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Figure 1 | BMC Genomics

Figure 1

From: Closely related Campylobacter jejuni strains from different sources reveal a generalist rather than a specialist lifestyle

Figure 1

Phylogenetic analysis of Campylobacter FBI-Zoo strain collection from humans, animals and food sources by MLST (Minimal Spanning Tree analysis-methods). A) Minimal spanning tree generated from MLST comparisons of all Campylobacter strains from the collection (Methods). B) Minimal spanning tree of C. coli strains. C) Minimal spanning tree of C. jejuni strains. Each circle represents one sequence type (all ST numbers indicated in B and C). In A), only dominant STs are indicated by numbers. Circles of increased diameter represent higher strain numbers within one ST. Different colours indicate strain source: blue-human; red-food; green-animal. The connecting lines between STs depict the number of allelic differences between them: one allele difference (black bold lines); two alleles difference (grey bold lines [A] or thin lines [B, C]); three alleles difference (grey hatched lines); more than three alleles difference (grey dotted lines). The phylogenetic group on the left of ST-61 represents all C. coli isolates, the phylogenetic tree expanding to the right of ST-61 comprises the C. jejuni strains. Clonal groupings (maximum two allele difference between neigbouring STs) in A) are indicated by colored shading around the circles and dominant STs within important groupings are designated with their respective ST numbers. The shading of clonal groupings is colored according to the majority isolation source. Grey shading indicates no predominance of source within the clonal groupings.

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