Maximum clade credibility tree summarizing the results of the Bayesian molecular clock analysis of the 100 concatenated core genome genes. The timeline indicates the age of the nodes when a mutation rate of 4.5 × 10-9 per year/site was used to calibrate the tree. One strain from each species or lineage was included in the analysis; L. monocytogenes lineages I (F2365), II (EGD-e) and IIIC (FSL F2-208), L. marthii (FSL S4-120), L. innocua (CLIP11262), L. welshimeri (SLCC5334), L. seeligeri (FSL N1-067), and L. ivanovii subsp. londoniensis (FSL F6-596). Values above the branches indicate posterior probability values, blue horizontal bars on the nodes show the 95% highest probability density of the inferred age of the nodes. The posterior probability of the individual trees and 95% highest probability density of the divergence time were based on 9,000,000 post burn-in generations of a 10,000,000 generation run. The values on the time lines represent ages as million years before present. Labels of pathogenic strains have been colored red.
den Bakker et al. BMC Genomics 2010 11:688 doi:10.1186/1471-2164-11-688