دورية أكاديمية
Unusual extracellular appendages deployed by the model strain Pseudomonas fluorescens C7R12.
| العنوان: | Unusual extracellular appendages deployed by the model strain Pseudomonas fluorescens C7R12. |
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| المؤلفون: | Dorian Bergeau, Sylvie Mazurier, Corinne Barbey, Annabelle Merieau, Andrea Chane, Didier Goux, Sophie Bernard, Azeddine Driouich, Philippe Lemanceau, Maïté Vicré, Xavier Latour |
| المصدر: | PLoS ONE, Vol 14, Iss 8, p e0221025 (2019) |
| بيانات النشر: | Public Library of Science (PLoS), 2019. |
| سنة النشر: | 2019 |
| المجموعة: | LCC:Medicine LCC:Science |
| مصطلحات موضوعية: | Medicine, Science |
| الوصف: | Pseudomonas fluorescens is considered to be a typical plant-associated saprophytic bacterium with no pathogenic potential. Indeed, some P. fluorescens strains are well-known rhizobacteria that promote plant growth by direct stimulation, by preventing the deleterious effects of pathogens, or both. Pseudomonas fluorescens C7R12 is a rhizosphere-competent strain that is effective as a biocontrol agent and promotes plant growth and arbuscular mycorrhization. This strain has been studied in detail, but no visual evidence has ever been obtained for extracellular structures potentially involved in its remarkable fitness and biocontrol performances. On transmission electron microscopy of negatively stained C7R12 cells, we observed the following appendages: multiple polar flagella, an inducible putative type three secretion system typical of phytopathogenic Pseudomonas syringae strains and densely bundled fimbria-like appendages forming a broad fractal-like dendritic network around single cells and microcolonies. The deployment of one or other of these elements on the bacterial surface depends on the composition and affinity for the water of the microenvironment. The existence, within this single strain, of machineries known to be involved in motility, chemotaxis, hypersensitive response, cellular adhesion and biofilm formation, may partly explain the strong interactions of strain C7R12 with plants and associated microflora in addition to the type three secretion system previously shown to be implied in mycorrhizae promotion. |
| نوع الوثيقة: | article |
| وصف الملف: | electronic resource |
| اللغة: | English |
| تدمد: | 1932-6203 |
| العلاقة: | https://doaj.org/toc/1932-6203Test |
| DOI: | 10.1371/journal.pone.0221025 |
| الوصول الحر: | https://doaj.org/article/d7a0639d3a2b4bc8b7dcb0301ab755aaTest |
| رقم الانضمام: | edsdoj.7a0639d3a2b4bc8b7dcb0301ab755aa |
| قاعدة البيانات: | Directory of Open Access Journals |
Full Text Finder | تدمد: | 19326203 |
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| DOI: | 10.1371/journal.pone.0221025 |