Plant Pathogenic Bacteria Studies

The periplasmic substrate-binding protein ThuE is required for sucrose uptake and multiplication of Pseudomonas syringae pv. tomato DC3000 in tomato leaves

Mobile genetic elements accompany the emergence of clonal crop lineages from weed-associated populations of Xanthomonas campestris

The paper analyzes Xanthomonas campestris strains from weed and crop hosts to show that mobile genetic elements accompany the emergence of clonal crop lineages and are present in diverse weed-associated strains.

Lipopolysaccharide Precursor Mutants Disrupt Unipolar Polysaccharide Adhesin Synthesis and Cell Surface Functions in Agrobacterium tumefaciens

This study identifies rfbA and rfbD genes critical for UPPGalN biosynthesis in Agrobacterium tumefaciens, revealing their role in cell surface functions, motility, and biofilm formation.

First Report of Soft Rot Caused by Pectobacterium brasiliense on Summer Squash in Mississippi, USA

The paper identifies Pectobacterium brasiliense as a new pathogen causing soft rot in summer squash in Mississippi using phenotypic and molecular methods.

An infection assay recapitulating Xanthomonas translucens pv. translucens natural entry into barley hydathodes

This study establishes a protocol for hydathode infection by Xtt in barley, causing bacterial blight symptoms and mimicking natural infection.

Mutation in Ralstonia pseudosolanacearum F1C1 cytochrome p450 homologue impairs virulence through root but not through shoot of tomato plants

Contrasting gene gain and loss shape metabolic diversification in the Ralstonia solanacearum species complex

The paper identifies gene gain and loss mechanisms shaping metabolic diversity in Ralstonia solanacearum by analyzing genomic data and phylogenomics.

Comparative functional genomics of six Pectobacterium species reveals core and unique fitness determinants in potato tubers

This study identifies conditionally essential genes in six Pectobacterium species during potato tuber infection, revealing shared and unique fitness determinants.

The ArcZ small RNA activates SlyA production to control contact-dependent antibacterial killing and diffusible antifungal activity in Dickeya solani

The paper identifies an sRNA regulatory cascade in Dickeya solani that controls both antifungal and antibacterial activities by activating SlyA translation.

Comparative essentialome analysis of six Pectobacteriaceae strains using the TNSEEK pipeline identifies conserved and strain-specific fitness determinants

The paper develops TNSEEK, a pipeline for analyzing Tn-seq data across multiple bacterial strains, identifying conserved and strain-specific essential genes in Pectobacteriaceae.

Distinct Temporal Responses to Xanthomonas translucens Strains Shape Bacterial Leaf Streak Development in Triticale

This study shows that distinct temporal host transcriptional responses to two Xanthomonas translucens strains influence bacterial leaf streak development in triticale.

The virulence and motility of Pseudomonas syringae pv. Actinidiae mediated by a temperature sensor HktS-HktR

This study identifies HktS-HktR as a temperature sensor in Psa that regulates virulence and motility by controlling T3SS expression and bacterial movement.

A Xanthomonas effector protein contributes quantitatively to virulence by inducing at least three minor Susceptibility genes

This study identifies three susceptibility genes in cauliflower that contribute to disease caused by Xanthomonas campestris pv. campestris through Tal12a-mediated transcriptional changes.

Pseudomonas effector AvrC is a rhamnosyltransferase with broad substrate specificity

The paper identifies AvrC as a rhamnosyltransferase with broad substrate specificity, showing it can modify plant proteins like RIN4, COPE1, and COPZ1.

Ecogenomic Diversity of Clavibacter nebraskensis in North America

This study characterizes genomic and functional diversity of Clavibacter nebraskensis using long-read sequencing and phenotypic assays, revealing ecologically distinct populations linked to virulence and survival strategies.

Insights into the transmission of seedborne Pseudomonas syringae strains that cause zucchini diseases.

The paper investigates the transmission routes of Pseudomonas syringae strains causing zucchini diseases, finding that VCZ strains are predominantly transmitted via floral pathways while BLS strains use pericarp transmission.

