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  • Title: Oxidation of elemental sulfur by bacteria and fungi in soil.
    Author: Czaban J, Kobus J.
    Journal: Acta Microbiol Pol; 2000; 49(2):135-47. PubMed ID: 11093676.
    Abstract:
    Laboratory experiments were used to determine the effects of antibiotics, organic C and CaCO3 amendments of sterile reinoculated soil on S0 oxidation by bacteria and fungi. The rate of S0 oxidation in soil with nystatin added was higher than in soil amended with penicillin + streptomycin. This tells us that bacteria were more efficient than fungi in the S0 oxidation process. It was demonstrated that neutrophilic chemolithotrophs were more efficient in this process than heterotrophs. Glucose introduced to the soil had a negative effect and CaCO3 had a positive effect on S0 oxidation. In soil enriched with glucose the number of chemolithotrophs was very low in comparison with extremely numerous heterotrophic bacteria and fungi. It suggests that the role of heterotrophs in S0 oxidation could be important in habitats rich in organic C, e.g. rhizosphere. In soil containing S0, qualitative changes of fungal communities to genera with higher S0 oxidation ability was also noted. In the presented paper, after comparison of the own results with the data of others concerning the natural soils, the role of various microbial groups in S0 oxidation process in soils is discussed.
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