infection efficiency of Paecilomyces lilacinus and level of 5 enzyme activities during growth period of 4 high-infection isolates (100% infection). i.e., solate no. AK 3-09, AK 6-03 NK 1-14 and NK 1-15 and one low-infection isolate (66% infection), i.e., isolate NK 1-12 were assayed and compared with a saprophytic fungus, Penicillium turbatum (UN- 3-05). Chitinase could be detected in all isolates of P. lilacinus but not in Penicillium turbatum. There was no difference in chitinase activity between the high-infection isolates and the low-infection isolate but chitobiase activity of low-infection isolate was 3.3-4.0 times higher than that of high-infection isolates. Protease and glucoamylase activities of the high-infection isolates were 1.2-4.2 and 20-120 times higher than that of the low-infection isolate, respectively.