Aeromonas is a ubiquitous gram-negative bacterium that persists in the environment. It is shown that all isolates of persistent Aeromonas clones show strong biofilm formation ability. C-di-GMP regulates biofilm formation in many bacteria. To investigate the impact of c-di-GMP signaling, we introduced heterologous GGDEF and EAL domain proteins from Salmonella Typhimurium to an Aeromonas veronii biovar sobria strain. Overexpression of the GGDEF domain protein AdrA increased c-di-GMP concentration and biofilm formation and reduced motility. Production of the quorum-sensing signaling molecule C4-homoserine lactone and adhesion to aquatic plant duckweed and amoeba surfaces were enhanced. On the other hand, overexpression of the EAL domain protein YhjH decreased biofilm formation and increased motility.
Download full-text PDF |
Source |
|---|---|
| http://dx.doi.org/10.1111/j.1574-6968.2007.00803.x | DOI Listing |
Publication Analysis
Top Keywords
Similar Publications
Microbe-assisted fabrication of circularly polarized luminescent bacterial cellulosic hybrids.
Nat Commun
January 2025
Faculty of Health Sciences, University of Macau, Taipa, Macau SAR, China.
The fabrications of circularly polarized luminescent (CPL) material are mainly based on the chemical and physical strategies. Controlled biosynthesis of CPL-active materials is beset with difficulties due to the lack of bioactive luminescent precursors and bio-reactors. Enlighted by microbe-assisted asymmetric biosynthesis, herein, we show the in situ bacterial fermentation of Komagataeibacter sucrofermentants to fabricate a series of bacterial cellulosic biofilms with CPL of green, orange, red, and near-infrared colors.
View Article and Find Full Text PDFTime-resolved compositional and dynamics analysis of biofilm maturation and dispersal via solid-state NMR spectroscopy.
NPJ Biofilms Microbiomes
January 2025
Institute of Drug Discovery Technology, Ningbo University, Ningbo, 315211, Zhejiang, China.
Dispersal plays a crucial role in the development and ecology of biofilms. While extensive studies focused on elucidating the molecular mechanisms governing this process, few have characterized the associated temporal changes in composition and structure. Here, we employed solid-state nuclear magnetic resonance (NMR) techniques to achieve time-resolved characterization of Bacillus subtilis biofilms over a 5-day period.
View Article and Find Full Text PDFMedicinal Plants Exhibited Promising Potential to Inhibit Biofilm Formation by Catheter-Associated Bacteria in UTI Patients from Lahore, Pakistan.
J Oleo Sci
January 2025
Department of Physics, College of Science and Humanities in Al-Kharj, Prince Sattam bin Abdulaziz, University.
The current study was designed to evaluate the antibacterial, antibiofilm, and biofilm inhibitory potential of six medicinal plants, including Trachyspermum ammi, Trigonella foenum-graecum, Nigella sativa, Thymus vulgaris, Terminalia arjuna, and Ipomoea carneaid against catheter-associated bacteria (CAB). Eighteen CAB were identified up to species level using 16S rRNA gene sequencing, viz., Klebsiella pneumoniae, Staphylococcus aureus, and Pseudomonas aeruginosa.
View Article and Find Full Text PDFEffects of stratified microbial extracellular polymeric substances on microalgae dominant biofilm formation and nutrients turnover under batch and semi-continuous operation.
Bioresour Technol
January 2025
MOE Key Laboratory of Bio-Intelligent Manufacturing, School of Bioengineering, Dalian University of Technology, Dalian 116024 PR China.
Extracellular polymeric substances (EPS) are well-acknowledged to accelerate microalgal biofilm formation, yet specific role of stratified EPS is unknown. Bacterial biofilm stratified EPS could enrich phosphorus, whether microalgal biofilm stratified EPS could also realize phosphorus or nitrogen enrichment remains unclarified. This study investigated microalgae dominant biofilm growth characteristics and nutrients removal via inoculating microalgae and stratified bacterial EPS at various microalgae:bacteria ratios.
View Article and Find Full Text PDFAntibiofilm mechanism of mouse gastrointestinal stimulation against Vibrio parahaemolyticus under bile salt culture.
Microb Pathog
January 2025
College of Food Science and Technology, Shanghai Ocean University, Shanghai 201306, China; Shanghai Engineering Research Center of Aquatic-Product Processing & Preservation, Shanghai 201306, China; Laboratory of Quality & Safety Risk Assessment for Aquatic Product on Storage and Preservation (Shanghai), Ministry of Agriculture and Rural Affairs, Shanghai 201306, China; Engineering Research Center of Food Thermal-processing Technology, Shanghai Ocean University, Shanghai 201306, China. Electronic address:
Bile salts are crucial microbe-selective inhibitors present in the intestinal tracts of humans and other animals. Environmental and clinical strains of Vibrio parahaemolyticus (V. parahaemolyticus) exhibited different biofilm-forming abilities under bile salt incubation.
View Article and Find Full Text PDFWant AI Summaries of new PubMed Abstracts delivered to your In-box?
Enter search terms and have AI summaries delivered each week - change queries or unsubscribe any time!