Fig. 2
Microreact screenshot representing the distribution of the whole LISTADAPT dataset (n = 1484) by geographic region (a) and time (b). The k-mer-based phylogenomic clustering of the complete dataset is shown in (c). Interactive access to strain metadata and MLST types is available through Microreact44, a recently developed online tool for visualizing and sharing spacio-temporal and genetic distributions of strains (Fig. 2, accession link: https://microreact.org/project/8YtGBqEqhosJtysXTVY79M-figure-2-distribution-of-the-whole-listadapt-dataset-n1484-by-geographic-region-time-and-genetic-diversity). The dataset interactive map was generated using either the exact GPS coordinate, regional GPS coordinate or national GPS coordinate according to the level of details available for each strain. An annual timescale was used. The core genome MLST (Moura et al.) tree was generated from the draft genome assemblies using pairwise categorical difference and single linkage method in BioNumerics. The tree revealed three main clades corresponding to Lm phylogenetic lineages. Each clade included several clusters corresponding to MLST types (CC and singleton ST). Circles in shade of blue show food product isolates (clear blue: fish product, greeblue: dairy products, blue: composite dishes, deep blue: meat products). Circles in shade of orange show animal and environment isolates (beige: soil & farm environment, golden: wild animal, deep orange: farm animals). Circles size is proportional to the number of strains included.
