Abstract
Xanthomonas arboricola pathovar corylina (Xac) causes a bacterial blight disease resulting in economic losses in young hazelnut trees worldwide. Although virulent Xac genomes were sequenced, there is no comparative genomics study on these genomes. In this study, all publicly available whole-genome sequences of Xac were compared by a comparative genomics approach. The results showed that Xac CFBP1159 and Xac CFBP2565 genomes are phylogenetically related to each other based on the orthology results. The genomic diversification of Xac strains was depended on mobile genetic elements. Interestingly, Xac NCCB100457 genome had additional motility genes than Xac CFBP1159 and Xac CFBP2565 genomes. All Xac genomes had shared virulence-related genes such as secretion systems and adherence factors. The comparative genomics approach of this study supports that Xac genomes have slight genetic variations, and the virulence-related proteins interacted with the host proteins. This comparative genomics approach will provide insights into the understanding of the Xac genomes.
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