Investigation of Bacteria and Fish Pathogenic Bacteria Found in Freshwater Aquaponic System

Antimicrobial Effect of Lactic Acid Bacteria against Common Pathogenic Bacteria

Abstract       Background and Objective: Probiotics are living microorganisms that have beneficial effects on the health of digestive system. The aim of this study was to evaluate the antimicrobial ability of acidic and neutral supernatants (culture supernatant) of lactic acid bacteria against common bacterial pathogens.        Meth...

In vitro antibacterial activity of Peganum harmala (L) extract to some fish pathogenic bacteria

This study was conducted to examine in vitro antibacterialpotential from seed methanol extract of Peganum harmala (L) against some fish pathogenic bacteria including Lactococcus garvieae, Aeromonas hydrophila, Yersinia ruckeri and Pseuodomonas putida isolated from diseased rainbow trout (Oncorhynchus mykiss). The antibacterial activity of extracts was evaluated using disc diffusion assay, m...

Temperature-dependent expression of virulence genes in fish-pathogenic bacteria

Virulence gene expression in pathogenic bacteria is modulated by environmental parameters. A key factor in this expression is temperature. Its effect on virulence gene expression in bacteria infecting warm-blooded hosts is well documented. Transcription of virulence genes in these bacteria is induced upon a shift from low environmental to a higher host temperature (37°C). Interestingly, host te...

The Use of Aptamer in Detection of Pathogenic Bacteria-

Detection, identification and measurement of microbial pathogens is critical for protecting public health. Although microbial culture-based tests and molecular techniques are currently the most commonly used, these techniques are time-consuming and require complex tools and experienced individuals. Consequently, it is costly to analyze these techniques. The emergence of the aptamer led to the e...

Ferromagnetism in Freshwater Bacteria