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View article: First Report of <i>Dickeya dianthicola</i> Causing Potato Blackleg in Oregon
First Report of <i>Dickeya dianthicola</i> Causing Potato Blackleg in Oregon Open
In May 2023, one potato seed lot (variety 'Russet Norkotah') submitted to Oregon State University's Hermiston Agricultural Research and Extension Center seed lot trials (Umatilla County, OR) had stunted plants expressing wilt and stem rot …
View article: Genome-wide identification of novel flagellar motility genes in Pseudomonas syringae pv. tomato DC3000
Genome-wide identification of novel flagellar motility genes in Pseudomonas syringae pv. tomato DC3000 Open
Pseudomonas syringae pv. tomato DC3000 ( Pst DC3000) is a plant pathogenic bacterium that possesses complicated motility regulation pathways including a typical chemotaxis system. A significant portion of our understanding about the genes …
View article: Environmental alkalization suppresses deployment of virulence strategies in <i>Pseudomonas syringae</i> pv. <i>tomato</i> DC3000
Environmental alkalization suppresses deployment of virulence strategies in <i>Pseudomonas syringae</i> pv. <i>tomato</i> DC3000 Open
Plant pathogenic bacteria encounter a drastic increase in apoplastic pH during the early stages of plant immunity. The effects of alkalization on pathogen-host interactions have not been comprehensively characterized. Here, we used a globa…
View article: Analysis of soft rot Pectobacteriaceae population diversity in US potato growing regions between 2015 and 2022
Analysis of soft rot Pectobacteriaceae population diversity in US potato growing regions between 2015 and 2022 Open
Introduction Soft rot Pectobacteriaceae (SRP) bacteria are globally dispersed pathogens that cause significant economic loss in potato and other crops. Our understanding of the SRP species diversity has expanded in recent years due to adva…
View article: <i>Pseudomonas syringae</i>socially-induced swimming motility requires the molybdenum cofactor
<i>Pseudomonas syringae</i>socially-induced swimming motility requires the molybdenum cofactor Open
Social interactions among bacteria can induce behaviors that affect their fitness and influence how complex communities assemble. Here we report a new socially-induced motility behavior that we refer to as baited expansion in Pseudomonas s…
View article: Reproducible Quantitative Trait Loci for Resistance to Soft Rot Caused by <i>Dickeya dianthicola</i> Derived from the Wild Potato <i>Solanum microdontum</i> (PI 458355) Are Located on Chromosomes 1, 3, and 5
Reproducible Quantitative Trait Loci for Resistance to Soft Rot Caused by <i>Dickeya dianthicola</i> Derived from the Wild Potato <i>Solanum microdontum</i> (PI 458355) Are Located on Chromosomes 1, 3, and 5 Open
The potato wild relative Solanum microdontum is a breeder-friendly source of genetic resistance to soft rot. Our objectives were to (i) identify loci associated with soft rot resistance in S. microdontum germplasm and (ii) develop bi-paren…
View article: AlgU, a Conserved Sigma Factor Regulating Abiotic Stress Tolerance and Promoting Virulence in<i>Pseudomonas syringae</i>
AlgU, a Conserved Sigma Factor Regulating Abiotic Stress Tolerance and Promoting Virulence in<i>Pseudomonas syringae</i> Open
Pseudomonas syringae can rapidly deploy specialized functions to deal with abiotic and biotic stresses. Host niches pose specific sets of environmental challenges driven, in part, by immune defenses. Bacteria use a “just-in-time” strategy …
View article: Complete Genome Sequence of a Gram-Positive Bacterium, <i>Leifsonia</i> sp. Strain PS1209, a Potato Endophyte
Complete Genome Sequence of a Gram-Positive Bacterium, <i>Leifsonia</i> sp. Strain PS1209, a Potato Endophyte Open
We report the complete and annotated genome sequence of a Gram-positive bacterium, Leifsonia sp. strain PS1209, a potato endophyte that was isolated from apparently healthy tubers of potato cultivar NY166. The circular genome is 4,091,164 …
View article: Pseudomonas syringae AlgU Downregulates Flagellin Gene Expression, Helping Evade Plant Immunity
Pseudomonas syringae AlgU Downregulates Flagellin Gene Expression, Helping Evade Plant Immunity Open
Foliar plant pathogens, like Pseudomonas syringae , adjust their physiology and behavior to facilitate host colonization and disease, but the full extent of these adaptations is not known. Plant immune systems are triggered by bacterial mo…
View article: Complete Genome Sequence of Dickeya dianthicola ME23, a Pathogen Causing Blackleg and Soft Rot Diseases of Potato
Complete Genome Sequence of Dickeya dianthicola ME23, a Pathogen Causing Blackleg and Soft Rot Diseases of Potato Open
In 2014, an outbreak of potato blackleg and soft rot disease emerged in North America and continues to impact potato production. Here, we report the annotated genome sequence of Dickeya dianthicola ME23, a strain hypothesized to be represe…
