The Pseudomonas syringae avrRpt2 gene contributes to virulence on tomato.

@article{Lim2005ThePS,
  title={The Pseudomonas syringae avrRpt2 gene contributes to virulence on tomato.},
  author={Melisa T S Lim and Barbara N. Kunkel},
  journal={Molecular plant-microbe interactions : MPMI},
  year={2005},
  volume={18 7},
  pages={
          626-33
        }
}
  • M. Lim, B. Kunkel
  • Published 2005
  • Biology, Medicine
  • Molecular plant-microbe interactions : MPMI
In order to cause disease on plants, gram-negative phytopathogenic bacteria introduce numerous virulence factors into the host cell in order to render host tissue more hospitable for pathogen proliferation. The mode of action of such bacterial virulence factors and their interaction with host defense pathways remain poorly understood. avrRpt2, a gene from Pseudomonas syringae pv. tomato JL1065, has been shown to promote the virulence of heterologous P. syringae strains on Arabidopsis thaliana… Expand
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TLDR
It is found that tomato strain PstDC3000 expressing avrRpt2 grew to significantly higher levels and often resulted in the formation of more severe disease symptoms in ecotype No-0 plants carrying a mutant RPS2 allele, as well as in two Col-0 mutant lines, cpr5 rps2 and coil rPS2, that exhibit enhanced resistance. Expand
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Results indicate that COR promotes bacterial virulence by activating the host's JA signaling pathway, and further suggest that the type III secretion system might also modify host defense by targeting theJA signaling pathway in susceptible tomato plants. Expand
The Pseudomonas syringae type III effector AvrRpt2 functions downstream or independently of SA to promote virulence on Arabidopsis thaliana.
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Transgenic plants expressing AvrRpt2 displayed enhanced susceptibility to PstDC3000 strains defective in type III secretion, indicating that enhanced susceptibility of these plants is not because of suppression of defense responses elicited by other type III effectors. Expand
The Pseudomonas syringae type III effector AvrRpt2 promotes virulence independently of RIN4, a predicted virulence target in Arabidopsis thaliana.
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  • Biology, Medicine
  • The Plant journal : for cell and molecular biology
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TLDR
The results indicate that the virulence activity of AvrRpt2 in A. thaliana is likely to rely on the modification of host susceptibility factors other than, or in addition to, RIN4. Expand
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The results suggest that the Arabidopsis PAL and BG genes may be activated by distinct signal transduction pathways and show that differences in plant gene induction by virulent and avirulent strains can be attributed to a cloned presumptive avr gene. Expand
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The findings suggest that broad tolerance of diverse vegetative diseases may be achieved via engineering of ethylene insensitivity in tomato, and that ethylene is not required for defense gene induction. Expand
Mutations in the Pseudomonas syringae avrRpt2 gene that dissociate its virulence and avirulence activities lead to decreased efficiency in AvrRpt2-induced disappearance of RIN4.
  • M. Lim, B. Kunkel
  • Biology, Medicine
  • Molecular plant-microbe interactions : MPMI
  • 2004
TLDR
An alteration in kinetics of RIN4 disappearance triggered by the C-terminal deletion mutants may provide the mechanistic basis for the uncoupling of the avirulence and virulence activities of avrRpt2. Expand
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TLDR
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