FIGURE 1.

HPLC chromatograms of Delftia strain D-2189 supernatants grown in Davis minimal medium with 0.5% glycerol after 7 days incubation at 30°C (black line) and 37°C (red line). Significant differences are apparent at 220 nm (A), with dominant peaks at 11.5 and 12.3 min in the active supernatant (30°C). In contrast, chromatograms of the same samples at 280 nm were very similar (B).