TABLE 1.
Summary of nucleotide sequence variation for each MLST locus
| MLST locus | Sequence length (bp) | No. of alleles | No. of polymorphic sites | Nucleotide diversity (SE) | dS/dN ratio (P value)a |
|---|---|---|---|---|---|
| arcC | 465 | 14 | 20 | 0.018 (0.004) | 2.499 (0.014) |
| aroE | 420 | 13 | 27 | 0.014 (0.003) | 3.255 (0.001) |
| gtr | 438 | 9 | 18 | 0.014 (0.003) | 3.403 (0.001) |
| mutS | 412 | 8 | 9 | 0.007 (0.002) | 0.232 (0.817) |
| pyrR | 428 | 11 | 18 | 0.016 (0.004) | 3.403 (0.001) |
| tpi | 424 | 11 | 12 | 0.008 (0.002) | 2.929 (0.004) |
| yqiL | 416 | 16 | 16 | 0.011 (0.003) | 2.549 (0.012) |
a
The hypothesis tested is neutrality (dS = dN). The P value indicates the significance of the difference between dS and dN and must be <0.05 for hypothesis rejection at a 5% level.