FIG. 2.

Phenotype of the argK mutant grown under conditions of phaseolotoxin synthesis. P. syringae pv. phaseolicola and the argK mutant (UIKcat) were grown in M9 liquid medium at 18°C. Growth was monitored by measuring absorbance at 600 nm. Squares, P. syringae pv. phaseolicola; circles, UIKcat; solid symbols, growth in unsupplemented M9 medium; open symbols, growth in M9 medium supplemented with 20 mM arginine. Each data point is the average from triplicate experiments. OD 600, optical density at 600 nm.