Supplementary Figure 7: Comparison between the Legionella species tree and the gene trees of effectors that underwent HGT.
From: Genomic analysis of 38 Legionella species identifies large and diverse effector repertoires
The gene trees for each effector that underwent at least two gain events, had no paralogs and was present in at least four species was reconstructed and compared to an appropriate pruned version of the species tree using the AU test. q values were calculated by adjusting resulting P values using FDR61 to account for multiple testing. The plot displays the distribution of –log(q values) over 96 effector trees as compared to the species tree. The blue dashed line denotes the 0.01 cutoff. Most of the effector trees agree with the pruned version of the species tree, suggesting that there is preferential horizontal gene transfer of effectors among evolutionarily close species.
