DISTRIBUTION AND ABUNDANCE OF ARBUSCULAR MYCORRHIZAL FUNGI OF Argania spinosa TREE AND MYCORRHIZAL I

Despite the fact that several studies have identified endomycorrhizal fungal populations in the rhizosphere soils of argan trees planted in the southwest of Morocco, many sites in this region remain undiscovered. There is a need to investigate additional soil samples from other argan tree stands. As a result, we investigated endomycorrhizae diversity and mycorrhizogenic infectious potential (MIP) in rhizosphere soils taken from 15 argan forest stands (Lakhssas, Smimou, Ait Baha, Tamanar, Essaouira, Taroudante (Elkoudia), Ighrm, Guelmim, Immsouane, Anzi, Tiznit, Tag The findings demonstrated the presence of various AMF structures such as vesicles and arbuscules in the root cortex of the argan tree, with a mycorrhization frequency ranging between 90% and 100%. The total quantity of AMF spores isolated from the rhizosphere ranged from 561 spores/100g of soil (Smimou) to 69 spores/100g of soil (Smimou) (Tiznit). Glomus (15 species), Scutellospora (3 species), Entrophospora (4 species), Pacispora (2 species), Gigaspora (4 species), Acaulospora (10 species), and Ambispora were among the 39 morphotypes of endomycorrhizal fungal spores found (1 species). Glomus macrocarpum was the most common species in this AMF community, with an occurrence frequency of 12.64 percent. Under bioassay settings, 3g of rhizosphere soil from argan trees from several locations in southwestern Morocco stimulated mycorrhization of sorghum plants at a rate of 50%, indicating a strong infectious potential. This capability opens up the possibility of producing robust argan seedlings that can withstand environmental restrictions.

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