Soil fungi impacted by cassava residue (Manihot esculenta Crantz) in Santarém, Pará, Brazil
DOI:
https://doi.org/10.6008/CBPC2179-6858.2022.010.0020Keywords:
Manipueira, Cassava effluent, MicrobiomeAbstract
Manipueira, a liquid extracted during the pressing of cassava, has a high content of organic matter and is highly toxic – which, if discarded improperly, causes environmental damage. This research sought to identify the diversity of fungi present in soil impacted by manipueira in the municipality of Santarém, Pará, Brazil. The soil was deposited in two 20 L containers and sampling took place periodically on a time scale, before (control soil - M1) and after the manipueira was deposited (exposed soil - M2), at times T0 (day 1), T1 ( 15th day), T2 (30th day) and T3 (45th day). A sample was taken from each container on time scales until the 45th day and the analyzes took place in the Bacteriology Laboratory of the Federal University of Western Pará. As a result, a total of 88 fungi were isolated, among which, 41 morphotypes were obtained from the M1 soil sample and 47 test soil morphotypes. Among the fungi identified, the most frequent in soil M2 were Geotrichum sp. (30%) and Rhizopus sp. (17%). In the soil of sample M1, Penicillium sp. (27%) and Cunninghamella sp. (20%). There was greater diversity in treatment M2 than in treatment M1. Fungi live in the soil and perform key functions in maintaining life on earth, therefore, the importance of studies that identify the microbiota present and active in toxic effluents is emphasized, as these may contain characteristics that could mitigate damage. caused by environmental contamination, revealing important ecological relationships and biotechnological applications.
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