Plant Pathogenic Bacteria Studies

The Specific Genetic Markers to Diagnose Xanthomonads Infecting Pepper and Tomato Plants

The paper develops a marker system using microsatellite and RFLP methods to distinguish Xanthomonas species infecting pepper and tomato plants.

Multiple effectors trigger nonhost resistance in Solanum americanum against Pseudomonas syringae

This study identifies multiple effectors from Pseudomonas syringae that trigger nonhost resistance in Solanum americanum, with HopM1 and AvrE1 being essential for virulence.

The fire blight pathogen Erwinia amylovora enters apple leaves through naturally-occurring wounds from the abscission of trichomes

This study identifies a novel entry pathway for the fire blight pathogen Erwinia amylovora into apple leaves through trichome abscission wounds.

The Ralstonia solanacearum effector RipAV targets Plant U-box proteins and induces proteasomal-dependent degradation of BIK1

This study identifies RipAV, an effector from Ralstonia solanacearum, as a protein that targets plant PUB proteins and CPK28 to suppress immunity by promoting BIK1 degradation.

Chemoreceptor family in plant-associated bacteria responds preferentially to the plant signal molecule glycerol 3-phosphate

This study identifies a chemoreceptor family in plant-associated bacteria that specifically responds to glycerol 3-phosphate, a plant stress signal, and shows its evolutionary origin and ecological relevance.

Plasmid copy number variation impacts pathogenicity and quantification of Curtobacterium flaccumfaciens pv. flaccumfaciens infecting mung bean

Comparative Transcriptomics Reveals Context- and Strain-Specific Regulatory Programs of Agrobacterium During Plant Colonization

This paper compares transcriptomic responses of Agrobacterium strains under in vitro and in planta conditions, revealing strain-specific and context-dependent gene regulation during plant colonization.

Rapid population flux in bacterial spot xanthomonads during a transition in dominance between two genotypes in consecutive tomato production seasons and identification of a new species Xanthomonas oklahomensis sp. nov.

The paper tracks population shifts between Xanthomonas species during tomato bacterial spot outbreaks and identifies a new species, Xanthomonas oklahomensis.

PmeR, a TetR-like transcriptional regulator, is involved in both auxin signaling and virulence in the plant pathogen Pseudomonas syringae strain PtoDC3000.

This paper identifies PmeR, a TetR-like transcriptional regulator in Pseudomonas syringae, as a key factor in auxin signaling and virulence, showing it is induced by auxin and regulates auxin-responsive genes.

Development and Application of a Filamentous Phage-Based Rapid Detection Tool for Ralstonia pseudosolanacearum

This paper develops a filamentous phage-based detection tool for Ralstonia pseudosolanacearum, demonstrating rapid and specific detection with bioluminescence genes.

Restricted transmission of Xanthomonas oryzae pv. oryzae from rice roots to shoots detected by a rapid root infection system

The paper establishes a rapid root infection system to study Xoo transmission from rice roots to shoots and finds no progression beyond the coleoptile node.

Secreted LysM proteins are required for niche competition and full virulence in Pseudomonas savastanoi during host plant infection

This study identifies five secreted LysM proteins in Pseudomonas savastanoi essential for virulence, motility, cell division, and microbial competition during plant infection.

New resistance to bacterial wilt in heat-stressed tomato is revealed by two-reference Genome Wide Association

This study identifies 44 candidate genes for temperature-stable resistance to bacterial wilt in tomato using a new panel and two-reference genome approach.

The Ralstonia solanacearum E3 ligase effector RipV1 targets subfamily IXb receptor-like cytoplasmic kinases that negatively regulate immunity in Nicotiana benthamiana.

This study identifies RLCK-IXb proteins as targets of the Ralstonia solanacearum effector RipV1, revealing their role as negative regulators of plant immunity.

Interaction between climatic variation and pathogen diversity shape endemic disease dynamics in the agricultural settings

This study shows how pathogen genetic diversity and climatic variation interact to influence disease outbreaks in agricultural settings using high-resolution sequencing and analysis.

