FIG. 2.

Growth of Pseudomonas putida KT2440 (open symbols) and the KTaauR deletion mutant (closed symbols) on amino acids (circles) or amino acids supplemented with glucose (squares). Cells were pregrown overnight on M9+ medium (see Materials and Methods) and then transferred to M9 minimal medium supplemented with 10 mM amino acids as the sole carbon and nitrogen sources or amino acids with 22 mM glucose. Relative growth rates were estimated from absorption measurements at 595 nm between 0 and 26 h after transfer to fresh medium. The solid lines are fits of a modified logistic model to the data (26).