Evolutionary History of the Closely Related Group 2 Coronaviruses: Porcine Hemagglutinating Encephalomyelitis Virus, Bovine Coronavirus, and Human Coronavirus OC43

Author:

Vijgen Leen1,Keyaerts Els1,Lemey Philippe2,Maes Piet1,Van Reeth Kristien3,Nauwynck Hans3,Pensaert Maurice3,Van Ranst Marc1

Affiliation:

1. Laboratory of Clinical & Epidemiological Virology, Department of Microbiology & Immunology, Rega Institute for Medical Research, University of Leuven, Leuven, Belgium

2. Department of Zoology, University of Oxford, Oxford, United Kingdom

3. Laboratory of Virology, Faculty of Veterinary Medicine, University of Ghent, Ghent, Belgium

Abstract

ABSTRACT The close genetic and antigenic relatedness among the group 2 coronaviruses human coronavirus OC43 (HCoV-OC43), bovine coronavirus (BCoV), and porcine hemagglutinating encephalomyelitis virus (PHEV) suggests that these three viruses with different host specificities diverged fairly recently. In this study, we determined the complete genomic sequence of PHEV (strain PHEV-VW572), revealing the presence of a truncated group 2-specific ns2 gene in PHEV in comparison to other group 2 coronaviruses. Using a relaxed molecular clock approach, we reconstructed the evolutionary relationships between PHEV, BCoV, and HCoV-OC43 in real-time units, which indicated relatively recent common ancestors for these species-specific coronaviruses.

Publisher

American Society for Microbiology

Subject

Virology,Insect Science,Immunology,Microbiology

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