View article: <i>Pectobacterium</i> and <i>Dickeya</i> Responsible for Potato Blackleg Disease in New York State in 2016
<i>Pectobacterium</i> and <i>Dickeya</i> Responsible for Potato Blackleg Disease in New York State in 2016 Open
Beginning in 2014, outbreaks of blackleg disease compromised potato (Solanum tuberosum) production in the northeastern United States. Disease severity was atypical for plantings with certified seed. During 2016, 43 samples with blackleg sy…
View article: An AlgU-Regulated Antisense Transcript Encoded within the Pseudomonas syringae <i>fleQ</i> Gene Has a Positive Effect on Motility
An AlgU-Regulated Antisense Transcript Encoded within the Pseudomonas syringae <i>fleQ</i> Gene Has a Positive Effect on Motility Open
Production of bacterial flagella is controlled by a multitiered regulatory system that coordinates the expression of 40 to 50 subunits and ordered assembly of these elaborate structures. Flagellar expression is environmentally controlled, …
View article: The ECF sigma factor, PSPTO_1043, in Pseudomonas syringae pv. tomato DC3000 is induced by oxidative stress and regulates genes involved in oxidative stress response
The ECF sigma factor, PSPTO_1043, in Pseudomonas syringae pv. tomato DC3000 is induced by oxidative stress and regulates genes involved in oxidative stress response Open
The bacterial plant pathogen Pseudomonas syringae adapts to changes in the environment by modifying its gene expression profile. In many cases, the response is mediated by the activation of extracytoplasmic function (ECF) sigma factors tha…
View article: Comparative genomics of <i>Pseudomonas syringae</i> pathovar <i>tomato</i> reveals novel chemotaxis pathways associated with motility and plant pathogenicity
Comparative genomics of <i>Pseudomonas syringae</i> pathovar <i>tomato</i> reveals novel chemotaxis pathways associated with motility and plant pathogenicity Open
The majority of bacterial foliar plant pathogens must invade the apoplast of host plants through points of ingress, such as stomata or wounds, to replicate to high population density and cause disease. How pathogens navigate plant surfaces…
View article: Peer Review #1 of "Comparative genomics of Pseudomonas syringae pathovar tomato reveals novel chemotaxis pathways associated with motility and plant pathogenicity (v0.1)"
Peer Review #1 of "Comparative genomics of Pseudomonas syringae pathovar tomato reveals novel chemotaxis pathways associated with motility and plant pathogenicity (v0.1)" Open
The majority of bacterial foliar plant pathogens must invade the apoplast of host plants through points of ingress, such as stomata or wounds, to replicate to high population density and cause disease.How pathogens navigate plant surfaces …
View article: Population-genomic insights into emergence, crop adaptation and dissemination of Pseudomonas syringae pathogens
Population-genomic insights into emergence, crop adaptation and dissemination of Pseudomonas syringae pathogens Open
Many bacterial pathogens are well characterized but, in some cases, little is known about the populations from which they emerged. This limits understanding of the molecular mechanisms underlying disease. The crop pathogen Pseudomonas syri…
View article: Comparative genomics of <i>Pseudomonas syringae</i> pathovar <i>tomato</i> reveals novel chemotaxis pathways associated with motility and plant pathogenicity
Comparative genomics of <i>Pseudomonas syringae</i> pathovar <i>tomato</i> reveals novel chemotaxis pathways associated with motility and plant pathogenicity Open
The majority of bacterial foliar plant pathogens must invade the apoplast of host plants through points of ingress, such as stomata or wounds, to replicate to high population density and cause disease. How pathogens navigate plant surfaces…
View article: Comparative genomics of <i>Pseudomonas syringae</i> pathovar<i> tomato</i> reveals novel chemotaxis pathways associated with motility and plant pathogenicity
Comparative genomics of <i>Pseudomonas syringae</i> pathovar<i> tomato</i> reveals novel chemotaxis pathways associated with motility and plant pathogenicity Open
The majority of bacterial foliar plant pathogens must invade the apoplast of host plants through points of ingress, such as stomata or wounds, to replicate to high population density and cause disease. How pathogens navigate plant surfaces…
View article: AlgU Controls Expression of Virulence Genes in Pseudomonas syringae pv. tomato DC3000
AlgU Controls Expression of Virulence Genes in Pseudomonas syringae pv. tomato DC3000 Open
Plant-pathogenic bacteria are able to integrate information about their environment and adjust gene expression to provide adaptive functions. AlgU, an extracytoplasmic function (ECF) sigma factor encoded by Pseudomonas syringae , controls …