Assessment of the Mycorrhizal Potential of Polluted Soils of M’Ploussoue Landfill in Bonoua, Côte D’Ivoire; [Evaluation du Potentiel Mycorhizien des sols Pollués de la Décharge M’Ploussoue de Bonoua, Côte D’Ivoire]

The accumulation of toxic substances such as metallic trace elements (TME) in landfill soils of the M'Ploussoue site in Bonoua could affect microorganisms proliferation specifically the sporulation and germination of spores of Arbuscular Mycorrhizal Fungi (AMF). To address this concern, this study was to assess the mycorrhizal fungi indigenous potential of polluted soils of M’Ploussoue landfill in Bonoua by a biological test with Zea mays L. and Acacia mangium Wild, as an host plants in trap culture of indigenous mycorrhizal fungi. After 45 days of culture, the mycorrhizal potential was determined through the extraction of the spores by soil wet sieving, the roots clearing with trypan blue and the count of fungal strains. The macroscopic analyzis of the spore and fungi strains revealed the majoritory presence of Glomus spp. (90%) belonging to the Glomal order and also the presence of nonspecific fungi especies to acacia as Aspergillus spp., Fusarium spp., Trichoderma spp. and Penicillium spp. The microscopic examination of Zea mays and Acacia mangium roots indicated frequency (80 to 90%), intensity (15 to 40%) and arbuscule contents (87.5%) and vesicles (12 to 100%) are very important in polluted soil. The formation of typical endomycorrhizal structures (vesicles and arbuscules) suggests the presence of symbiotic vesiculo-arbuscular endomycorrhizal fungi (VAMF) able to promote better Acacia mangium development despite soil pollution. Based on these results, the spores of VAFM fungi from this site could be used in the remediation of the site. © 2021 International Formulae Group. All rights reserved.