Published in Scientific Bulletin. Series F. Biotechnologies, Vol. XXV, Issue 2
Written by Inna RASTIMESINA, Olga POSTOLACHI, Valentina JOSAN, Oleg BOGDEVICI
The aim of this study was to characterize the soil microbiome, involved in nitrogen transformation processes, long-term exposed to obsolete pesticides (HCH, DDT and their metabolites). The working technique was based on the usual bacteriological methods of analysis; nutrient media, suitable for the comparative study of these groups of microorganisms were used. Under the long-term impact of toxicants, the restructuring of soil microbial community in the direction of reducing microbial diversity took place. In the soil polluted with POPs, compared to the reference soil, the number of nitrogen transforming bacteria and micromycetes was diminished and the representatives of the actinomycetes group were absent. The lack or small number of Azotobacter genus was the characteristic feature for the polluted soil. The research allowed the detection of both the inhibition of soil microflora and the development of natural attenuation of pesticides in soil.
[Read full article] [Citation]
