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Pathogens 2014, 3(1), 121-148;

Genomics-Based Exploration of Virulence Determinants and Host-Specific Adaptations of Pseudomonas syringae Strains Isolated from Grasses

Institute of Plant Biology, University of Zurich, Zollikerstrasse 107, 8008 Zurich, Switzerland
Author to whom correspondence should be addressed.
Received: 22 November 2013 / Revised: 20 January 2014 / Accepted: 22 January 2014 / Published: 28 January 2014
(This article belongs to the Special Issue Bacterial Pathogenomics: From Technology to Application)
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The Pseudomonas syringae species complex has recently been named the number one plant pathogen, due to its economic and environmental impacts, as well as for its role in scientific research. The bacterium has been repeatedly reported to cause outbreaks on bean, cucumber, stone fruit, kiwi and olive tree, as well as on other crop and non-crop plants. It also serves as a model organism for research on the Type III secretion system (T3SS) and plant-pathogen interactions. While most of the current work on this pathogen is either carried out on one of three model strains found on dicot plants with completely sequenced genomes or on isolates obtained from recent outbreaks, not much is known about strains isolated from grasses (Poaceae). Here, we use comparative genomics in order to identify putative virulence-associated genes and other Poaceae-specific adaptations in several newly available genome sequences of strains isolated from grass species. All strains possess only a small number of known Type III effectors, therefore pointing to the importance of non-Type III secreted virulence factors. The implications of this finding are discussed. View Full-Text
Keywords: Pseudomonas syringae; Poaceae; host-pathogen interactions; genomics Pseudomonas syringae; Poaceae; host-pathogen interactions; genomics

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Dudnik, A.; Dudler, R. Genomics-Based Exploration of Virulence Determinants and Host-Specific Adaptations of Pseudomonas syringae Strains Isolated from Grasses. Pathogens 2014, 3, 121-148.

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