Estimates of selection pressures acting on the HSP70h and coat protein (CP) genes of global PBNSPaV isolates.

aData sets are obtained by the analysis of 183 codons for HSP70h region and 319 codons for CP region, respectively.bPositively or negatively selected sites are identified by four selection pressure detection methods: single-likelihood ancestor counting (SLAC), fixed-effects likelihood (FEL), internal fixed-effects likelihood (IFEL), and random-effects likelihood (REL).cNormalized values of the ratio of nonsynonymous substitutions per nonsynonymous site (dN) to synonymous substitutions per synonymous site (dS) (dN–dS). Normalized dN–dS values 1 indicates positive selection.dThe positively selected amino acid sites are indicated in brackets.