Fig. 5

Putative complete horizontal gene transfer events (accounting for intergenic recombination) found for 11 main genes of 46 betacoronavirus organisms from Fig. 4. The detected complete horizontal gene transfers are mapped into the species tree (i.e. whole genome tree). Numbers on the internal tree branches represent their bootstrap scores. Transfer directions are represented by arrows (when the direction is not certain, the arrow is bidirectional). Transfer bootstrap scores calculated by the HGT-Detection program [6] and the associated gene names are indicated on arrows