ArticleFrontiers in plant science2015
Supramolecular Structure and Functional Analysis of the Type III Secretion System in Pseudomonas fluorescens 2P24.
Article in Frontiers in plant science, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.
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19 citing papers in PubMed, 21 citations in OpenAlex.
- Type III secretion system diversity in the Pseudomonas fluorescens species complex.The New phytologist · 2026Article
- Deciphering the role of SsaE in biofilm regulation and T3SS-dependent virulence of Salmonella Typhimurium.World journal of microbiology & biotechnology · 2025Article
- Diversity of bradyrhizobial T3SS systems and their roles in symbiosis with peanut (Applied and environmental microbiology · 2025Article
- Type III Secretion System-Mediated Induction of Systemic Resistance byPlants (Basel, Switzerland) · 2025Article
- Beyond pathogenicity: the immunomodulatory role of the type III secretion system in beneficial plant-microbe interactions.Open biology · 2025Review
- Differential plant cell responses tomBio · 2023Article
- Effects of a Microbial Restoration Substrate on Plant Growth and Rhizosphere Microbial Community in a Continuous Cropping Poplar.Microorganisms · 2023Article
- Repertoire and abundance of secreted virulence factors shape the pathogenic capacity ofFrontiers in microbiology · 2023Article
- Article
- Bridging the Gap: Type III Secretion Systems in Plant-Beneficial Bacteria.Microorganisms · 2022Article
- NovelFrontiers in microbiology · 2022Article
- Characterization of the SPI-1 Type III Secretion System inFrontiers in microbiology · 2021Article
- Genomic insights into a plant growth-promoting Pseudomonas koreensis strain with cyclic lipopeptide-mediated antifungal activity.MicrobiologyOpen · 2020Article
- Identification and Functional Analysis of AopN, anInternational journal of molecular sciences · 2020Article
- Tailoring plant-associated microbial inoculants in agriculture: a roadmap for successful application.Journal of experimental botany · 2020Review
- Article
- Type III Secretion System of Beneficial RhizobacteriaFrontiers in microbiology · 2019Article
- Unusual extracellular appendages deployed by the model strain Pseudomonas fluorescens C7R12.PloS one · 2019Article
- Involvement ofFrontiers in microbiology · 2018Article
Corrections and comments
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Authors and funding
5 authors at 4 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
The type III secretion system (T3SS) of plant and animal bacterial pathogens directs the secretion and injection of proteins into host cells. Some homologous genes of T3SS were found also in non-pathogenic bacteria, but the organization of its machinery and basic function are still unknown. In this study, we identified a T3SS gene cluster from the plant growth-promoting Pseudomonas fluorescens 2P24 and isolated the corresponding T3SS apparatus. The T3SS gene cluster of strain 2P24 is similar organizationally to that of pathogenic P. syringae, except that it lacks the regulator hrpR and the hrpK1 and hrpH genes, which are involved in translocation of proteins. Electron microscopy revealed that the T3SS supramolecular structure of strain 2P24 was comprised of two distinctive substructures: a long extracellular, filamentous pilus, and a membrane-embedded base. We show that strain 2P24 deploys a harpin homolog protein, RspZ1, to elicit a hypersensitive response when infiltrated into Nicotiana tabacum cv. xanthi leaves with protein that is partially purified, and by complementing the hrpZ1 mutation of pHIR11. The T3SS of strain 2P24 retained ability to secrete effectors, whereas its effector translocation activity appeared to be excessively lost. Mutation of the rscC gene from 2P24 T3SS abolished the secretion of effectors, but the general biocontrol properties were unaffected. Remarkably, strain 2P24 induced functional MAMP-triggered immunity that included a burst of reactive oxygen species, strong suppression of challenge cell death, and disease expansion, while it was not associated with the secretion functional T3SS.
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