FIG. 2.

Role of the aec-35-aec-37 gene cluster in carbohydrate metabolism. Data for the seven carbohydrates that were differently metabolized by strain BEN2908 and its derivatives are reported as well as data obtained for the negative control (a well without carbohydrate). Strains BEN2908, BEN2929/pBEN182, BEN2929, and BEN2929/pCR2.1 (from left to right within each group) were seeded into Biolog PM1 and PM2 microplates containing a panel of 190 carbohydrates. The microplates were incubated aerobically at 37°C for 24 h and the optical density at 590 nm (OD₅₉₀) was measured. Experiments were done in triplicate (except for strain BEN2929/pCR2.1); means and standard deviations are indicated.