Cultivated organotrophic bacteria isolated from the Selenga River water

We isolated eighteen pure cultures of organotrophic bacteria from the Selenga River water, and determined the taxonomic affiliation of 13 strains using MALDI-TOF spectroscopy. The strains were classified as species Pseudomonas fluorescens, Pseudomonas syringae complex, Bacillus altitudinis/pumilus, and Bacillus cereus. All strains were catalase-positive, most were capable of consuming starch, and some could consume hydrocarbons and phenol. The cultures utilized a wide range of sugars, alcohols, and organic acids, which may indicate their adaptive potential. The data obtained expand our understanding of cultured bacteria in river ecosystems.