FIG. 1.

Effect of sucrose concentration on ADF activity toward L. humile feeding. The HGB007 isolate was grown in NB for 108 h, and powdered sucrose was added to the final sucrose concentrations indicated on the x axis. Sterile NB was used as a control. Eight plates (eight replicates) were used; each plate contained one well of each treatment. The experiment was conducted at four Davis field sites over the course of 4 days at temperatures ranging from 21 to 25°C. Experiments were terminated when the suspension in one of the wells on the plate was consumed. There was no significant difference (P > 0.05) between the values with the same lowercase letter above the bars.