MICROBIOLOGICAL CHARACTERIZATION OF SUPPRESSIVE FOREST SOIL FROM ENISALA
Suppressiveness is the property of certain soils to inhibit or limit the development of pathogenic species due to the presence of microbial antagonists.
Research has been carried out to characterize the microbial communities in the Calcic Chernozem (WRB) under cultivated forest from Enisala, Tulcea county. The bacterial microflora was dominated by pseudomonads and actinomycetes and fungal species were cosmopolitan, many of them antagonists and strong cellulolytic (Trichoderma, Mortierella, Epicoccum, Aspergillus, Penicillium). Soil suppressiveness was confirmed by the absence of the soil-borne pathogenic species. Mechanisms such as biochemical antagonism and hiperparasitism were evidenced by examination of interaction zone between Trichoderma viride and the test-pathogen Fusarium verticillioides.