ArticleApplied and environmental microbiology2016
Involvement of the Type IX Secretion System in Capnocytophaga ochracea Gliding Motility and Biofilm Formation.
Article in Applied and environmental microbiology, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 31 papers.
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31 citing papers in PubMed, 54 citations in OpenAlex.
- Human Infections Caused by Flavobacteriales: Clinical Characteristics and Antimicrobial Susceptibility Patterns.Infectious disease reports · 2026Review
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- Bioprospecting of the Phylum Bacteroidota for Sustainable Agriculture.Plants (Basel, Switzerland) · 2026Review
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- Swarming bacteria exhibit developmental phase transitions to establish scattered colonies in new regions.The ISME journal · 2025Article
- Identification of nanaomycin A and its analogs by a newly established screening method for functional inhibitors of the type IX secretion system in Porphyromonas gingivalis.The Journal of antibiotics · 2025Article
- Structural and functional insights into the C-terminal signal domain of the Bacteroidetes type-IX secretion system.Open biology · 2024Article
- Ecological, beneficial, and pathogenic functions of the Type 9 Secretion System.Microbial biotechnology · 2024Review
- The Plant-Associated Flavobacterium: A Hidden Helper for Improving Plant Health.The plant pathology journal · 2024Review
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- Novel biological aqua crust enhances in situ metal(loid) bioremediation driven by phototrophic/diazotrophic biofilm.Microbiome · 2023Article
- Live Cell Imaging of Gliding Motility of Flavobacterium johnsoniae Under High-Resolution Microscopy.Methods in molecular biology (Clifton, N.J.) · 2023Article
- Assessing potential impact of gut microbiome disruptions on the environmental stress resilience of indoor-reared Bombus terrestris.PloS one · 2023Article
- Dynamic proton-dependent motors power type IX secretion and gliding motility in Flavobacterium.PLoS biology · 2022Article
- Design Principles of the Rotary Type 9 Secretion System.Frontiers in microbiology · 2022Review
- PPAD Activity Promotes Outer Membrane Vesicle Biogenesis and Surface Translocation by Porphyromonas gingivalis.Journal of bacteriology · 2021Article
- The Type 9 Secretion System Is Required forFrontiers in microbiology · 2021Article
- Article
- The Carboxy-Terminal Region of Flavobacterium johnsoniae SprB Facilitates Its Secretion by the Type IX Secretion System and Propulsion by the Gliding Motility Machinery.Journal of bacteriology · 2019Article
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Authors and funding
7 authors at 2 institutions in 1 country.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Capnocytophaga ochracea is a Gram-negative, rod-shaped bacterium that demonstrates gliding motility when cultured on solid agar surfaces. C. ochracea possesses the ability to form biofilms; however, factors involved in biofilm formation by this bacterium are unclear. A type IX secretion system (T9SS) in Flavobacterium johnsoniae was shown to be involved in the transport of proteins (e.g., several adhesins) to the cell surface. Genes orthologous to those encoding T9SS proteins in F. johnsoniae have been identified in the genome of C. ochracea; therefore, the T9SS may be involved in biofilm formation by C. ochracea. Here we constructed three ortholog-deficient C. ochracea mutants lacking sprB (which encodes a gliding motility adhesin) or gldK or sprT (which encode T9SS proteins in F. johnsoniae). Gliding motility was lost in each mutant, suggesting that, in C. ochracea, the proteins encoded by sprB, gldK, and sprT are necessary for gliding motility, and SprB is transported to the cell surface by the T9SS. For the ΔgldK, ΔsprT, and ΔsprB strains, the amounts of crystal violet-associated biofilm, relative to wild-type values, were 49%, 34%, and 65%, respectively, at 48 h. Confocal laser scanning and scanning electron microscopy revealed that the biofilms formed by wild-type C. ochracea were denser and bacterial cells were closer together than in those formed by the mutant strains. Together, these results indicate that proteins exported by the T9SS are key elements of the gliding motility and biofilm formation of C. ochracea.
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