Extinction and emergence of genomic haplotypes during the evolution of Avian coronavirus in chicken embryos.

ABSTRACT: Avian coronavirus (AvCoV) is ubiquitously present on poultry as a multitude of virus lineages. Studies on AvCoV phenotypic traits are dependent on the isolation of field strains in chicken embryonated eggs, but the mutant spectrum on each isolate is not considered. This manuscript reports the previously unknown HTS (high throughput sequencing)-based complete genome haplotyping of AvCoV isolates after passages of two field strains in chicken embryonated eggs. For the first and third passages of strain 23/2013, virus loads were 6.699 log copies/ μL and 6 log copies/ μL and, for 38/2013, 5.699 log copies/μL and 2.699 log copies/μL of reaction, respectively. The first passage of strain 23/2013 contained no variant haplotype, while, for the third passage, five putative variant haplotypes were f

SUBMITTER: Brandao PE 

PROVIDER: S-EPMC7249780 | biostudies-literature | 2020 Jan-Mar

REPOSITORIES: biostudies-literature