Fungicides degradation in an organic biomixture: impact on microbial diversity
Coppola L, Comitini F, Casucci C, Milanovic V, Monaci E, Marinozzi M, Taccari M, Ciani M, Vischetti C
Dipartimento di Scienze Ambientali e delle Produzioni Vegetali, Università Politecnica delle Marche, via Brecce Bianche, 60131 Ancona, Italy.
Abstract
Biological systems are being developed all over EU countries to protect water-bodies from pesticide contamination at farm level. A laboratory experiment was carried out to test the efficiency of a mixture of compost and straw in bio-degrading different mixtures of fungicides usually applied in vineyards. At the same time the effects of fungicide applications on microbial community of biomixture were also evaluated. Results showed that the biomixture had a good capability of degrading pesticides. Indeed, at the end of the experiment (112 days), the concentration of most of the pesticides was close to complete degradation. Denaturing gradient gel electrophoresis (DGGE) analysis showed an evident modification of microbial diversity after the addition of fungicides. However, at the end of degradation process, no significant changes in the composition of microbial community were seen. In this specific substrate used in the biomixture, yeast flora and ascomycete filamentous fungi seemed to be involved in the degradation activity.
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Environment Information System Centre - microorganims,envis,environment
management, microorganisms, microbes, pollution control, toxic chemicals,
central and offshore ecology, environmentally sound and appropriate technology,
bio-degradation of wastes.
