Pseudomonas syringae Type III Secretion Protein HrpP Manipulates Plant Immunity To Promote Infection.

ABSTRACT: The bacterial plant pathogen Pseudomonas syringae deploys a type III secretion system (T3SS) to deliver effector proteins into plant cells to facilitate infection, for which many effectors have been characterized for their interactions. However, few T3SS Hrp (hypersensitive response and pathogenicity) proteins from the T3SS secretion apparatus have been studied for their direct interactions with plants. Here, we show that the P. syringae pv. tomato DC3000 T3SS protein HrpP induces host cell death, suppresses pattern-triggered immunity (PTI), and restores the effector translocation ability of the hrpP mutant. The hrpP-transgenic Arabidopsis lines exhibited decreased PTI responses to flg22 and elf18 and enhanced disease susceptibility to P. sy

SUBMITTER: Jin Y 

PROVIDER: S-EPMC10269811 | biostudies-literature | 2023 Jun

REPOSITORIES: biostudies-literature