Abstract
The analysis of the taxonomic structure of the bacterial complexes in the alluvial soils of the Oka River valley allowed revealing the distinct differences in the spectrum of the bacterial dominants in the virgin and cultivated soils. Arthrobacter and pigment coryneform bacteria are shown to predominate in the virgin soil; bacilli and pseudomonades are common in the soil under vegetables. On cabbage leaves and carrot roots (both healthy and rotten), the spectrum of dominants is composed of two genera of enterobacteria: Pantoea and Erwinia. As a result of the plowing in of vegetables into the soil, enterobacteria accumulate; among them, phytopathogenic species are present. Within a year after this plowing in and the new yield, the enterobacteria practically disappeared, but myxobacteria and cytophages developed. Since these bacteria belong to the cellulose-destroying prokaryotes, the increase in their contents in the soil testified to their participation in the decomposition of the buried vegetable residues. Weeds are known to concentrate various bacterial forms in the phylloplane; they enter from different ecological niches: soil, water, meadow, and agricultural plants. Representatives of phytopathogenic bacteria as minor components were found on weeds.
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Original Russian Text © T.G. Dobrovol’skaya, E.A. Leont’evskaya, A.A. Sneg, P.N. Balabko, 2010, published in Pochvovedenie, 2010, No. 4, pp. 477–481.
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Dobrovol’skaya, T.G., Leont’evskaya, E.A., Sneg, A.A. et al. Specific features of bacterial communities in floodplain agrocenoses. Eurasian Soil Sc. 43, 442–446 (2010). https://doi.org/10.1134/S1064229310040101
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DOI: https://doi.org/10.1134/S1064229310040101