Fig 3.

Extended gyrB phylogeny of LCB isolates and type strains of other currently accepted Lactococcus species. Phylogenies were annotated in iTOL [53], and clade color denotes species determined by whole-genome analysis (Fig. 1). Branch width is proportional to bootstrap support with increasing thickness. Colored strips denote strain origin: Red—Fish, Dark blue—Human, Light blue—Other animal, Green—Food. The tree was inferred using the Maximum Likelihood method and Tamura 3-parameter model [54] in MEGA-X [55] with a discrete Gamma distribution and a rate variation model allowing some sites to be evolutionarily invariable. An interactive, annotated version of this tree can be accessed athttps://itol.embl.de/tree/9942121104197701693846730.