Plant growth promoting rhizobacteria and their potential for biocontrol of phytopathogens
Growth promotion and disease control by rhizobacteria are complex interrelated processes that involve direct and indirect mechanisms. The mechanisms include synthesis of some metabolites (auxin, cytokinin and gibberellins), induction of 1-aminocyclopropane-1-carboxylate (ACC) deaminase, production of siderophore, antibiotics, hydrogen cyanide hydrogen cyanide (HCN) and volatile compounds. They also include mineral...
Asymptomatic bacteriuria: Occurrence and antibiotic susceptibility profiles among students of a tertiary institution in Ile-Ife, Nigeria
Asymptomatic bacteriuria, a form of urinary tract infections that involves isolation of a specified quantitative count of bacteria in an appropriately collected urine specimen obtained from a person without symptoms or signs referable to urinary infection is common, but the prevalence in population varies widely with age, sex and the presence of genitourinary abnormalities. This study therefore aimed at investigating...
An overview of food safety knowledge and practices in selected schools in the city of Al Ain, United Arab Emirates
Safe food handling in school canteens is an important practice to protect the students from food borne illnesses. The main purpose of this study was to present an overview of food safety knowledge and hygienic practices in selected schools in Al Ain city in the Emirate of Abu Dhabi, United Arab Emirates. The study consisted of three parts. The first part tackled students’ and teachers’ behavior during...
In vitro activities of Trichoderma species against Phytophthora parasitica and Fusarium oxysporum
Trichoderma species usually produce chitinases and glucanases with inhibitory effects on several phytopathogens. In this work, the effects of such enzymes activities were evaluated on Phytophthora parasitica and Fusarium oxysporum. Enriched enzyme extracts were obtained from Trichoderma asperellum, Trichoderma virens, Trichoderma gamsii and Trichoderma logibrachiatum, which were grown on supplemented media with chitin...
Biocontrol of Salmonella Typhimurium growth in tomato surface by bacteriophage P22
The aim of this research was to evaluate the effect of bacteriophage P22 on Salmonella Typhimurium in artificially inoculated tomato surface, under simulating condition of storage (10°C) and marketing (20°C) during seven days. First, we demonstrated the in vitro ability of phage P22 to reduce host population density to undetectable levels two hours after inoculation; however, S. Typhimurium was able to regrow up...