Growth curves of the wild-type (♦), hfq mutant (▪), and hfq/pBC-hfq (▴) strains in BYE medium at 37°C (a), BYE medium at 30°C (b), with additional curves for hfq pMMB2002csrA (•) and CDM at 37°C (c), demonstrate growth defects of the hfq mutant. (d) Pigment production by wild-type strain JR32 (▪), the hfq mutant (□), and the hfq/C strain (░⃞) at 37°C in BYE and CDM and 30°C in BYE medium (with pigment production from hfq/pMMB2002csrA (▥).