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Fig. 2 | BMC Biology

Fig. 2

From: Behavioral heterogeneity in quorum sensing can stabilize social cooperation in microbial populations

Fig. 2

Nutrient deprivation contributes to the emergence of conditional defector. Population divergence of repeatedly subcultured WT PAO1 at 24-h intervals was determined in 1.0 ml of a LB, b 1/4-LB (4-fold diluted LB), c M9-casamino acids (CAA, 0.5%), d M9-CAA (0.1%), and e blank M9, respectively. f Expression of lasB gene during the in vitro evolution of P. aeruginosa under different culture conditions. The expression values of lasB gene in each culture were normalized to that of LB on day 1. Data shown are the mean values ± SD of three independent experiments. Statistical significance by two-tailed unpaired t test in comparison to day 1 of each culture is indicated as *P < 0.05; **P < 0.01; ***P < 0.001. C, cooperator; CD, conditional defector; D, defector

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