is a leading cause of respiratory diseases in many host species. To understand the genetic characteristics of strains isolated from different host species, we sequenced the genomic DNA of isolated from pigs and analyzed the genetic characteristics of strains from avian species, bovine species, pigs, and rabbits using whole genome sequence (WGS) data. Our results found that a capsular: lipopolysaccharide (LPS): multilocus sequence typing (MLST) genotype A: L1: ST129 (43.75%) was predominant in avian ; while genotypes B: L2: ST122 (60.00%) and A: L3: ST79 (30.00%) were predominate in bovine ; genotype D: L6: ST50 (37.50%) in porcine ; and genotype A: L3: ST9 (76.47%) in rabbit . Comparative genomic analysis of from different host species found that there are no genes in the genome that are specific to any type of host. Phylogenetic analysis using either whole-genome single nucleotide polymorphisms (SNPs) or the set of SNPs present in all single-copy core genes across genomes showed that strains with the same LPS genotype and MLST genotype were clustered together, suggesting the combining both the LPS and MLST typing schemes better explained the topology seen in the phylogeny.
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| http://dx.doi.org/10.3389/fmicb.2018.01408 | DOI Listing |
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