Features of formation microbial-plant community in technogenic soils of gold mining

The results of a quantitative and qualitative analysis of the technogenic soils microbial community from alluvial gold mining dumps and rhizosphere substrates of pioneer plants growing on them are presents in this article. The studied pioneer plants, with the exception of poplar, are characterized by a "rhizosphere effect" with the dominance of the bacteria utilizing mineral nitrogen. The specificity of rhizosphere microbial communities, due to the selective effect of plants root exudates, in turn contributes to the colonization of technogenic substrates by pioneer plants under unfavorable growing conditions.