1. Genogroup and genotypes of GI, GII, GIII, GIV, and GV sapovirus strains based on complete VP1 nucleotide sequences.
Genogroup and genotypes of GI, GII, GIII, GIV, and GV sapovirus strains based on complete VP1 nucleotide sequences. The phylogenetic tree is based on the complete VP1 nucleotide sequences (approximately 1,690 nt) of a total of 59 sapovirus strains (representing 58 sapovirus strains corresponding to all genotypes within GI, GII, GIV, and GV and one porcine strain representing GIII). The phylogenetic tree was constructed by the neighbor-joining method with 1,000 bootstrap replications using NJPlot software ( (273). The numbers on each branch indicate the bootstrap values of ≥950. The scale represents the nucleotide substitutions per site. Each sapovirus strain is indicated as genogroup/genotype-GenBank accession number-strain name (i.e., GI.1-U65427-Sapporo). Genotyping numbers are updated based on a recent classification scheme (87). Genotyping numbers from three other reports (46, 47, 96) are summarized for comparison.
Tomoichiro Oka et al. Clin. Microbiol. Rev. 2015; doi: /CMR