Fig. 4

Population-specific genetic profiles. COG analysis of population-specific accessory genes. Functional enrichment was evaluated using a one-sided Fisher’s exact test to identify significant terms against random expectation based on the reference genome NCC2705. The enriched terms are marked with asterisks. *P < 10−5, **P < 10−10. Two hundred and ninety-five representative strains retained after fineSTRUCTURE runs were used for this part of analyses