Fig. 1
From: xenoGI 3: using the DTLOR model to reconstruct the evolution of gene families in clades of microbes
Illustration of a gene loss detected by xenoGI in a set of Vibrio species. The left side of the figure shows the phylogenetic tree for our five Vibrio strains. The right side shows one particular genomic region where a genomic island inserted. The island is present in V. cholerae, V. fluvialis, V. qinghaiensis and V. parahaemolyticus, having inserted on the lineage leading to V. parahaemolyticus (green star on the tree). The original insertion involved four genes, which are shown in green. However in V. cholerae only three are present. One gene, an AraC transcription factor, is present in V. fluvialis, V. qinghaiensis and V. parahaemolyticus (indicated by red boxes), but has been lost in V. cholerae. This gene was lost on the lineage leading to V. cholerae (green dot on the phylogenetic tree)