FIG. 4.

M. xanthus cells die slowly in the presence of 2dGlc. The turbidity (A) and viability (B) of subcultures left untreated (open circles) or treated with 2dGlc as described in the legend to Fig. 2 (filled circles) was monitored over a 48-h time course. Viability was determined by plating serial dilutions of the subcultures on CTPM agar plates. Note that a twofold loss in viability is observed after 12 h of treatment with 2dGlc, corresponding to the period of one doubling in the untreated culture.