Table 2.

Distribution of chitinase activity among various compartments at 150 h postinoculation

SurfaceRate of MUF-GlcNAc hydrolysis (μmol liter−1 h−1) (mean ± SD)
Surface associatedSurface associated + free enzyme + free cellsSurface associated + free enzyme (<0.2-μm-pore-size filtrate)
Chitin0.47 ± 0.050.50 ± 0.040.46 ± 0.05
Silicon0.24 ± 0.030.21 ± 0.020.22 ± 0.02