Interactions between bacteria which constitute the microflora of the digestive tract may be antagonistic or synergic. Certain bacteria can form a barrier to prevent colonisation of the gut by bacteria of other species or other strains of the same species. This review of current research refers to experiments on gnotoxenic animals, with mention of Escherichia coli and species of Clostr idium, La...

ABSTRACT- Lactic acid bacteria are commonly found in the gastrointestinal tract of various endothermic animals and humans, in milk, dairy and seafood products and on some plant surfaces. The aim of this study was to investigate the inhibitory effect of isolated lactic acid bacteria from intestines of narrow-barred Spanish mackerel (Scomberomorus commerson) on Listeria innocua growth. Five strai...

Objective: Lactic acid bacteria (LAB) produce various substances that exhibit antagonistic activity against other bacteria. Detection of antimicrobial substance produced by lactic acid bacteria against the water borne pathogens is the objective of this work. Materials: The bacteriocin producing probiotic strain Lactobacillus plantarum was isolated from a grass silage samples and identified base...

The present study was conducted to evaluate the potential of rice rhizosphere associated antagonistic bacteria for growth promotion and disease suppression of bacterial leaf blight (BLB). A total of 811 rhizospheric bacteria were isolated and screened against 3 prevalent strains of BLB pathogen Xanthomonas oryzae pv. oryzae (Xoo) of which five antagonistic bacteria, i.e., Pseudomonas spp. E227,...

Since Pasteur first demonstrated that certain micro6rganisms are able to exert antagonistic or antibiotic effects upon other organisms, an extensive literature has accumulated (Waksman, 1941). The presence of living organisms is often necessary for the phenomenon of antagonism to take place. In many cases, the antagonist was found to produce an active substance responsible for this action. The ...

saprophitic pseudomonas species are root-colonizing bacteria that can improve plant health. efficient exploitation of these bacteria in agriculture requires knowledge of traits that enhance ecological performance in the rhizosphere. some pseudomonas fluorescens strains present biocontrol properties, protecting the roots of some plant species against plant pathogens. these bacteria induce system...