The Molecular Study of Antibiotic Resistant Genes in Selected Bacterial Isolates from Different Drinking Water Sources of Bhopal District of Madhya Pradesh

Abstract

The study began by isolating bacterial species from various drinking water sources in the Bhopal district. These bacteria were cultured using nutrient agar media, which supports a diverse range of bacterial species. This phase was crucial for identifying potential antibiotic-resistant bacteria prevalent in the water supply. Following the initial isolation, pure cultures were obtained from mixed colonies. This step involved selecting distinct colonies based on their morphological characteristics and further culturing them on fresh media. The establishment of pure cultures allowed for more accurate and detailed analyses of each bacterial species. A comprehensive quantitative analysis was conducted to determine the prevalence of bacterial species in the water samples. This included counting colony-forming units (CFUs) to estimate bacterial concentrations, which provided insight into the potential health risks associated with waterborne bacteria in Bhopal. The study highlighted significant seasonal variations in bacterial populations. The rainy season showed increased bacterial counts, likely due to runoff and leaching, whereas the winter season recorded lower counts due to reduced microbial activity. These findings emphasize the need for seasonal considerations in water quality management. newlineMolecular techniques, including PCR and 16S rRNA sequencing, were utilized to identify and characterize the antibiotic resistance genes in the bacterial isolates. This molecular characterization helped in understanding the genetic basis of resistance and the specific resistance mechanisms present in the bacterial populations. Antibiotic susceptibility testing revealed varied resistance patterns among the isolated bacteria to common antibiotics like Gentamicin, Tetracycline, and Ampicillin. The results indicated a substantial presence of antibiotic-resistant bacteria, posing a serious challenge to treating waterborne diseases effectively. This comprehensive study provided vital insights into the prevalence, characteristics, and res