Pseudomonas syringae pv. tomato infection of tomato plants is mediated by GABA and l-Pro chemoperception.

ABSTRACT: Foliar bacterial pathogens have to penetrate the plant tissue and access the interior of the apoplast in order to initiate the pathogenic phase. The entry process is driven by chemotaxis towards plant-derived compounds in order to locate plant openings. However, information on plant signals recognized by bacterial chemoreceptors is scarce. Here, we show that the perception of GABA and l-Pro, two abundant components of the tomato apoplast, through the PsPto-PscC chemoreceptor drives the entry of Pseudomonas syringae pv. tomato into the tomato apoplast. The recognition of both compounds by PsPto-PscC caused chemoattraction to both amino acids and participated in the regulation of GABA catabolism. Mutation of the PsPto-PscC chemoreceptor caused a reduced chemotactic response towards these com

SUBMITTER: Santamaria-Hernando S 

PROVIDER: S-EPMC9452764 | biostudies-literature | 2022 Oct

REPOSITORIES: biostudies-literature