Microbial resistance in arsenic rich environment: isolation and characterization of arsenic resistant bacteria from soil

In a experiment, arsenic resistant bacteria were isolated from soil of Varanasi region in India. All the 16 species isolated from the soil showed resistance in Arsenic containing medium. The YEPG medium was used which allowed growth of bacteria. By the serial dilution plate technique, pure isolates were obtained. Then RAPD were used for characterization. Thus, the results showed that microorganisms were capable to resist arsenic rich environment. The isolated microorganism was identified as Bacillus sonorensis strain, which showed 99% sequence similarity to Bacillus sonorensis.