The physical and chemical properties of brown forest, brown podzolic, and urban (lawns of the city of Vladivostok) soils that affect the reproduction of bacteria Listeria monocytogenes and Yersinia pseudotuberculosis were studied. The results of the experiments suggest that a high content of exchangeable bases, domination of the fraction of humic acids bound with clay minerals and the fraction of fulvic acids in humus, and high soil temperature stimulate the reproduction of the studied bacteria in soils. A high humus content, a predominance of humates, and a low soil temperature have an inhibiting effect on bacteria.

A total of 137 strains of mesophilic and psychrotolerant hydrocarbon-oxidizing bacteria have been isolated from three regions of the Sea of Japan exposed to different levels of anthropogenic pollution. The taxonomic affiliations of the culturable bacteria from surface waters and bottom sediments that are involved in the biodegradation of petroleum hydrocarbons in these regions have been identified. The isolated microorganisms belong to the phyla Actinobacteria, Firmicutes, and Proteobacteria. The hydrocarbon-oxidizing ability of the bacteria Okibacterium sp., Lechevalieria flava, Patulibacter sp., P. minatonensis, Gracilibacillus massiliensis, Thalassobacillus sp., Virgibacillus dokdonensis, Chryseomicrobium amylolyticum, Jeotgalibacillus marinus, Moraxella osloensis, Idiomarina maritima, and I. piscisalsi has been recorded for the first time. The results we obtained extend our knowledge about the potential of biodegradation of pollutants by members of certain taxa in the marine environment.

The character of interaction between saprophytic soil bacteria via gaseous metabolites was studied. It was established that, at the metabolic level, a diverse character of interspecies...

The cultivation of Panax ginseng C.A. Meyer, a valuable medicinal plant, presents a number of challenges due to its physiology and life cycle. The composition of the soil and the microbiome living in it are important for plant growth and root quality. Modern analytical methods were used to identify differences in the rhizosphere soils of plants in the forest and in the plots. Microbiological and molecular genetic methods were used to isolate and identify bacterial isolates from these soils, allowing for the establishment of a working collection of potentially useful bacterial strains. Increases in soil pH in the plots and changes in the amount of macronutrients partially explained the changes in the activity of the forest and plot isolates and the composition of the cultivated strains. The cultivated strains belonged to the rhizosphere-dominant phyla Pseudomonadota, Bacillota, and Actinomycetota of the main functional groups of soil potassium, phosphorus, and nitrogen transformations. The ratio of bacteria functional groups was comparable in the forest and in the plots. The most common phylum of cultured microorganisms was Bacillota, while the main differences were observed in the functional group of potassium-solubilizing bacteria belonging to the phyla Pseudomonadota.