1 To study regulation and roles of the troBCA operon in zinc homeostasis and virulence of A. tumefaciens.
2 To study regulation and roles of putative genes involved in zinc efflux (zntR, zntA and zntB) in zinc homeostasis and virulence of A. tumefaciens.
3 To study regulation and roles of putative genes involved in cobalt and nickel transport (dmeR and dmeF) in metal homeostasis and virulence of A. tumefaciens.