Abstract: The effectiveness of bioremediation of unproductive agricultural lands and marginal lands, not
only on the zonal climatic conditions and physico-chemical parameters of soil, but also on the
used plants and rhizosphere microorganisms. The use of xerophytic perennial grasses, adapted to
the regional climatic conditions and physico-chemical parameters of soils, will improve the
efficiency of bioremediation of unproductive agricultural lands and marginal lands. The article
presents the results of a comparative analysis of the prokaryotic communities of the rhizosphere
of the two representatives of the xerophytes herbs - Stipa capillata and Centaurea diffusa. We
have shown that the dominant position in the prokaryotic communities of the rhizosphere of
Stipa capillata and Centaurea diffusa is the phyla Proteobacteria, Actinobacteria, Firmicutes,
Bacteroidetes, Verrucomicrobia, Planctomycetes and Chloroflexi. The microorganisms with
cellulolytic activity and the destructors of aromatic compounds included in the composition of
prokaryotic communities in the rhizosphere of Stipa capillata and Centaurea diffusa |