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The Role of Cellulose in Microbial Diversity Changes in the Soil Contaminated with Cadmium

Cadmium is an essential element for plant growth and development. Its accumulation in soil is more hazardous to human and animal health than to plants and microorganisms. A pot greenhouse experiment was conducted to determine the usability of Sinapis alba L. and Avena sativa L. for the phytoremediation of soil contaminated with cadmium and to verify cellulose viability in the remediation of soil under cadmium pressure in doses from 4 to 16 mg Cd2+ kg−1 soil d.m. (dry matter) The effect of cadmium on soil microbiome was investigated with the culture method and the variable region sequencing method. Sinapis alba L. and Avena sativa L. were found viable in the phytoremediation of soil contaminated with Cd2+. Avena sativa L. was more potent to accumulate Cd2+ in roots than Sinapis alba L. Although the fertilization of Cd2+- contaminated soil with cellulose stimulated the proliferation of microorganisms, it failed to mitigate the adverse effects of Cd2+ on bacterial diversity. Bacteria from the Sphingomonas, Sphingobium, Achromobacter, and Pseudomonas genera represented the core microbiome of the soils sown with two plant species, contaminated with Cd2+ and fertilized with cellulose. Stimulation of the growth and development of these bacteria may boost the efficacy of phytoremediation of cadmium-contaminated soils with Sinapis alba L. and Avena sativa L.