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. 2022 Sep 9;9:974743. doi: 10.3389/fvets.2022.974743

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Copyright © 2022 Sun, Xu, Li, Gong, Li, Tian and Zhang.

This is an open-access article distributed under the terms of the Creative Commons Attribution License (CC BY). The use, distribution or reproduction in other forums is permitted, provided the original author(s) and the copyright owner(s) are credited and that the original publication in this journal is cited, in accordance with accepted academic practice. No use, distribution or reproduction is permitted which does not comply with these terms.

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Phylogenetic analysis based on the TZJ2134-L12 and TZJ2134-(A+B) gene sequences and positions of TZJ2134-L12 and TZJ2134-(A+B) in the whole genome structure. (A) Phylogenetic tree based on TZJ2134-L12 of 60 PRRSV-1 strains. The TZJ2134 and DV strains belong to DV-like isolates, which are shown in yellow. (B) Phylogenetic tree based on TZJ2134-(A+B) of 65 PRRSV-1 strains. A novel subgroup DV+Amervac-like isolate is shown in green. (C) The whole genome structure of PRRSV, which shows the positions of 10 open reading frames. TZJ2134-L12 is located at nt 1672-nt 2112 in partial Nsp2, shown in blue; TZJ2134-(A+B) is located at nt 7463-nt 11272 in partial Nsp9, complete Nsp10 and partial Nsp11, shown in yellow. TZJ2134 is indicated with a red triangle in phylogenetic trees.