Pseudomonas syringae pv. tomato DC3000: a model pathogen for probing disease susceptibility and hormone signaling in plants.

Journal Article (Review;Journal Article)

Since the early 1980s, various strains of the gram-negative bacterial pathogen Pseudomonas syringae have been used as models for understanding plant-bacterial interactions. In 1991, a P. syringae pathovar tomato (Pst) strain, DC3000, was reported to infect not only its natural host tomato but also Arabidopsis in the laboratory, a finding that spurred intensive efforts in the subsequent two decades to characterize the molecular mechanisms by which this strain causes disease in plants. Genomic analysis shows that Pst DC3000 carries a large repertoire of potential virulence factors, including proteinaceous effectors that are secreted through the type III secretion system and a polyketide phytotoxin called coronatine, which structurally mimics the plant hormone jasmonate (JA). Study of Pst DC3000 pathogenesis has not only provided several conceptual advances in understanding how a bacterial pathogen employs type III effectors to suppress plant immune responses and promote disease susceptibility but has also facilitated the discovery of the immune function of stomata and key components of JA signaling in plants. The concepts derived from the study of Pst DC3000 pathogenesis may prove useful in understanding pathogenesis mechanisms of other plant pathogens.

Full Text

Duke Authors

Cited Authors

  • Xin, X-F; He, SY

Published Date

  • January 2013

Published In

Volume / Issue

  • 51 /

Start / End Page

  • 473 - 498

PubMed ID

  • 23725467

Electronic International Standard Serial Number (EISSN)

  • 1545-2107

International Standard Serial Number (ISSN)

  • 0066-4286

Digital Object Identifier (DOI)

  • 10.1146/annurev-phyto-082712-102321


  • eng