Format

Send to

Choose Destination
Virus Genes. 2019 Feb 15. doi: 10.1007/s11262-019-01647-1. [Epub ahead of print]

Genetic characterization of bovine coronavirus in Vietnam.

Author information

1
Viral Disease Division, Animal and Plant Quarantine Agency (QIA), Gimcheon, Gyeongbuk, 39660, Republic of Korea.
2
Korea Zoonosis Research Institute, Chonbuk National University, Iksan, Jeonbuk, 54531, Republic of Korea.
3
Faculty of Veterinary Medicine, Vietnam National University of Agriculture (VNUA), Hanoi, Vietnam.
4
Viral Disease Division, Animal and Plant Quarantine Agency (QIA), Gimcheon, Gyeongbuk, 39660, Republic of Korea. andj67@korea.kr.

Abstract

A maximum clade credibility tree constructed using the full-length spike (S) and hemagglutinin-esterase genes revealed that Vietnamese Bovine coronavirus (BCoV) strains belong to a single cluster (C1); therefore, they might share a common origin with Cuban and Chinese BCoV strains. The omega values of cluster 1 (C1) and cluster 2 (C2) were 0.15734 and 0.11613, respectively, and naive empirical bayes analysis identified two amino acid positions (179 and 501) in the S protein in C1 and three amino acid positions (113, 501, and 525) in that of C2 that underwent positive selection (p > 99%). The evolutionary rate of C1 was estimated to be 7.6206 × 10-4 substitutions/site/year, and the most recent common ancestor (tMRCA) of Vietnamese BCoVs was estimated to date back to 1962 (95% HPD 1950-1973). The effective population sizes of C1 and C2 underwent a rapid reduction after 2000 and 2004, respectively.

KEYWORDS:

Bovine coronavirus; Evolutionary rate; Positive selection; tMRCA

PMID:
30771080
DOI:
10.1007/s11262-019-01647-1

Supplemental Content

Full text links

Icon for Springer
Loading ...
Support Center