Fig. 2.

Neighbor-joining cluster analysis of individual partial DNA sequences of the genes coding for 16S rRNA and the housekeeping protein-encoding genes atpA, rpoA, bacT, pepN, pepX, and pheS from 10 wild strains of L. lactis of the lactis genotype and 10 wild strains L. lactis of the cremoris genotype, as well as a seven-locus MLST analysis based on the composite data set for the seven genes. Bootstrap percentages (≥50) after 500 simulations are shown for single and composite sequence analyses. Sequences of the genome-sequenced L. lactis IL 1403 (lactis genotype) and MG 1363 (cremoris genotype) strains were used as a control and are underlined. LL and LC, L. lactis subsp. lactis having a lactis genotype and a cremoris genotype, respectively.