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Type III secretion machines: bacterial devices for protein delivery into host cells.
Several Gram-negative pathogenic bacteria have evolved a complex protein secretion system termed type III to deliver bacterial effector proteins into host cells that then modulate host cellular…
Type III secretion system effector proteins: double agents in bacterial disease and plant defense.
Investigations of the functions of effectors within plant cells have demonstrated the plasma membrane and nucleus as subcellular sites for several effectors, revealed some effectors to possess cysteine protease or protein tyrosine phosphatase activity, and provided new clues to the coevolution of bacterium-plant interactions.
The complete genome sequence of the Arabidopsis and tomato pathogen Pseudomonas syringae pv. tomato DC3000
- C. Buell, V. Joardar, A. Collmer
- Biology, EngineeringProceedings of the National Academy of Sciences…
- 19 August 2003
The complete genome sequence of the model bacterial pathogen Pseudomonas syringae pathovar tomato DC3000 (DC3000), which is pathogenic on tomato and Arabidopsis thaliana, is reported and 1,159 genes unique to DC3000 are revealed, of which 811 lack a known function.
Harpin, elicitor of the hypersensitive response produced by the plant pathogen Erwinia amylovora.
A proteinaceous elicitor of the plant defense reaction known as the hypersensitive response was isolated from Erwinia amylovora, the bacterium that causes fire blight of pear, apple, and other…
The Pseudomonas syringae Hrp pathogenicity island has a tripartite mosaic structure composed of a cluster of type III secretion genes bounded by exchangeable effector and conserved effector loci that…
- J. Alfano, A. Charkowski, A. Collmer
- BiologyProceedings of the National Academy of Sciences…
- 25 April 2000
DNA sequence analysis of the hrp/hrc regions in Psy 61, Psy B728a, and Pto DC3000 has revealed a Hrp pathogenicity island (Pai) with a tripartite mosaic structure, and deletion of a large portion of the CEL strongly reduces growth and abolishes pathogenicicity in tomato.
Whole-Genome Sequence Analysis of Pseudomonas syringae pv. phaseolicola 1448A Reveals Divergence among Pathovars in Genes Involved in Virulence and Transposition
Examination of the complement of ORFs encoding virulence, fitness, and survival factors revealed a substantial, but not complete, overlap between these two pathovars.
The type III (Hrp) secretion pathway of plant pathogenic bacteria: trafficking harpins, Avr proteins, and death
The ability of plant pathogenic bacteria to deliver deathtriggering proteins to the interior of plant cells was revealed in a rapid succession of papers in 1996 that transformed the concepts of bacterial plant pathogenicity and is being studied as an entry to the larger problem of pathogenesis.
Deletions in the Repertoire of Pseudomonas syringae pv. tomato DC3000 Type III Secretion Effector Genes Reveal Functional Overlap among Effectors
The existence of an AvrE/DspA/E/HopR effector superfamily, which has representatives in virtually all groups of proteobacterial plant pathogens that deploy type III effectors, was revealed through bioinformatic analysis.
Pseudomonas syringae type III effector repertoires: last words in endless arguments.
GacA, the response regulator of a two-component system, acts as a master regulator in Pseudomonas syringae pv. tomato DC3000 by controlling regulatory RNA, transcriptional activators, and alternate…
- A. Chatterjee, Yaya Cui, Hailian Yang, A. Collmer, J. Alfano, A. Chatterjee
- BiologyMolecular plant-microbe interactions : MPMI
- 1 December 2003
It is established that GacA, located at the top in a regulatory cascade in DC3000, functions as a central regulator by controlling an assortment of transcriptional and posttranscriptional factors.