Structural and functional characteristics of bacterial consortium, isolated from technogenic soils of the Verkhnekamsk salt deposit

The consortium of microorganisms SMB1, capable of efficient growing on naphthalene as a sole source of carbon and energy in the presence of 10% NaCl has been isolated from soil of potassium salt mining region (Berezniki, Perm krai). The consortium consists of two halotolerant bacterial strains-destructors of naphthalene, namely Arthrobacter sp. (strains SMB145 =ВКМ Ac-2551, SMB11 =ВКМ Ac-2552), halotolerant strain Brevibacterium permense SMB14 (=ВКМ Ас-2280Т =LMG 22207Т) and halophile strain Chromohalobacter sp. SMB17 incapable of naphthalene utilization. During co-cultivation of the three strains Arthrobacter sp. SMB145, Brevibacterium permense SMB14 and Chromohalobacter sp. SMB17 on naphthalene at 7% NaCl higher growth parameters of the strain destructor Arthrobacter sp. SMB145 have been observed compared to individual strain cultivation. The bacterial consortium SMB1 respiration rate was higher in comparison to the individual strain SMB145 cultivation on naphthalene at 5% NaCl. Isolated bacterial consortium SMB1 can be recommended for the development of new biotechnologies for the treatment of polluted soils and wastewater under the conditions of salinization.