Fig. 4

Hierarchical clustering using COGs-based Jaccard’s distance (Jd). The dendrogram was obtained using the COGs-based Jaccard’s distance and the Ward clustering method. The silhouette values are shown as blue and pink bars for k=3 and k=10, respectively. The blue and pink lines indicate the heights where the dendrogram was cut (k=3 and k=10, respectively). The names of the strains shown in light blue correspond to Bacillus isolated from aquatic environments