The exbD2 gene as well as the iron-uptake genes tonB, exbB and exbD1 of Xanthomonas campestris pv. campestris are essential for the induction of a hypersensitive response on pepper (Capsicum annuum).

Abstract excerpt

The tonB, exbB and exbD1 genes of Xanthomonas campestris pv. campestris are essential for ferric iron uptake. In contrast, the exbD2 gene located in the same gene cluster is not essential. Mutational analysis revealed that the ferric-iron-uptake genes tonB, exbB and exbD1 are necessary for the induction of a hypersensitive response (HR) on the nonhost plant pepper (Capsicum annuum) and the induction of typical...

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