FIG 5.

Effect of the disruption of the foxA gene on pyoverdine production by P. fluorescens BBc6R8. (a) P. fluorescens P28H6. (b) P. fluorescens P18B10. (c and d) P. fluorescens P28H6 (c) and P. fluorescens P18B10 (d) cultivated with S. ambofaciens ATCC 23877 (Sa). (e and f) P. fluorescens P28H6 cultivated with S. coelicolor M512 cchH (e) and with S. coelicolor M512 desD (f). (g and h) P. fluorescens P28H6 (g) and P. fluorescens P18B10 (h) cultivated in the presence of 200 μM desferrioxamine B mesylate. The Streptomyces strains were streaked on plates 30 h before the inoculation of P. fluorescens. The images were taken under UV light from below the plates after a 2-day (co)culture at 26.5°C on 26A agar medium.