Plant Pathogenic Bacteria Studies

Identification of protein secretion systems and type III effectors in wood-associated bacteria of the genus Xylophilus

The paper identifies type III secretion systems and effectors in Xylophilus bacteria, revealing differences between plant pathogens and non-host isolates.

A genome-scale metabolic model of a pathosystem sheds new light on bacterial wilt

The paper constructs a genome-scale metabolic model of the Ralstonia pseudosolanacearum-tomato pathosystem to quantify trophic interactions during infection, revealing key constraints on bacterial growth and plant responses.

Diverse conjugative and mobilisable elements underpin key adaptive traits in Xanthomonas

The paper identifies diverse mobile genetic elements in Xanthomonas species and their role in adaptive traits through comparative genomic analysis.

Pyramiding four genes governing bacterial blight resistance in three popular rice varieties of East Africa and Madagascar

The paper uses marker-assisted breeding to pyramid four resistance genes into three East African rice varieties to confer resistance to bacterial blight strains.

Rice bacterial blight resistance in Burkina Faso through genome editing: Evaluating pathogen and agro-morphological compatibility of genome-edited elite rice varieties

This study evaluates genome-edited rice varieties for resistance to bacterial blight in Burkina Faso, finding no growth penalties and resistance to local strains.

Defining the Xanthomonas euvesicatoria type II-secreted effector arsenal: core nutritional functions and effector diversity

This study identifies T2S-dependent effector proteins in Xanthomonas species and reveals their role in cell wall remodeling and metabolic activities during plant infection.

The two-component regulator CvsR has a small core regulon in planta and modulates Pseudomonas syringae global gene expression with some overlap to the pattern triggered immunity stimulon response.

This study shows that CvsR in Pseudomonas syringae regulates a small core gene set in planta, with most transcriptional changes due to host immune responses rather than direct CvsR control.

Biosynthetic gene clusters in Pseudomonas viridiflava have a fitness cost during Arabidopsis thaliana infection

The paper investigates biosynthetic gene clusters in Pseudomonas viridiflava and finds most reduce bacterial fitness during Arabidopsis thaliana infection, suggesting specialized metabolites may be more relevant for microbe-microbe interactions.

The efficiency of different transmission routes of Xanthomonas citri pv. fuscans and other seed-borne bacteria to bean seeds.

The paper quantifies the efficiency of different transmission routes for Xanthomonas citri pv. fuscans and other seed-borne bacteria to bean seeds, finding the vascular route most efficient and identifying plant immunity as a bottleneck.

Description of two novel non-pathogenic tomato-associated Clavibacter species: Clavibacter seminis sp. nov. and Clavibacter quasicaliforniensis sp. nov.

This paper describes two new non-pathogenic Clavibacter species isolated from tomato, using genomic analysis and phylogenetic methods to classify them.

Expression of the βhpmeh gene in transgenic events of the potato variety Desiree increases resistance to bacterial wilt caused by Ralstonia solanacearum

This study evaluates βhpmeh transgenic potato plants for resistance to bacterial wilt caused by Ralstonia solanacearum, finding reduced susceptibility correlated with βhpmeh gene expression.

Xanthomonas type III effector XopN targets scaffold protein OsRACK1B to suppress rice immunity

This study identifies XopN as a Xanthomonas effector that suppresses rice immunity by interacting with OsRACK1B and disrupting its immune complex with OsRap2.6.

Morphology of petiole bending, senescence, epinasty, along with necrotic scarring in tomato leaves infiltrated with virulent Ralstonia pseudosolanacearum

This study observes specific patho-phenotypes in tomato leaves infiltrated with Ralstonia pseudosolanacearum, including petiole bending, epinasty, and senescence, which are hrp-dependent and not seen with other bacteria.

Xanthomonas translucens inhibits defense responses independently of the Type III secretion system and is recognized by cereal the immune system

This study investigates Xanthomonas translucens' disease mechanisms in cereals, showing that xanthan suppresses host immunity while the Type III Secretion System is not sufficient for disease development.

Danish profile of soft rot Pectobacteriaceae; A three-year field sampling study proving several clonal clades of soft rot isolates across diverse locations implicating a common origin

The paper uses whole genome sequencing of soft rot Pectobacteriaceae isolates from Danish potato farms to trace disease spread and identify potential phage-based biocontrol strategies.