Tissue-dependent nature of plant susceptibility: a comparative pathogenicity study of the systemic phytopathogen Ralstonia pseudosolanacearum in eggplant and tomato seedlings through root and leaf

This study compares the susceptibility of tomato and eggplant seedlings to Ralstonia pseudosolanacearum through leaf and root inoculation, revealing tissue-dependent differences in pathogen response.

Arabidopsis CNL receptor SUT1 confers immunity in hydathodes against the vascular pathogen Xanthomonas campestris pv. campestris

This study identifies SUT1 as a novel immune receptor in Arabidopsis hydathodes that confers resistance to Xcc, effective during early infection but not in vascular tissues.

Dickeya ananae sp. nov., pectinolytic bacterium isolated from pineapple (Ananas comosus)

The paper describes the discovery of a new Dickeya species, Dickeya ananae, based on genomic and phylogenetic analyses of strains isolated from pineapple plants.

Natural Language Processing-like Deep Learning Aided in Identification and Validation of Thiosulfinate Tolerance Clusters in Diverse Bacteria

This paper uses NLP-like deep learning to identify and validate novel allicin tolerance gene clusters in bacteria, improving detection of underrepresented clusters.

Clonal expansion from standing genetic variation underpins the evolution of an emerging plant pathogen in Australia

This study shows that clonal expansion from existing genetic variation, not new genotypes, has driven the evolution of Curtobacterium flaccumfaciens pv. flaccumfaciens in Australia since the 1980s.

Acquisition, Evolution, and Diversification of Genomic Islands: A Case Study of a Virulence Gene Cluster in Pseudomonas syringae

The paper traces the evolutionary history of a virulence gene cluster in Pseudomonas syringae, showing its independent acquisition by multiple phylogroups and its role in bacterial fitness.

Pectobacterium versatile beta-lactamase, a common good of the soft rot Pectobacteriaceae species complex

This study investigates the role of BlaPEC-1 beta-lactamase in the Soft Rot Pectobacteriaceae species complex, showing it functions as a public good that supports coexistence and protects sensitive strains during infection.

Insights from modern & historical genomes of Neorhizobium vitis, a new pathogen causing neoplastic growths on grapevine.

The paper identifies Neorhizobium vitis as a new crown gall pathogen in grapevines, showing it lacks known virulence genes but still causes tumours.

Rhs-toxin Abundance, Diversity, and Function in Four Genera of Plant Pathogenic Bacteria: Xanthomonas, Ralstonia, Pectobacterium, and Dickeya.

This study identifies and characterizes Rhs toxins in four plant-pathogenic bacterial genera, revealing their diversity, distribution, and potential functional roles in microbial competition.

Pangenomics to understand prophage dynamics in the Pectobacterium genus and the radiating lineages of P. brasiliense

The paper studies prophage dynamics in Pectobacterium species using a pangenome approach, finding that prophages contribute significantly to genome evolution and lineage diversification.

Ecologically Significant Genetic Loci of P. allii: Contributions to Pathogenesis and Competition

This study analyzes 38 Pantoea allii strains from plants and water across three continents to identify lineage-specific virulence genes and conserved competitive traits.

Discovery of a wide variety of α-1,6-cyclized β-1,2-glucan synthases: a new entrance for host-microbe interactions.

The paper identifies and characterizes α-1,6-cyclized β-1,2-glucan synthases, revealing their role in plant-pathogen interactions and potential applications in agriculture.

Bacterial pathogen deploys iminosugar galactosyrin to manipulate plant glycobiology

This study identifies galactosyrin, an iminosugar produced by Pseudomonas syringae, which inhibits plant β-galactosidase and alters host glycobiology to aid infection.

Plant pathogenic Ralstonia share two core methyl-accepting chemoreceptors that drive chemotaxis toward distinct amino acid profiles

The paper identifies two core methyl-accepting chemoreceptors in Ralstonia pathogens that bind distinct amino acid profiles, with McpA2 showing broader specificity and both contributing to virulence.

Conserved effectors underpin the virulence of liverwort-isolated Pseudomonas in divergent plants

The paper identifies conserved virulence factors in Pseudomonas viridiflava that enable infection of both liverworts and flowering plants.