Fig. 3
From: Ancestral gene acquisition as the key to virulence potential in environmental Vibrio populations
Distribution of the R5.7 and R5.8 cluster and the surrounding genes in the Splendidus clade. The phylogenetic tree was reconstructed on an alignment of 707 concatenated core proteins and rooted with V. breoganii FF50. The length of the outgroup branch has been arbitrarily defined (dashed line) to increase the resolution of the tree. The eight species considered are highlighted in alternating grays. Strains isolated from Plum Island are indicated by the same color code as in Fig. 1 (outer-circle). Species assignment and correspondence to population assignment in Fig. 1 are also indicated. Strains isolated from oyster-farming areas in France, i.e., V. chagasii, V. crassostreae, and Vibrio sp. nov F13-like are indicated in gray (outer-circle). The absence and presence of the R5.7/8 cluster are represented by white and red squares, respectively. The presence of the surrounding genes is indicated by a black square if they belong to the same syntenic group of the R5.7/8 gene cluster (see also Figure S1). Note that in V. splendidus, only the strain 1S_14 lacks the R5-7/8, while strains FF_139, FF-144, and 1S-157 lack at least one flanking gene. Red and white circles on the tree indicate acquisition and loss of R5.7/8, respectively
