Fig. 1

Phylogenetic analysis of the VP7 gene of G8 rotavirus strains used in the phylogenetic study of RVA strains. Phylogenetic tree of VP7 gene. This tree involves five different VP7 genes including G8, G3, G9, G1 and G2. The G8 gene was further clustered into four lineages. Studied strains were marked in different shapes and colors. : sample strains; : G8P[8] strains in various regions; : animal-derived strains; : strains in mainland China. All sequences except those of the sample strains were obtained from the NCBI public database. The Kimura-2 parameter model was used for the construction of the Neighbor-Joining phylogenetic tree. Bootstrap numbers are shown at the branch nodes and are more reliable at values of > 70%. The scale bar indicates nucleotide substitutions per site