Fig. 3: Plants are more tolerant to commensals than to pathogens.

a, Density plot of log₁₀(bacterial load) for the three synthetic communities. Vertical dashed lines indicate means, and the shaded areas represent 95% Bayesian credible intervals of the fitted parameter, following the model [log₁₀(bacterial load) ~ treatment + genotype + experiment + error]. Load was computed as the ratio of bacterial chromosomes to plant chromosomes and therefore is dimensionless. b, Association of log₁₀(bacterial load) with rosette fresh weight. Shaded areas indicate 95% confidence intervals of the association curve; bacterial load was defined as the cumulative abundance of all barcoded isolates that constituted a synthetic community. Pearson’s correlation and the respective P value are noted for each synthetic community. For Pathocom, n = 170, n = 151 for CommenCom, and n = 182 for MixedCom.