Integrons in Xanthomonas pathovars: Do they have a role in plant pathogenicity?

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Bacteria in the genus Xanthomonas cause serious diseases of plants, identification being based on the plant species from which they were originally recovered. Xanthomonads contain integrons, genetic elements capable of acquiring and expressing diverse genes. In other bacterial groups, the gene content of integrons varies significantly between strains of the same species, and in many cases these genes code for cell surface proteins. These characteristics are precisely those we might expect to be responsible for interactions between plants and bacteria. This project aims to examine a large collection of xanthomonads for integrons, and determine whether particular integron gene contents are associated with host-pathogen specificity.