ArticleScientific reports2020
Expansin-like Exl1 from Pectobacterium is a virulence factor required for host infection, and induces a defence plant response involving ROS, and jasmonate, ethylene and salicylic acid signalling pathways in Arabidopsis thaliana.
Article in Scientific reports, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.
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13 citing papers in PubMed, 27 citations in OpenAlex.
- Exl1 from Pectobacterium activates a jasmonate-dependent immune network in Arabidopsis thaliana.Plant molecular biology · 2026Article
- Microorganisms' perception, scavenging, and adaptation to reactive oxygen species signals in microbe-plant interactions.World journal of microbiology & biotechnology · 2025Review
- Linking the interaction of Salicylates and Jasmonates for stress resilience in plants.Stress biology · 2025Review
- Comparative transcriptome analysis reveals defense responses against soft rot induced by Pectobacterium aroidearum and Pectobacterium carotovorum in Pinellia ternata.BMC genomics · 2024Article
- Article
- Bacterial surface-exposed lipoproteins and sortase-mediated anchored cell surface proteins in plant infection.MicrobiologyOpen · 2023Review
- Biomechanical Weakening of Paper and Plant Cell Walls by Bacterial Expansins.Methods in molecular biology (Clifton, N.J.) · 2023Article
- Plant Cell Wall Integrity Perturbations and Priming for Defense.Plants (Basel, Switzerland) · 2022Review
- Prevalent association with the bacterial cell envelope of prokaryotic expansins revealed by bioinformatics analysis.Protein science : a publication of the Protein Society · 2022Article
- Mechanisms of plant cell wall surveillance in response to pathogens, cell wall-derived ligands and the effect of expansins to infection resistance or susceptibility.Frontiers in plant science · 2022Review
- Identification of new Dickeya dadantii virulence factors secreted by the type 2 secretion system.PloS one · 2022Article
- Article
- A horizontally acquired expansin gene increases virulence of the emerging plant pathogen Erwinia tracheiphila.Scientific reports · 2020Article
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Authors and funding
9 authors at 3 institutions in 3 countries.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Expansins are encoded by some phytopathogenic bacteria and evidence indicates that they act as virulence factors for host infection. Here we analysed the expression of exl1 by Pectobacterium brasiliense and Pectobacterium atrosepticum. In both, exl1 gene appears to be under quorum sensing control, and protein Exl1 can be observed in culture medium and during plant infection. Expression of exl1 correlates with pathogen virulence, where symptoms are reduced in a Δexl1 mutant strain of P. atrosepticum. As well as Δexl1 exhibiting less maceration of potato plants, fewer bacteria are observed at distance from the inoculation site. However, bacteria infiltrated into the plant tissue are as virulent as the wild type, suggesting that this is due to alterations in the initial invasion of the tissue. Additionally, swarming from colonies grown on MacConkey soft agar was delayed in the mutant in comparison to the wild type. We found that Exl1 acts on the plant tissue, probably by remodelling of a cell wall component or altering the barrier properties of the cell wall inducing a plant defence response, which results in the production of ROS and the induction of marker genes of the JA, ET and SA signalling pathways in Arabidopsis thaliana. Exl1 inactive mutants fail to trigger such responses. This defence response is protective against Pectobacterium brasiliense and Botrytis cinerea in more than one plant species.
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