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The psyI and psyR Genes of Pseudomonas syringae pv. tomato DC3000 Contribute to Bacterial Virulence on Tomato.

Phytopathology - 1 Apr 2026

Yeemin Jirachaya, Rossidivito Gabrielle, Bridges David F, Panchal Shweta, Rodrigues Jorge L Mazza, Melotto Maeli

Abstract excerpt

The LuxI/LuxR system, which produces and perceives N-acyl homoserine lactones (AHLs), plays a significant role in regulating pathogenesis and communication in gram-negative bacteria. A homologous system exists in Pseudomonas syringae pv. tomato (Pst) DC3000, which is encoded by the single-copy genes psyI/psyR. We created a double-knockout mutant of the AHL synthase (psyI) and the AHL receptor (psyR) genes in Pst...

Topics

Solanum lycopersicum
Pseudomonas syringae
Plant Diseases
Virulence
Bacterial Proteins
Plant Leaves
Indenes
Gene Expression Regulation, Bacterial
Mutation
Acyl-Butyrolactones

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PMID: 41364743
DOI: 10.1094/PHYTO-05-25-0192-R

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PubMed metadata and Literature Corpus relationships. Corpus snapshot updated 31 Aug 2026.

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