Hypermutations in porcine respiratory and reproductive syndrome virus
2019
Dong, J. | Rao, D. | Ding, Y. | Zhao, Y. | Zhang, G. | Deng, K. | Li︠u︡, T. | Jiao, F. | Hu, J. | Wang, H. | Zhang, N. | Zhao, P. | Leng, C.
Porcine reproductive and respiratory syndrome (PRRS), which is caused by the PRRS virus (PRRSV), has resulted in large economic losses for the swine industry. The virus has shown remarkable genetic diversity since its discovery. In our study, we investigated mutation types in the evolution of PRRSV for both in vivo and in vitro passaging of the virus. Sequence alignment analysis demonstrated that the most common hypermutations expressed were A→G/U→C and G→A/C→U. The data provide a new theoretical basis for PRRSV evolution.
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