ArticleJournal of experimental botany2022
Pseudomonas syringae addresses distinct environmental challenges during plant infection through the coordinated deployment of polysaccharides.
Article in Journal of experimental botany, 2022. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers.
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Who cites it
8 citing papers in PubMed.
- Spatiotemporal coordination of virulence, metabolism, and stress responses shapes infection dynamics ofApplied and environmental microbiology · 2026Article
- Coupled rhizosphere application of cyanobacteria-bamboo acid hydrolysis extract and cyanobacterial biochar enhances soil health and crop quality.Bioresources and bioprocessing · 2026Article
- New Technology for the Production of Transparent Glass Coatings from Multi-Alloy Targets with Antibacterial Activity.Materials (Basel, Switzerland) · 2026Article
- Antagonistic endophytes rescue ginger from bacterial wilt by enriching the beneficial root-associated bacteria and regulating antibacterial root exudates.Frontiers in microbiology · 2026Article
- Some Like it Hot: Efficiency of the Type III Secretion System has Multiple Thermosensitive Behaviours in the Pseudomonas syringae Complex.Molecular plant pathology · 2025Article
- Biofilm as a Key Element in the Bacterial Pathogenesis of Forest Trees: A Review of Mechanisms and Ecological Implications.Microorganisms · 2025Review
- Scientific and technological advances in the development of sustainable disease management tools: a case study on kiwifruit bacterial canker.Frontiers in plant science · 2023Review
- Beyond Soil-Dwelling Actinobacteria: Fantastic Antibiotics and Where to Find Them.Antibiotics (Basel, Switzerland) · 2022Review
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Authors and funding
6 authors.
Funding
Abstract
Prior to infection, phytopathogenic bacteria face a challenging environment on the plant surface, where they are exposed to nutrient starvation and abiotic stresses. Pathways enabling surface adhesion, stress tolerance, and epiphytic survival are important for successful plant pathogenesis. Understanding the roles and regulation of these pathways is therefore crucial to fully understand bacterial plant infections. The phytopathogen Pseudomonas syringae pv. tomato (Pst) encodes multiple polysaccharides that are implicated in biofilm formation, stress survival, and virulence in other microbes. To examine how these polysaccharides impact Pst epiphytic survival and pathogenesis, we analysed mutants in multiple polysaccharide loci to determine their intersecting contributions to epiphytic survival and infection. In parallel, we used qRT-PCR to analyse the regulation of each pathway. Pst polysaccharides are tightly coordinated by multiple environmental signals. Nutrient availability, temperature, and surface association strongly affect the expression of different polysaccharides under the control of the signalling protein genes ladS and cbrB and the second messenger cyclic-di-GMP. Furthermore, functionally redundant, combinatorial phenotypes were observed for several polysaccharides. Exopolysaccharides play a role in mediating leaf adhesion, while α-glucan and alginate together confer desiccation tolerance. Our results suggest that polysaccharides play important roles in overcoming environmental challenges to Pst during plant infection.
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