Fig. 4

Growth and resistance against AIB phenotypes of the mutant strains. Above, the chromosome localization of the subtelomeric genes and the applied gene disruption approach to both strains IFO1802 and AQ2901 are shown. Below, the ability to use AIB as the sole nitrogen source (column AIB) and the resistance against the AIB’s inhibitory growth effect (columns P, AIB + P, G & AIB + G) exhibited by parental and mutant strains are depicted. G: 10 mM glutamine; P: 10 mM proline; AIB: 10 mM 2-aminoisobutyric acid