Figure 3
Figure 3. Phylogenetic tree was constructed based on σC protein amino acid sequences of DRVs using a neighbor-joining method in the mega 6.0 software. Numbers at nodes indicated bootstrap percentages obtained after 1000 replicates. The σC protein amino acid sequence of a chicken-origin ARV/138/China strain (accession number AF218359) was included as an outgroup. The green solid circles indicate the HNXX-1/2021 and HNJZ-2/2021 strains described in this study. The solid triangles indicate NDRV strains emerged after 2017. The province and time in the WRVs name represent the province and time at which the strain was collected, respectively.