Mutations in bacterial regulatory genes are linked with chronic ash tree infections

This study identifies mutations in regulatory genes of Pseudomonas savastanoi pv. fraxini strains associated with chronic ash tree infections and phenotypic diversity.

Carbohydrate active enzymes in Pectobacteriaceae: coevolving enzyme sets and host adaptation

The paper catalogs and analyzes CAZyme complements in Pectobacterium and Dickeya genomes, finding coevolution of CAZymes linked to host adaptation and tissue preference.

Metagenomics for bacterial spot pathogen and virulence factor tracking for Ohio fresh market tomato and pepper production

The paper develops and validates a metagenomics workflow to identify bacterial spot pathogens and virulence factors in Ohio tomato and pepper production using shotgun sequencing.

Phylogenomic Taxonomic Analysis of Ralstonia solanacearum Strains causing Bacterial Wilt Disease in Northeastern Argentina.

This paper analyzes genomic data from Ralstonia solanacearum strains in Argentina, revealing two closely related phylotype IIA lineages and highlighting issues with current sequevar classification.

The AltR transcription factor responds to plant thiosulfinates to regulate gene expression in a bacterial pathogen of onion.

This study identifies AltR, a transcription factor in Pantoea ananatis, which regulates thiosulfinate tolerance and pathogenicity in response to plant-derived antimicrobials.

Bacteria use processing body condensates to attenuate host translation during infection

This study shows pathogenic bacteria inhibit host translation by targeting processing bodies and reveals a link between ER stress, autophagy, and P-body dynamics.

Genomic Insights into a Multispecies Bacterial Pathogen Complex Driving Bacterial Blotch in White Button Mushrooms.

This study identifies a multispecies bacterial complex causing bacterial blotch in white button mushrooms, revealing Pseudomonas azotoformans as a prevalent and previously unassociated pathogen.

Managing the phyllosphere: Agronomic practices influence the ecology and evolution of Pseudomonas syringae in cherry orchards

This study shows that polytunnel covering reduces Pseudomonas syringae dispersal and alters phyllosphere communities, while nitrogen fertigation improves plant growth and reduces disease severity in cherry orchards.

Soil-based disease bioassay for the study of rhizogenic Agrobacterium-tomato interactions

The paper develops a soil-based bioassay to study rhizogenic Agrobacterium-tomato interactions, showing it can assess disease symptoms and differentiate virulence among strains.

Integration spots organize genome plasticity and shape accessory-genome architecture in Ralstonia solanacearum

The paper integrates genome data from Ralstonia solanacearum to identify integration spots linked to adaptive functions and genome plasticity.

SpoT-mediated reduction of (p)ppGpp levels promotes Ralstonia pseudosolanacearum adaptation to both plant xylem and legume nodules

This study identifies mutations in spoT that reduce (p)ppGpp levels, enhancing Ralstonia pseudosolanacearum adaptation to plant xylem and legume nodules without compromising virulence.

Lifestyle-associated variation in type IV secretion systems between phytopathogenic and environmental Ralstonia

This study compares T4SS diversity between phytopathogenic and environmental Ralstonia species, finding more T4SS clusters in environmental strains and identifying a specialized cluster in phytopathogens.

Evolutionary and functional genomics reveal that Ralstonia wilt pathogens actively deploy antimicrobial warfare while leveraging physiological adaptations during plant infection

The paper uses genetic screens to identify fitness factors in Ralstonia pathogens during plant infection, revealing both conserved and lineage-specific adaptations.

Multifaceted roles of extracellular vesicles in Agrobacterium fabrum C58 lifestyles

This study shows that Agrobacterium fabrum C58 uses extracellular vesicles to deliver virulence effectors and toxins, influencing plant hosts and environmental bacteria.

Morphology of softening and translucency in the stems of tomato and eggplant seedlings due to infection by Ralstonia pseudosolanacearum F1C1

This study examines the symptoms of Ralstonia pseudosolanacearum F1C1 infection in tomato and eggplant seedlings, identifying stem softening and translucency as a novel symptom, and explores host resistance mechanisms.