Gatsé Elgie Viennechie^{1, 2}, Mboukou Kimbatsa Irène Marie Cecile^{1, 3}, Ngala-Ngo chanta^{1, 2}, Baloki Ngoulou Tarcisse^{1, 2}, Morabandza Cyr Jonas^{1, 2,}, Nguimbi Etienne^{1, 2}

The aim of this work was to characterize molds isolated from Bilanko and Ngamakala peat bog soils in the Republic of Congo. After isolation on Sabouraud medium and morphological characterization, monitoring of enzyme production (protease, amylase, lipase and cellulase) and antagonism capacity were carried out using classical techniques. Enumeration showed a higher fungal concentration at point 6 of Ngamakala site with 9.10±2.57.10³ versus 5.40±1.19.10³ CFU/g at point 8 of Bilanko site. 09 fungal genera were identified: Aspergillus, Trichoderma, Penicillium, Beauvaria, Rhizomucor, Mucor, Onychocola, Fasarium, and Scytalidium. The Bilanko site was the most diversified with 07 genera, i.e. 52.94%, compared to 04 genera for Ngamakala, i.e. 48.06%, with a predominance of the genus Aspergillus in the 02 sites. 12 isolates (66.66%) produced amylase, protease and lipase, compared to 18 isolates (100%) for cellulase. The genus Aspergillus (E2L2-Ngamakala) was the most efficient in lipase production with a diameter of 5.4 cm. The genus Aspergillus (E6L3-Ngamakala) was the most invasive isolate on all the other isolates tested with a diameter of 90 mm. These results showed that the peat bog soils at both sites are rich in mold whose biological activities can influence biogeochemical cycles.

antagonism, hydrolases, mold, soil, peat bog