Genetic Diversity of Bacteria Adapted to Cyanide-Bearing Compounds in the Technogenic Ecosystems as Detected by 16S rDNA Sequences
M. P. BELYKH1,2, S. V. PETROV1, A. Ju. CHIKIN2, N. L. BELKOVA3
1Irkutsk Research Institute of Precious and Rare Metals and Diamonds JSC, 664025, Irkutsk, Gagarinа blvd., 38
2Irkutsk State University, Pedagogical Institute, 664011, Irkutsk, Lower Quay str., 6
3Limnological Institute SB RAS, 664033, Irkutsk, Ulan-Batorskaya str.. 3
Keywords: цианид, кучное выщелачивание, технологический раствор, рудный штабель, 16S рДНК, Serratia, Achromobacter, Exiguobacterium, Acinetobacter, Hydrogenophaga, cyanide, heap leaching, process solution, ore heap, 16S rDNA, Serratia, Achromobacter, Exiguobacterium, Acinetobacter, Hydrogenophaga
Abstract
The genetic diversity of microbial communities developed naturally within the system of ore heap-solution of heap leaching process was studied. The difference of the microbial community structure was identified. It was found that phylotypes Serratia and Achromobacter dominated within the ore heap and Hydrogenophaga and Acinetobacter dominаted in the solution. Phylogenetic anаlyses revealed that there were microorganisms among the closest homologues which were able to destruct toxic compounds and/or exhibit their enzyme activity at low temperature. It was shown that aerobic organoheterotrophs were the most promising for isolation from autochthonous microbial communities of technogenic complexes in East Siberia, study of their destructive potential and use of them for bioremediation.
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