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

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...

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Main Authors: Alexey Dudnik, Robert Dudler
Format: Article
Language:English
Published: MDPI AG 2014-01-01
Series:Pathogens
Subjects:
Online Access:http://www.mdpi.com/2076-0817/3/1/121
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author Alexey Dudnik
Robert Dudler
author_facet Alexey Dudnik
Robert Dudler
author_sort Alexey Dudnik
collection DOAJ
description 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.
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spelling doaj.art-e1e4534306a244eab538a41f332805862022-12-22T02:18:50ZengMDPI AGPathogens2076-08172014-01-013112114810.3390/pathogens3010121pathogens3010121Genomics-Based Exploration of Virulence Determinants and Host-Specific Adaptations of Pseudomonas syringae Strains Isolated from GrassesAlexey Dudnik0Robert Dudler1Institute of Plant Biology, University of Zurich, Zollikerstrasse 107, 8008 Zurich, SwitzerlandInstitute of Plant Biology, University of Zurich, Zollikerstrasse 107, 8008 Zurich, SwitzerlandThe 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.http://www.mdpi.com/2076-0817/3/1/121Pseudomonas syringaePoaceaehost-pathogen interactionsgenomics
spellingShingle Alexey Dudnik
Robert Dudler
Genomics-Based Exploration of Virulence Determinants and Host-Specific Adaptations of Pseudomonas syringae Strains Isolated from Grasses
Pathogens
Pseudomonas syringae
Poaceae
host-pathogen interactions
genomics
title Genomics-Based Exploration of Virulence Determinants and Host-Specific Adaptations of Pseudomonas syringae Strains Isolated from Grasses
title_full Genomics-Based Exploration of Virulence Determinants and Host-Specific Adaptations of Pseudomonas syringae Strains Isolated from Grasses
title_fullStr Genomics-Based Exploration of Virulence Determinants and Host-Specific Adaptations of Pseudomonas syringae Strains Isolated from Grasses
title_full_unstemmed Genomics-Based Exploration of Virulence Determinants and Host-Specific Adaptations of Pseudomonas syringae Strains Isolated from Grasses
title_short Genomics-Based Exploration of Virulence Determinants and Host-Specific Adaptations of Pseudomonas syringae Strains Isolated from Grasses
title_sort genomics based exploration of virulence determinants and host specific adaptations of pseudomonas syringae strains isolated from grasses
topic Pseudomonas syringae
Poaceae
host-pathogen interactions
genomics
url http://www.mdpi.com/2076-0817/3/1/121
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