Resistance to citrus canker induced by a variant of Xanthomonas citri ssp. citri is associated with a hypersensitive cell death response involving autophagy-associated vacuolar processes.

ABSTRACT: Xanthomonas citri ssp. citri (X. citri) is the causal agent of Asiatic citrus canker, a disease that seriously affects most commercially important Citrus species worldwide. We have identified previously a natural variant, X. citri A^T , that triggers a host-specific defence response in Citrus limon. However, the mechanisms involved in this canker disease resistance are unknown. In this work, the defence response induced by X. citri A^T was assessed by transcriptomic, physiological and ultrastructural analyses, and the effects on bacterial biofilm formation were monitored in parallel. We show that X. citri A^T triggers a hypersensitive response associated with the interference of biofilm development and arrest of bacterial growth in C. limon. This plant respons

SUBMITTER: Roeschlin RA 

PROVIDER: S-EPMC6638218 | biostudies-literature | 2017 Dec

REPOSITORIES: biostudies-literature