Evidence for Burkholderia gladioli pv. alliicola Extracellular Detoxification of Thiosulfinates

This study shows that Burkholderia gladioli pv. alliicola detoxifies thiosulfinates during onion bulb infection but not foliar infection, using a reporter strain to track exposure.

Genomic plasticity and homologous recombination drive the evolution of Pectobacterium jejuense across hosts and geographic regions

This study analyzes the genomic diversity and evolutionary dynamics of Pectobacterium jejuense across hosts and geographic regions, revealing homologous recombination and genome plasticity as key drivers of adaptation and pathogenic evolution.

Phylogenomics and comparative genomics of the genus Erwinia reveal taxonomic inconsistencies and evolutionary diversification

This study uses phylogenomic and comparative genomic analyses of 104 Erwinia genomes to resolve evolutionary relationships, identify taxonomic inconsistencies, and uncover lineage-specific genomic features associated with virulence and ecological adaptation.

Spatial and temporal localization of Serratia ureilytica causing cucurbit yellow vine disease in cucurbits indicates phloem-associated colonization and systemic movement

This study tracks Serratia ureilytica in cucurbit plants, showing its localization in phloem-associated cells and systemic movement.

Allelic Diversity and Core Conservation of Type III Effectors Across Xanthomonads Causing Bacterial Spot of Pepper and Tomato

The paper characterizes type III effector diversity and conservation across Xanthomonas pathogens causing bacterial spot of pepper and tomato, revealing core effectors and population-specific variation.

Tomato brown rugose fruit virus and pepino mosaic virus differentially modulate disease severity of bacterial pith necrosis and bacterial canker in tomato

This study shows that ToBRFV and PepMV differentially affect bacterial disease severity in tomatoes, either increasing or decreasing symptom expression depending on the pathogen.

Interspecies exchange of a mobile genetic element during a plant disease outbreak

The paper investigates an outbreak of plant disease caused by two Ralstonia species, identifying mobile genetic elements responsible for interspecies gene exchange and disease spread.

Leaf hydraulics is a core component of plant immunity

The paper shows hydathodes are both entry points for pathogens and critical for limiting their spread in plant leaves.

Solanum americanum Bs2 and ZAR1 homologs recognize Xanthomonas euvesicatoria effectors essential for infection.

The paper identifies Xanthomonas euvesicatoria effectors recognized by Solanum americanum immune receptors, showing their role in effector-triggered immunity and bacterial infection.

Spatio-temporal coordination of virulence, metabolism, and stress responses shapes infection dynamics of Xanthomonas perforans

This study examines how Xanthomonas perforans adapts its gene expression across different plant niches and infection stages to coordinate virulence, metabolism, and stress responses.

FIRST EVIDENCE OF PRESENCE OF RALSTONIA SOLANACEARUM IN THRIPS HAWAIIENSIS (THYSANOPTERA: THRIPIDAE) IN INDANG, CAVITE

This study provides field evidence that Thrips hawaiiensis can acquire Ralstonia solanacearum from infected banana flowers, supporting its role as a potential vector for Bugtok disease in cooking bananas.

A conserved Rhs module associated with the type VI secretion system facilitates effector innovation and immunity acquisition for ecological adaptation of Stenotrophomonas species

This study identifies a conserved Rhs module in Stenotrophomonas species linked to T6SS effector innovation and immunity, enabling ecological adaptation in saline niches.

Host infection selects for sRNA variants that drive bacterial social cheating

The paper shows that single-nucleotide mutations in the sRNA ArcZ of Dickeya solani generate social cheater variants during potato infection, which exploit a shared metabolic benefit without contributing to it.

It takes two: A Widespread Temperate Bacteriophage Contributes to Regulation of the Type III Secretion System in Pseudomonas syringae

The paper shows a temperate bacteriophage in Pseudomonas syringae enhances virulence by altering T3SS operon expression, independent of its effector gene.